A steering device for a motor vehicle, in particular a “steer-by-wire” steering device, comprises a steering wheel, which is able to act on a steering sensor for measuring the rotation angle position of the steering wheel, an electromechanical actuator, which is able to act on a rack for steering wheels, and an electronic controller, which is adapted to detect the steering wheel angle position and to control the electromechanical actuator, wherein the steering device further comprises a feedback actuator acting on the steering wheel, wherein the controller is adapted to measure natural oscillations of the motor vehicle and to apply them with a corresponding amplitude to the feedback actuator.
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
B62D 5/22 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application for rack-and-pinion type
B62D 6/00 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
The present invention relates to a steering column (1) for a motor vehicle, comprising a steering shaft (4) which is mounted in a steering column housing (3) to rotate about a longitudinal axis (L) extending in a longitudinal direction, a rotation limiter (5) for limiting the rotation of the steering shaft (4), and a feedback actuator (6) for coupling a feedback moment into the steering shaft (4), comprising an actuator housing (61) and an actuator shaft (62) which can be rotationally driven relative thereto by a motor. In order to permit an optimised design and improved manufacture and assembly, the invention proposes that the feedback actuator (6) and the steering column (1) have a releasable connection.
A method for controlling a steer-by-wire steering system for a motor vehicle having steerable front and rear wheels in emergency steering operation comprises checking the steering system for the presence of a fault state and performing the emergency steering operation to maintain original driving behaviour if a fault state is detected, including: determining a target lateral acceleration on the basis of a current steering wheel position and a current vehicle speed, determining a yaw moment and, from the yaw moment, a general wheel steering angle for the original driving behaviour, where the general wheel steering angle is equal to a difference between a front wheel steering angle and a rear wheel steering angle, determining a front wheel steering angle correction and a rear wheel steering angle correction, and determining drive torques and/or braking torques for the front wheels and the rear wheels, which are distributed appropriately by the torque vectoring system.
B62D 7/15 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
B62D 9/00 - Steering deflectable wheels not otherwise provided for
4.
ELECTROMECHANICAL BRAKE DEVICE FOR A MOTOR VEHICLE
The present invention relates to an electromechanical brake device (1) for a motor vehicle, comprising an actuating device (5) which has at least one electric motor (41, 42) and to which a brake part (32) is operatively connected which can be adjusted along an adjusting direction (V) and can be brought into braking engagement with a corresponding brake part (2), wherein the motor (41, 42) can be activated by an electric control unit (100). In order to make reduced complexity and improved operation possible, the invention proposes that the actuating device (5) and the control unit (100) are of integrated configuration with the brake device (1).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
5.
METHOD FOR CAPTURING THE POSITION OF TWO MOVABLE COMPONENTS OF A STEERING COLUMN FOR A MOTOR VEHICLE, AND STEERING COLUMN FOR A MOTOR VEHICLE
The present invention relates to a method for capturing the position of two movable components (21, 22) of a steering column (1) for a motor vehicle, which are able to be moved relative to one another in a movement direction over a plurality of movement ranges (V1, V2, V3), wherein the relative position of the components (21, 22) is captured as a position value by a sensor (72) of f position-capturing device (7). The aim of the invention is to allow improved position capturing with relatively little complexity. To achieve this aim, according to the invention at least two sensors (73, 74) of the position-capturing device (7) capture a position value (P1, P2) for each of the movement regions (V1, V2, V3), each of the movement regions (V1, V2, V3) being assigned a clearly distinguishable combination of the at least two position values (P1, P2) of the at least two sensors (73, 74).
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
B62D 1/183 - Steering columns yieldable or adjustable, e.g. tiltable adjustable between in-use and out-of-use positions, e.g. to improve access
B62D 1/189 - Steering columns yieldable or adjustable, e.g. tiltable with tilt adjustmentSteering columns yieldable or adjustable, e.g. tiltable with tilt and axial adjustment the entire steering column being tiltable as a unit
The present invention relates to a steering column (1) for a motor vehicle, comprising two components (3, 4) which can be shifted relative to one another and a position detection device (7) which has a sensor unit (71) connected to one component (3), which sensor unit is movable, in a shifting direction, relative to a target unit (72) connected to the other component (4), and is designed to detect the relative position of the target unit (71), wherein the target unit (71) has a target element (73) which extends in a planar manner in parallel with the shifting direction (x) and which has a measurement variable that can be detected by the sensor unit (71) and that varies along the shifting direction. In order to make improved position detection possible, according to the invention the target unit (72) has a plastics layer (75) connected to the target element (73).
The present invention relates to a steering actuator (4) for a steer-by-wire steering system (1) of a motor vehicle, said steering actuator comprising an actuator housing (41) in which an actuator rod (5) is mounted so as to be axially translationally displaceable, which actuator rod has a coaxial spindle thread (51) that engages in a spindle nut (43) that is axially supported in the actuator housing (41) and can be rotationally driven by a motor, wherein a sensor device is provided for detecting the position of the actuator rod (5) in the actuator housing (41). In order to enable a more compact design with reduced outlay, according to the invention the sensor device has a rotary sensor (7) that interacts with the spindle nut (43).
Provided is a steering system for a vehicle that can suppress the discomfort of a driver in a case where the driver performs a quick steering operation. The steering system for the vehicle includes: a steering mechanism mechanically separated from a steering member and configured to steer wheels by moving a rack; a steering actuator configured to apply a driving force to the steering mechanism; and a controller configured to calculate a target position of the rack and to control the steering actuator such that a position of the rack matches the target position thereof. The controller is configured to execute target position correction control in which the controller corrects the target position of the rack according to a steering angular velocity and/or a steering angular acceleration of the steering member.
The invention relates to a method for operating a motor vehicle (10) comprising a steering unit (12) which is designed to specify a steering angle of a wheel pair (14) on the basis of a steering signal and provide an angle signal which characterizes the actual steering angle of the wheel pair (14), wherein if the angle signal is not received by a control unit (16) which is designed to provide the steering signal using at least one sensor signal that is provided by a sensor unit (18) and characterizes a movement of the motor vehicle (10), the actual steering angle is estimated, and the estimation is used to set at least one actuator unit (20) such that a target trajectory (22), which is specified on the basis of the steering signal, and/or a safety operation of the motor vehicle (10) is specified. The invention additionally relates to a motor vehicle (10).
A motor vehicle and method for operating the same comprises two front wheels with front wheel steering, two rear wheels with rear wheel steering, and a driving stability device with a controller. The driving stability device, in particular the controller, is designed to synchronize the front wheel steering and the rear wheel steering such that the front wheel steering and rear wheel steering are involved independently of one another in controlling the driving stability.
A flux collection element of a collector unit of a magnetic position sensor and a method of producing the flux collection element, wherein the flux collection element comprises a first collection zone in a first plane and a second collection zone in a second plane, and wherein there is a connection between the first collection zone and the second collection zone via a magnetically conductive connection portion between a first attachment edge of the first collection zone and a second attachment edge of the second collection zone. In particular so that the flux collection element can thus be handled as a bulk product, the connection between the first collection zone and the second collection zone is mechanically stiffened, in particular by the introduction of a bead to be used in an electromechanical steering system in which a torque acting on a steering shaft of the steering system is detected by means of such a magnetic position sensor.
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
H01F 3/02 - Cores, yokes or armatures made from sheets
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
The present disclosure relates to a steering column, comprising: a first sleeve, a second sleeve and a gap elimination means. The first sleeve is received in the second sleeve in a telescopic way in a longitudinal direction. The gap elimination means includes an elastic pretensioning element and a wedge-shaped body, the wedge-shaped body having a first wedge-shaped surface and a second mating surface. The gap elimination means further comprises an intermediate element, the intermediate element having a third wedge-shaped surface which abuts the first wedge-shaped surface and has a shape fitted to the shape of the first wedge-shaped surface. The pretensioning element applies a pressing force to the wedge-shaped body via the intermediate element. The steering column according to the present disclosure is capable of stably maintaining a gapless state between the first sleeve and second sleeve, thus preventing noise.
B62D 1/19 - Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
13.
ELECTROMECHANICAL BRAKING SYSTEM FOR A MOTOR VEHICLE AND METHOD FOR OPERATING AN ELECTROMECHANICAL BRAKING SYSTEM IN A MOTOR VEHICLE
The present invention relates to a method for operating an electromechanical braking system (110) in a motor vehicle, wherein the braking system (110) has at least one input unit (113, 114), via which a braking command is transmitted, and at least two brake devices (1, BU), which each comprise a brake actuator (4, BM) with at least one electric servomotor (41, 42), wherein the brake devices (1, BU) are each associated with a wheel brake control unit (120, BC) and a wheel speed sensor unit (121), wherein for a respective brake device (1, BU) the associated wheel speed sensor unit (121) provides a wheel speed (P2) to the associated wheel brake control unit (120, BC), said wheel brake control unit (120, BC) is provided with a substitute wheel speed (EP1) for the wheel speed (P2) provided by the associated wheel speed sensor unit (121), wherein said wheel brake control unit (120, BC) controls the brake actuator (4, BM) taking into account the wheel speed (P2) provided by the associated wheel speed sensor unit (121) in order to implement the transmitted braking command in normal operation, and the wheel brake control unit (120, BC) controls the brake actuator (4, BM) taking into account the provided substitute wheel speed (EP1) in order to implement the transmitted braking command in the event of a fault with respect to the provision of the wheel speed (P2) by the associated wheel speed sensor unit (121). The invention also relates to a braking system (110) designed, in particular, to be operated by such a method.
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
The present invention relates to an electromechanical braking device (1) for a motor vehicle, comprising a movement device (5) which can be driven by at least one electric motor (41, 42) and by which a braking part (22) can be moved, wherein the motor (41, 42) comprises a stator (1100) and a rotor (1200) mounted in the stator for rotation about a motor axis (M), wherein the rotor (1200) comprises rotor magnets (1201) distributed around the outer circumference, which are in the form of permanent magnets and extend bar-like axially parallel to the rotor axis (M), and which each have a radial magnet thickness (MT) and, in the circumferential direction, a magnet width (MW). In order to allow an efficient drive and a compact design, according to the invention the ratio of the magnet thickness (MT) to the magnet width (MW) is between 0.4 and 0.55.
H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
15.
METHOD TO CONTROL A STEERING SYSTEM OF A MOTOR VEHICLE WITH AN INCREASE IN SUPPLY VOLTAGE TO AN ACTUATOR MOTOR AFTER UNILATERAL FAILURE OF A REDUNDANT SYSTEM OR IN CASE OF EXTREME LOADS OR SHORT-TERM PERFORMANCE REQUIREMENTS
A method to control a steering system of a road vehicle, the steering system including an actuator with at least two redundant power packs, the method including detecting a failure and/or degradation in or of the at least two redundant power packs of the actuator and/or switching off a malfunctioning one of the at least two redundant power packs, or detecting extreme loads or short-term performance requirements; and increasing a supply voltage for at least one functioning power pack of the actuator to a value higher than a supply voltage under normal conditions to provide a higher power output of the actuator than power output under normal conditions.
The present invention relates to an electromechanical braking device for a motor vehicle, comprising an actuator (5) and a braking part which is connected to the actuator and which can be shifted along an axis (A) and brought into braking engagement with a counter braking part by the actuator (5), wherein the actuator (5) has a first actuating drive and a second actuating drive and the actuator (5) comprises, for realizing a shifting movement, a first three-phase electric motor (41) and a second three-phase electric motor (42) with a circuit arrangement for operating the electric motors (41, 42), wherein the circuit arrangement comprises a first control path with a first power module for controlling the first electric motor (41) and a second control path with a second power module for controlling the second electric motor (42), and wherein the circuit arrangement comprises a first computing unit and a first driver stage, wherein the first computing unit is designed to determine an electric-motor target specification on the basis of captured parameters and to control a power module by means of a driver stage in order to influence the motor currents so that the electric-motor target specification is implemented.
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
17.
ELECTROMECHANICAL BRAKING MECHANISM FOR A MOTOR VEHICLE
The present invention relates to an electromechanical braking mechanism (1) for a motor vehicle, comprising a driver carrier (100) to which an electric motor (41, 42) and an adjustment device (5) are attached, wherein said adjustment device is connected transmission-wise to a motor shaft (411, 421) and by means of which a brake part (22) can be adjusted, wherein the motor (41, 42) has a motor housing (413, 423) in which the motor shaft (411, 421), which extends in an axial direction, is supported in an end-face bearing cover (414, 424) and projects axially herefrom, wherein the motor housing (413, 423) is fixed to the drive carrier (100). To enable improved production and assembly, and to keep the installation space and weight low, according to the invention the drive carrier (100) has a recess (101) in which the motor housing (413, 423) can be received in an interlocking manner in the axial and radial direction, wherein the machine housing (413, 423) can be braced against an axial support surface (104) of the recess (101) on the end face.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/22 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
18.
METHOD TO CONTROL A STEER-BY-WIRE STEERING SYSTEM OF A ROAD VEHICLE WITH A FEEDBACK ACTUATOR HAVING AN INGRESS MODE AND AN EGRESS MODE
A method to control a steer-by-wire steering system for a road vehicle, the steer-by-wire steering system including a steering wheel, a road wheel actuator to actuate road wheels, and a feedback actuator to apply a feedback torque to the steering wheel, the method including, if an ingress situation is detected, switching on the feedback actuator and providing a resistance torque against rotation of the steering wheel in an ingress mode, and if a normal steering system shut down procedure is finished, activating an egress mode of the feedback actuator and providing a resistance torque against rotation of the steering wheel.
The invention relates to a power pack (15) for an electromechanical steering system (1) for a motor vehicle, having a controller (14) enclosed by a housing (16) and having an electric motor (10), wherein the controller (14) comprises a multipart circuit board (19) that has at least two parts (20, 21) that are located parallel to one another and connected to one another, and wherein fastening elements (31) are present and connect the housing (16) to the multipart circuit board (19) and the electric motor (10), wherein the fastening elements (31) are press-in fasteners having two ends, with a joining region (33, 36) being present on each of said two ends, and wherein the press-in fasteners penetrate at least one of the parts of the circuit board (20, 21) that are located parallel to one another and are pressed into recesses (32) in the electric motor (10) and/or recesses (37) in the housing (16) by way of a corresponding joining region (33, 36) so as to establish a connection.
The present invention relates to a braking system (110) for a motor vehicle, comprising at least two electrical braking devices (1) that have at least two electric servomotors (41, 42), and comprising at least two mutually independent voltage sources (P1, P2), wherein, in order to supply voltage, a first of the at least two servomotors (41) is assigned to a first voltage source (P1) and a second of the at least two servomotors (42) is assigned to a second voltage source (P2). In order to enable a higher degree of operational safety, the invention proposes that each braking device (1) has a braking actuator (4, BM1, BM2, BM3, BM4) that has at least a first servomotor (41) and a second servomotor (42).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
21.
METHOD TO CONTROL A STEER-BY-WIRE STEERING SYSTEM OF A ROAD VEHICLE AT POWER INTENSIVE MANEUVERS
The invention relates to a method to control a steer-by-wire steering system (1) for a road vehicle, the steer-by-wire steering system (1) comprising steering means (3), an road wheel actuator (5) to actuate road wheels (4) via a rack and a control unit (10) which includes a position controller, which calculates based on an actual rack position and a rack position request (17) a target rack position (21) for the road wheel actuator (5), characterized in that the following step is provided: a. If the requested rack speed is above a predefined maximum value, limit the requested rack speed to a maximum rack speed value (15) used by the position controller to calculate the target rack position (21) for the road wheel actuator (5).
B62D 6/00 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
22.
METHOD FOR CONTROLLING AN ELECTROMECHANICAL STEERING SYSTEM IN A SEMI-AUTONOMOUS DRIVING MODE OF THE STEERING SYSTEM WITH A POSITION CONTROL USING A BOOST CONTROL
The invention relates to a method for controlling an electromechanical steering system (1) in a semi-autonomous steering process, having the following step: • - determining a required motor torque (MotReqTrq) for actuating an electric motor (9) of a servo unit (10) of the electromechanical steering system (1), wherein a boost control (14) is carried out which determines the required motor torque (MotReqTrq) on the basis of a manual torque (TsuTrq) applied to the steering wheel, the vehicle speed (VhlSpd), and the steering column offset torque (TsuTrq offset), said steering column offset torque (TsuTrq offset) representing the position control of the electric motor (9), of a steering pinion, or of a steering rack.
The present invention relates to a braking system (110) for a motor vehicle, said braking system comprising: at least two braking devices (1) each having a brake actuator (4, BU), wherein each of the brake actuators (4, BM) comprises an electric servomotor (41, 42), and wherein the braking devices (1, BU) are connected to a central control unit (112) which is designed for connection to at least one input device (113, 114). In order to reduce the manufacturing and assembly costs and to enhance safety, according to the invention at least two wheel brake control units (120) are provided, each of which is connected to a brake actuator (1), and which are connected to the central control unit (112).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The invention relates to a steer-by-wire steering system (1) for a motor vehicle, comprising a first sub-system (101) and a second sub-system (102). The first sub-system (101) has a steering shaft (2), a steering handle (3) which is rotationally fixed to an end of the steering shaft, a feedback actuator (5), an absolute angle sensor unit (7) for determining the absolute steering angle of the steering shaft (2), and a relative angle sensor unit (4) for determining the relative steering angle of the steering shaft (2), and the second sub-system (102) has a steering adjuster unit (9), a coupling element (12), an absolute position sensor unit (15) for determining the absolute position of the coupling element (12), and a relative position sensor unit (16) for determining the relative position of the coupling element (12). In order to increase the robustness against faults, the first sub-system (101) and the second sub-system (102) are connected together via a communication connection (20), wherein the communication connection (20) is designed to transmit sensor data (32) from the first sub-system (101) to the second sub-system (102) and sensor data (31) from the second sub-system (102) to the first sub-system (101). The invention additionally relates to a method for operating such a steer-by-wire steering system.
Provided is a steering system for a vehicle that can accurately determine a degradation level of a steering actuator according to a traveling state of the vehicle. The steering system for the vehicle includes; a steering mechanism configured to steer wheels; a steering actuator configured to apply a driving force to the steering mechanism; and a controller configured to control the steering actuator. The steering mechanism includes a rack shaft that is movable in a vehicle width direction from a prescribed reference position. The controller is configured to calculate an evaluation value according to a use state of the steering actuator and to determine a degradation level of the steering actuator by comparing the evaluation value with at least one threshold that is set based on a moving amount of the rack shaft from the reference position and a vehicle speed.
A method to control a steering system or a sub-system of a road vehicle including a controller to operate in a normal mode with full steering functionality and no quality problems and at least two degraded operation modes with degraded operation of the steering system, the controller including an evaluator including an allocation between degradation levels of the steering system or the sub-system and operation modes, and the method includes determining an overall degradation level for the steering system or the sub-system by collecting single individual degradation levels of the steering system or the sub-system in the evaluator and determining an overall degradation level as a level with a highest degradation of the single individual degradation levels which in a corresponding operation mode provides enough performance of the steering system for an expected maximum power request.
A steer-by-wire steering system for a road vehicle includes a road wheel actuator to act on steerable wheels and electronically controlled as a function of a driver's steering request, a feedback actuator to transmit reactions of a road to a steering wheel, and a single steering wheel angle sensor to measure a steering wheel angle. The steering wheel angle sensor is an external sensor able to communicate on a second vehicle communication channel or via a private communication with the road wheel actuator. The steer-by-wire steering system also includes an external road wheel actuator position sensor to measure a position of the road wheel actuator and to communicate on the second vehicle communication channel or via the private communication with the road wheel actuator.
METHOD TO CONTROL A STEERING SYSTEM OF A MOTOR VEHICLE WITH INCREASED MAXIMUM OUTPUT POWER OF ACTUATOR MOTOR AFTER UNILATERAL FAILURE OF A REDUNDANT SYSTEM
A method to control a steering system of a motor vehicle, the steering system including at least one actuator with two redundant power packs each, the method including detecting a failure in or of one of the two redundant power packs of the at least one actuator and switching off a malfunctioning power pack, increasing a maximum output power of a functioning power pack of the at least one actuator to a value higher than a rated power for a defined period of time, and after the defined period of time, reducing the maximum output power of the functioning power pack of the at least one actuator back to the rated power or below.
A method to control a steer-by-wire steering system of a road vehicle, the steer-by-wire steering system including a feedback actuator to apply a feedback torque to a steering wheel and a road wheel actuator to turn steerable road wheels with two redundant power packs each, the method including, if a failure in the road wheel actuator is detected, increasing the feedback torque provided by the feedback actuator to a value higher than a calculated feedback torque, and if a failure in one power pack of the feedback actuator is detected, increasing the feedback torque provided by a functioning power pack of the feedback actuator to a value higher than the calculated feedback torque.
A method of controlling a steering system for a vehicle includes determining a state of performance degradation of the steering system, determining a vehicle situation, determining if a performance of the steering system in the determined state of performance degradation is sufficient for the determined vehicle situation, and, if the performance of the steering system is not sufficient, modifying the state of performance degradation by decreasing a degradation level for a period of time.
A method to control a steer-by-wire steering system of a road vehicle including a feedback actuator, a road wheel actuator, and a controller configured or programmed to control the feedback actuator and the road wheel actuator, and the method includes, upon external request to the controller, providing a garage mode of the steer-by-wire system, switching off the feedback actuator, depending on the external request, moving to a predetermined position or moving from a first end position to a second end position of the road wheel actuator or fixing a position of the road wheel actuator at a last position or a center position, and, after the garage mode is terminated, returning the road wheel actuator to an original position before the garage mode was entered into and switching on the feedback actuator.
A method for calibrating a position of a feedback actuator of a steer-by-wire steering system of a road vehicle includes moving the feedback actuator to a first end stop of the feedback actuator and from there moving the feedback actuator to a second end stop, recording a position of the two end stops and based thereon determining a newly defined center position, moving the feedback actuator to the newly defined center position, and storing the newly defined center position in a memory as an offset value of an absolute steering wheel angle.
The present invention relates to a method for controlling a motor vehicle having a steer-by-wire steering system with front-axle steering unit (2) and rear-axle steering unit (3) in the event of a fault (25) being detected in the front-axle steering unit (2), wherein vehicle signals relating to a steering input (721), a position of a steering rack of the front-axle steering unit (2) and a yaw rate (751) of the motor vehicle are detected, the detected vehicle signals (721, 751) are made available to a control unit (6), the control unit (6), in order to implement the steering input, generates a first control signal for controlling a steering adjuster (84) of the rear-axle steering unit (3), wherein the first control signal is generated taking into consideration the steering input (721), the position of the steering rack of the front-axle steering unit (2) and the yaw rate (751), and the steering adjuster (84) of the rear-axle steering unit (3) is controlled by the generated first control signal (94). The invention further relates to an emergency steering system which is designed in particular for the implementation of such a method.
The present invention relates to a method for operating an electromechanical braking device (1) comprising a brake part (32), a counter brake part (2), and an electromotive actuating device (5), in which method, in order to generate a braking action, the brake part (32) is moved into braking contact (K) with the counter brake part (2), being moved from a release position, in which an air gap (L) is located between the brake part (32) and the counter brake part (2), by means of the actuating device (5) in an adjusting direction, overcoming the air gap (L). In order to enable improved operation, according to the invention, before a braking action is generated, the brake part (32) is positioned by the actuating device (5) in an initial position (IN) in which a defined air gap width (B) of the air gap (L) between the brake part (32) and the counter brake part (2) is predefined.
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
35.
METHOD TO CONTROL A STEER-BY-WIRE STEERING SYSTEM OF A ROAD VEHICLE WITH VIRTUAL END STOP FEEDBACK FUNCTIONS
The invention relates to a method to control a steer-by-wire steering system (1) for a road vehicle with the following steps: Providing a basic feedback torque, when steering toward a mechanical end stop and the steering wheel angle is greater than or equal to an activation steering position, i. Activating a first virtual end stop feedback function, which determines a counter torque counteracting a driver's operation of the steering wheel, wherein the first virtual end stop feedback function depends on the steering wheel angle and the steering speed, ii. Adding the counter torque to the basic feedback torque to yield a steering wheel torque, wherein the course of the first virtual end stop feedback function is such that at a virtual steering end stop position a predefined maximum steering wheel torque is reached, and iii. Sending the resulting steering wheel torque (16) to the feedback actuator (10) and controlling the feedback actuator (10) accordingly,When steering backward from a mechanical providing a second virtual end stop feedback function likewise.
The invention relates to a method to control a steer-by-wire steering system (1) of a road vehicle, wherein the steer-by-wire steering system (1) comprises a feedback actuator (8) for applying a feedback torque to a steering wheel (3) and a road wheel actuator (5) for turning of steerable road wheels (4),characterized in that the method includes the following steps: a. Calculating a feedback actuator output torque, and b. When degradation of the steer-by-wire-steering system occurs or the end of the life of the steer-by-wire-steering system is detected, the feedback actuator output torque is limited by a limiter with a non-linear scaling function.
The present invention relates to an electrically adjustable steering column for a motor vehicle, comprising a supporting unit, by which a positioning unit is adjustably held, an adjustment device with an adjustment motor, said adjustment device being designed for adjusting the positioning unit relative to the supporting unit, a mechanical adjustment stop, which mechanically limits an adjustment of the positioning unit in a first adjustment direction, and a control unit. The control unit is designed here to activate the adjustment motor, wherein a virtual adjustment stop is defined, said adjustment stop being located upstream of the mechanical adjustment stop with respect to the first adjustment direction. The steering column is designed here for adjusting a positioning unit.
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
B62D 1/185 - Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
38.
TOOTHED BELT PULLEY FOR A TOOTHED BELT DRIVE OF A MOTOR VEHICLE STEERING SYSTEM, STEERING DRIVE FOR A MOTOR VEHICLE STEERING SYSTEM, AND STEERING SYSTEM FOR A MOTOR VEHICLE
A toothed belt pulley for a toothed belt drive of a motor vehicle steering system, having a gear ring which has an externally encircling toothing and is attached to a hub body. The gear ring is formed as a plastically formed metallic formed part and the hub body comprises a plastics-material part.
A system containing a reference trajectory device, a cost function device, a dynamic model device, a summing device, a controller, a brake actuator device, a drive actuator device, a steering actuator device, a multiplexer and a vehicle, in particular a motor vehicle, wherein the system, in particular the controller, is set up to execute a control algorithm which manages all actuators, in particular the brake actuator device, the drive actuator device and/or the steering actuator device, in order to achieve optimum performance, efficiency and stability.
A steering column for a motor vehicle, including a casing unit, in which a steering spindle is mounted so as to be rotatable about a longitudinal axis (L) running in the longitudinal direction, and which has at least one inner casing telescopically adjustable in the longitudinal direction in an outer casing tube, comprising a roller guide having at least one bearing support, which is radially supported and movable on the inner casing, and in which at least one roller is mounted so as to be rotatable about a roller axis which is transverse to the longitudinal axis (L).
The present disclosure relates to a steering column for a motor vehicle, comprising a steering shaft which is mounted so as to be rotatable about its longitudinal axis (L) relative to a carrying unit, a rotation limiter having an end stop for limiting the rotation of the steering shaft, and a rotary sensor coupled to the steering shaft by means of a torque-locked connection. In order to permit a greater operational reliability, the invention proposes that the rotation limiter has a threshold torque and, if said threshold torque is exceeded, the rotation of the steering shaft beyond the end stop is permitted, wherein the threshold torque is less than a maximum transmission torque of the connection between the steering shaft and rotary sensor.
The invention relates to a method to control a steer-by-wire steering system (1) for a road vehicle, the steer-by-wire steering system (1) comprising a steering wheel (3), a road wheel actuator (5) to actuate road wheels (4), and a feedback actuator (10) for applying a feedback torque to the steering wheel,wherein the following steps are provided:a) Providing steering wheel angular acceleration (11) with sign, steering wheel angular speed (13) with sign and vehicle speed (12) to a control unit,b) deciding on the basis of the steering wheel angular acceleration (11) whether the steering wheel is accelerating in the direction of turning or deaccelerating against the direction of turning, and calculating a corresponding steering wheel torque with a corresponding tuning map(17,18) by means of the control unit,c) calculating a vehicle speed gain with a vehicle speed tuning map (19)applied to the vehicle speed (12) by the control unit,d) deciding whether the steering wheel (3) turns clockwise or counterclockwise based on the steering wheel angular speed (13) by the control unit,e) calculating an output torque (16) counteracting the acceleration of the steering wheel (3) based on the results of steps b) to d), andf) sending the output torque (16) to the feedback actuator (10).
The present invention relates to an electromechanical braking mechanism (1) for a motor vehicle, comprising an adjusting device (5) and a brake part (32) which is connected thereto and can be adjusted by the adjusting device (5) along an axis (A) and brought in braking engagement with a counter-brake part (2), wherein the adjusting device (5) has a first adjusting drive (6) and a second adjusting drive (7) serially coupled thereto; the first adjusting drive (6) has a first drive wheel (65) that can be driven in rotation, and the second adjusting drive (7) has a second drive wheel (75) which can be driven in rotation and is coaxial to the first drive wheel. A friction clutch is arranged between the first drive wheel (65) and the second drive wheel (75), said friction clutch comprising two friction elements (8, 9) with coaxial friction surfaces (81, 91) which can be connected to one another in a frictionally engaged manner in order to produce a clutch engagement. The aim of the invention is to reduce production and assembly complexity with a lower installation space requirement and weight, such that at least one friction element (8, 9) is formed integrally with the first drive wheel (65) or the second drive wheel (75).
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/56 - Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
44.
STEER-BY-WIRE STEERING SYSTEM COMPRISING AN ADAPTED CONTROL SIGNAL, AND METHOD FOR OPERATING A STEER-BY-WIRE STEERING SYSTEM
The present disclosure relates to a steer-by-wire steering system for a motor vehicle containing a steering shaft that can be torsionally connected to a steering handling device, a feedback actuator having an electric motor acting on a rotor shaft, a transmission by means of which the rotor shaft is connected to the steering shaft, and a first angle sensor and a second angle sensor. A control unit assigned to the steering system is designed to receive a first sensor signal S provided by the first angle sensor, to receive a second sensor signal S provided by the second angle sensor, and to provide a control signal ST for controlling the electric motor.
The present invention relates to an electromechanical braking device (1) for a motor vehicle, comprising an adjusting device (5) and a brake part (32) which is connected thereto and can be adjusted by the adjusting device (5) along an axis (A) and brought in braking engagement with a counter-brake part (2), wherein: the adjusting device (5) has a first adjusting drive (6) and a second adjusting drive (7) serially coupled thereto; the first adjusting drive (6) has a first drive wheel (65) that can be driven in rotation, and the second adjusting drive (7) has a rotatingly drivable second drive wheel (75) that is coaxial with the first drive wheel, wherein a coupling device (8, 9) is arranged between the first drive wheel (65) and the second drive wheel (75) According to the invention, in order to enable improved adjustment of the air gap, the clutch device is designed as a friction clutch (8, 9) with a friction element (8) that can be frictionally connected to a counter-friction element (9) in the clutch engagement.
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
46.
ELECTROMECHANICAL BRAKING DEVICE FOR A MOTOR VEHICLE
The present invention relates to an electromechanical braking device (1) for a motor vehicle, comprising an electromotive adjusting device (5) and a braking element (32) which is connected thereto and can be adjusted by the adjusting device (5) and brought into braking engagement with a counter-braking element (2), wherein: the adjusting device (5) has at least one adjusting drive (6, 7); the adjusting drive (6) has a ball-ramp arrangement (6) comprising two cam disks (61, 62); the cam disks (61, 62) can be driven by an electric adjusting mechanism (41, 42) such that they rotate relative one another about an axis (A), and have raceways (64) that are axially opposite each other at an angle relative to the axis (A), between which raceways one ball (63) is arranged such that it can roll; the raceways (64) have an at least partially rounded-off cross-sectional profile with a raceway radius (rg), and the ball (63) has a ball diameter (Db). In order to implement an improved function having an optimized recovery characteristic, according to the invention, a ratio (C) between the raceway radius (rg) and the ball diameter (Db) is greater than 0.5.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
47.
ELECTROMECHANICAL BRAKING MECHANISM FOR A MOTOR VEHICLE
The present invention relates to an electromechanical braking mechanism (1) for a motor vehicle, comprising an adjusting device (5) and a brake part (32) which is connected thereto and can be adjusted by the adjusting device (5) along an axis (A) and brought in braking engagement with a counter-brake part (2), wherein: the adjusting device (5) has a first adjusting drive (6) and a second adjusting drive (7) serially coupled thereto; the first adjusting drive (6) has a first drive wheel (65) that can be driven to rotate and that can in turn drive a first output element (62), and a first drive element (61) which can be axially adjusted in relation thereto, in such a way that they rotate in relation to each other, and the second adjusting drive (7) has a rotatingly drivable second drive wheel (75) that is coaxial with the first drive wheel and that can rotatingly drive a threaded spindle (71) having a spindle thread (77) that engages an internal thread (78) of the first adjusting drive (6). In order to create a more compact and less complex design, according to the invention, the threaded spindle (71) and the second drive wheel (75) have corresponding, meshing form-fitting elements (73, 76) that are designed to produce a form-fit effective in the peripheral direction with respect to the rotation about the axis (A) and that can be axially moved in relation to each other.
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
The present disclosure concerns an electromechanical steering system with a steering shaft, with a magnetic torque sensor device for measuring a torque applied to the steering shaft and with a shielding element. The steering shaft comprises an input shaft which can be rotationally fixedly connected to a steering handle and penetrates through the shielding element, and an output shaft which is connected to the input shaft via a twistable torsion bar. The torque sensor device comprises a multipole magnetic ring rotationally fixedly connected to the input shaft, a stator ring element rotationally fixedly connected to the output shaft and surrounding the magnetic ring, a magnetic flux collector and a sensor for detecting a magnetic flux density. The shielding element is arranged following the magnetic ring, wherein the shielding element covering the surface of the magnetic ring and the stator ring element with respect to the steering handle.
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
B62D 6/10 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to input torque characterised by the means for sensing torque
49.
ELECTRICALLY ADJUSTABLE STEERING COLUMN WITH SAFETY CIRCUIT, AND METHOD FOR OPERATING AN ELECTRICALLY ADJUSTABLE STEERING COLUMN
The present disclosure relates to an electrically adjustable steering column for a motor vehicle, comprising a positioning unit on which a steering control element can be arranged, a support unit by which the positioning unit is held in an adjustable manner, an adjustment device which is configured to adjust the positioning unit relative to the support unit and which comprises, for the adjustment of the positioning unit, an electric motor. The steering column further has a control unit, wherein the control unit is configured to activate the electric motor. The control unit is further configured, for the activation of the electric motor, to generate a first signal and a second signal, wherein the activation of the electric motor requires the presence of the first signal and of the second signal, in particular at a first switch unit and a second switch unit of the control unit which are connected in series with the electric motor.
B62D 1/183 - Steering columns yieldable or adjustable, e.g. tiltable adjustable between in-use and out-of-use positions, e.g. to improve access
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
G07C 5/08 - Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time
B60W 60/00 - Drive control systems specially adapted for autonomous road vehicles
50.
Steering column with verifiable adjustability and method for operating such a steering column
The present disclosure relates to an adjustable steering column for a motor vehicle, comprising a support unit by which a positioning unit is adjustably held, and an adjustment device which is designed to adjust the positioning unit relative to the support unit. Associated with the steering column is a control unit which is designed to receive a signal, to evaluate the signal in terms of a predefined release condition, and to produce a release state of the steering column when the signal meets the release condition, and to produce a locked state of the steering column when the signal does not meet the release condition. Adjustment of the positioning unit is thus enabled exclusively in the release state.
The present disclosure relates to a method for operating an operating system (1.1, 1.2, 1.3) of a motor vehicle, in which a control command (M1) for controlling the motor vehicle is specified via a control element (3.1, 3.2, 3.3), the control command (M1) specified via the control element (3.1, 3.2, 3.3) is sensorially acquired and passed on from an electronic control unit (4) to an electromechanical actuator unit (5.1, 5.2, 5.3) as a control signal, wherein the actuator unit (5.1, 5.2, 5.3) implements the control command (M1) according to the control signal. The operating system (1.1, 1.2, 1.3) is monitored here for an occurrence of a deviation from a target behaviour of the actuator unit (5.1, 5.2, 5.3), wherein tactile feedback is applied to the control element (3.1, 3.2, 3.3) if a deviation is detected.
The present disclosure relates to a steering column for a motor vehicle, including an actuating unit. In order to render possible reduced friction and more flexible adaptation, the disclosure proposes that a stop body include a stop lever, which is mounted on the supporting unit rotatably about a lever axis (H) relative to the clamping shaft.
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
B62D 1/184 - Mechanisms for locking columns at selected positions
B62D 1/185 - Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
B62D 1/187 - Steering columns yieldable or adjustable, e.g. tiltable with tilt adjustmentSteering columns yieldable or adjustable, e.g. tiltable with tilt and axial adjustment
B62D 1/19 - Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
The disclosure includes a Steering column for a motor vehicle including at least two structural elements configured to be adjusted relative to each other and a linear adjustment drive configured to be adjusted in an adjustment direction in a motorised manner along an adjustment axis (S) configured to engage one of the at least two structural elements, and wherein an energy absorption device comprising an energy absorption element is arranged between the linear adjustment drive and at least one of the at least two structural elements. The energy absorption element includes an inner portion coaxial relative to the adjustment axis (S) and connected by an at least partially coaxially extending shaping portion in a sleeve-like manner to an outer portion of the energy absorption element which is arranged coaxially at the outer side thereof.
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
B62D 1/19 - Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
A steering column for a motor vehicle comprises an actuating unit. A steering spindle is mounted rotatably about a longitudinal axis extending in the longitudinal direction. A supporting unit is connectable to a motor vehicle body and in which the actuating unit is held so as to be displaceable in the longitudinal direction. An energy absorption device, which is incorporated between the supporting unit and the actuating unit, has an elongate energy absorption element fastened to the actuating unit or to the supporting unit via a fastening. A deformation member, which interacts with the energy absorption element, is attached to the supporting unit or to the actuating unit. In the event of a crash with a relative displacement of actuating unit and supporting unit, the deformation member brings about an energy-absorbing plastic deformation of the energy absorption element.
B62D 1/19 - Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
A steering column for a motor vehicle including a first component, a second component, wherein the first component and the second component are adjustable relative to one another in two non-parallel adjustment directions. A position detection device having a sensor connected to the first component including at least one sensor unit and a sensor target connected to the second component comprising at least one target unit, wherein the sensor is configured to detect relative position of the sensor target, wherein the target unit includes a measurement portion extending in the two adjustment directions which has a local measuring quantity varying in each of the two adjustment directions that can be detected locally by the sensor unit.
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
B62D 1/187 - Steering columns yieldable or adjustable, e.g. tiltable with tilt adjustmentSteering columns yieldable or adjustable, e.g. tiltable with tilt and axial adjustment
B62D 5/00 - Power-assisted or power-driven steering
An electromechanical steering system includes a steering shaft by means of which a steering command can be specified by means of a steering handling device, a steering gear, which is designed to convert a steering command into a steering movement of steerable wheels of a motor vehicle, taking into account at least one input variable. A magnetic torque sensor device measures a torque applied to the steering shaft. The torque sensor device comprises a sensor for detecting an uncompensated measurement signal (T). The torque sensor device comprises a computing unit, which is designed to provide a first parameter and a second parameter for compensation of the uncompensated measurement signal (T) and to calculate a compensated measurement signal (T*) based on the uncompensated measurement signal (T) and the two parameters and to provide this compensated measurement signal (T) as the at least one input variable.
B62D 6/10 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to input torque characterised by the means for sensing torque
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
57.
STEER-BY-WIRE STEERING SYSTEM AND METHOD FOR OPERATING A STEER-BY-WIRE STEERING SYSTEM IN A NORMAL OPERATING MODE AND IN A SPECIAL OPERATING MODE
A method of operating a steer-by-wire steering system of a motor vehicle to convert a steering command into a steering movement of steerable wheels of a motor vehicle is disclosed. The method includes sending a control signal to an electric motor of a steering actuator and converting the received control signal into a mechanical movement of the steering actuator by the electric motor, wherein the steering actuator acts on a coupling element, and wherein the electric motor is operated in a generator mode.
A steering column for a motor vehicle comprises a covering unit. A steering spindle is rotatably supported about a longitudinal axis which extends in a longitudinal direction. At least three covering elements can be displaced in a telescope-like manner in a longitudinal direction and which comprise at least one internal covering, an external covering and an intermediate element. A motorised displacement drive includes a first spindle drive arranged between the internal covering and the intermediate element and a second spindle drive arranged between the intermediate element and the external covering engages with the covering elements. The first spindle drive has a first threaded spindle which engages a first spindle nut and is selectively driven in rotation relative thereto by a drive unit. The second spindle drive has a second threaded spindle which engages a second spindle nut that can be driven in rotation relative thereto by the drive unit.
The present invention relates to a bearing cup set for a steering column comprising a bearing cup and a securing element, wherein the bearing cup has a bearing cup portion for the at least partial receiving of a rolling bearing and a holding portion extending radially outwards starting from the bearing cup portion. The bearing cup portion has a first opening side with a collar extending radially inwards and a second opening side. The securing element is connected to the bearing cup in such a manner that the securing element fixes a rolling bearing received by the bearing cup portion in the axial direction in respect of the bearing cup. A steering column comprises a jacket tube in which a steering shaft is received by the rolling bearing so as to be rotatable. The rolling bearing is arranged in the bearing cup portion of the bearing cup.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
Provided is a steer-by-wire steering system (1) for a vehicle (2) that can appropriately bring the steered angle of the wheels to a prescribed relationship to the steering angle of a steering member (10) even when the steering angle of the steering member was changed while the vehicle was parked. When the steered angle of the wheels deviates from the prescribed relationship with the steering angle of the steering member upon startup (ST2: Yes), the control unit (15) drives at least one of the steering actuator (12) and the reaction force actuator (13) to bring the steered angle (α) of the wheels closer to the prescribed relationship with the steering angle (β) of the steering member (ST12) using a change in the transmission shift position from the park position (P) or the neutral position (N) to the travel position (D or R) as a trigger (ST8: Yes).
A steering column for a motor vehicle may include a casing unit in which a steering spindle is mounted so as to be rotatable about a longitudinal axis extending in a length direction. The casing unit may have at least two casings that are adjustably guided relative to one another through a range of adjustment travel in the length direction. Part of the adjustment travel may correspond to a transitional portion, and part of the adjustment travel may correspond to a functional portion. The casings may be guided with a greater play in the transitional portion than in the functional portion. One casing may have a guide track and another casing may have a guide element that engages in the guide track and is guided in the length direction and has a guide play in the guide track that is greater in the transitional portion than in the functional portion.
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
B62D 1/183 - Steering columns yieldable or adjustable, e.g. tiltable adjustable between in-use and out-of-use positions, e.g. to improve access
B62D 1/185 - Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
B62D 1/19 - Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
62.
FEEDBACK ACTUATOR FOR A STEERING DEVICE OF A MOTOR VEHICLE AND STEERING COLUMN FOR A MOTOR VEHICLE
A feedback actuator for a steering device of a motor vehicle may include a steering shaft that is mounted so as to be rotatable about a longitudinal axis extending in a longitudinal direction and that, by way of a belt drive, is coupled to a motor shaft of an electric motor so as to be able to be rotatably driven. The belt drive may have at least one pair of belt pulleys having two belt pulleys that are wrapped by a belt. One of the belt pulleys may be operatively connected to the motor shaft and one may be operatively connected to the steering shaft. The two belt pulleys of the pair of belt pulleys may be disposed so as to be mutually coaxial or at a mutual angle.
B62D 5/00 - Power-assisted or power-driven steering
F16H 19/08 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and oscillating motion
63.
Adjustment drive for a steering column and steering column for a motor vehicle
An adjustment drive for a steering column of a motor vehicle may include a threaded spindle having an external thread, engaging with a corresponding internal thread of a spindle nut. A thread tooth of the external thread and a thread groove of the internal thread have corresponding axially sliding thread flanks that are braced against each other. At least one thread flank comprises at least one recessed lubricant uptake.
Provided is a steer-by-wire steering system for a vehicle that can reduce or eliminate the impact noise generated by the rack at the rack end. A control unit of the steering system is configured to determine a target steered angle (αt) according to the steering angle and drive the steering actuator so as to cause the steered angle to coincide with the target steered angle, and to determine a target reaction force (Tt) according to a steered state of the wheels and drive the reaction force actuator so as to cause the reaction force to coincide with the target reaction force. The control unit is further configured to set a maximum limit (αmC) on the target steered angle, the maximum limit being a value smaller than a physical maximum steered angle (αmP) of the wheels imposed by the steering mechanism.
A sensor assembly for an electromechanical steering system of a motor vehicle may include a measuring device and a control device. The measuring device may include a torque sensor unit and an index sensor unit. The torque sensor unit may be connected to the control device by a power supply line to supply said unit with electrical energy. The sensor assembly is configured to transmit an index signal of the index sensor unit to the control device by modulating a signal that is transmittable via the power supply line.
G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
An adjusting drive for a motor-adjustable steering column may include an outer threaded spindle that has an external thread that engages with a spindle nut and that has an internal thread that is engaged by an inner threaded spindle. The spindle nut, the outer threaded spindle, and the inner threaded spindle can be driven in rotation relative to one another about an axis by a motor-type drive unit. The adjusting drive may also include a blocking device that is switchable between a first position and a second position. In the first position the outer threaded spindle is locked together with the spindle nut for conjoint rotation. In the second position the outer threaded spindle is locked together with the inner threaded spindle for conjoint rotation.
A steering column for a motor vehicle may include an inner casing in which a steering spindle is mounted rotatably about a longitudinal axis that extends in a longitudinal direction and is received in an outer casing in a slidingly adjustable manner in the longitudinal direction. A pretensioning apparatus may have a pressure piece that can be braced from an outside in a tensioning direction transversely to the longitudinal axis against the inner casing. The pressure piece is held in the longitudinal direction on the outer casing and is supported against a fixing element counter to the tensioning direction. The fixing element is fixed in a recess of the outer casing. The fixing element has a forming means that is plastically furrowed into the recess, and/or the recess has a forming means that is plastically furrowed into the fixing element.
B62D 1/185 - Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
B62D 1/19 - Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
A steering column for a motor vehicle may include an adjusting unit in which a steering spindle is mounted so as to be rotatable about a longitudinal axis extending in a longitudinal direction, a holding unit in which the adjusting unit is adjustably held, and a fixing device with a first clamping device and a second clamping device for the releasable fixing of the adjusting unit relative to the holding unit. The clamping devices are operatively connected to a clamping lever that can be selectively brought into a fixed position or into a released position. The clamping devices may be operatively arranged in parallel.
B62D 1/184 - Mechanisms for locking columns at selected positions
B62D 1/19 - Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
A power assisted steering system may include a threaded spindle that engages in a spindle nut, extends in a direction of a spindle axis, and is axially displaceable in a housing; and a drive unit having a gearwheel that is connected to the spindle nut in a rotationally fixed manner, can be driven rotatably about the spindle axis, and is rotatably mounted in the housing in a bearing arrangement. The bearing arrangement may have at least one bearing outer ring that is axially supported on the housing at an end face via a spring element, that is received coaxially in a sleeve element, and that is held radially in the housing. The spring element may be formed as a spring portion, and the sleeve element may be formed as a sleeve portion that is connected in one piece to the spring portion, on a one-piece carrier sleeve.
A steering column may include a casing unit in which a steering spindle is mounted rotatably about a longitudinal axis extending in a longitudinal direction, and casing tubes that are adjustable telescopically relative to one another in the longitudinal direction. A roller guide with at least one bearing support can be displaced radially on a first of the casing tubes, and in which at least one roller is mounted rotatably about a roller axis that is transverse to the longitudinal axis. The roller can roll via its outer circumference in the longitudinal direction on a second of the casing tubes. A pretensioning device interacts with the bearing support to pretension the roller against the second casing tube. The bearing support may be guided on the first casing tube with an oblique inclination relative to the longitudinal axis, and the pretensioning device may apply an axial force to the bearing support.
A steering column for a motor vehicle may include a steering shaft mounted in a casing unit so as to be rotatable about a longitudinal axis, and a feedback actuator that has an electric motor with a motor shaft that is aligned axially along a motor axis, arranged at a distance parallel to the longitudinal axis, and coupled to the steering shaft via a transmission. The motor is connected to a control unit for electrical operation. The control unit may be integrated with the feedback actuator. And the transmission may be arranged axially between the motor and the control unit.
A steering system is provided with a control unit (15) configured to determine a target steered angle (αt) according to a steering angle (β) of a steering shaft (18) which is fitted with a steering wheel (19) and drive a steering actuator so as to cause the steered angle (α) to coincide with the target steered angle, and to determine a target reaction force (Tt) according to a steered state of the wheels and drive a reaction force actuator (13) so as to cause the reaction force to coincide with the target reaction force. The control unit is configured to correct an output of the steering angle sensor in such a manner that a geometric steering center of the steering wheel coincides with a mechanical steering center of the steering shaft upon receiving a prescribed input (S) from a manual input switch (37).
Provided is a steer-by-wire steering system for a vehicle that can prevent the vehicle from suddenly accelerating in a direction which the drive did not anticipate even when the steering angle of the steering member was changed while the vehicle was parked. When the steered angle deviates from the prescribed relationship to the steering angle (ST2: Yes), immediately or upon satisfaction of a trigger condition, the control unit drives the steering actuator to bring the steered angle to come closer to the prescribed relationship to the steering angle (ST16, ST17, ST20, ST21), and sets an upper limit to a speed or an acceleration of the vehicle (ST7).
In a steer-by-wire steering system for a vehicle, a control unit (16) controls an operation of a steering actuator to cause the steered angle of wheels to be in a prescribed relationship to a steering angle, and an operation of the reaction force actuator (15) including a pair of reaction force motors (14) to cause the reaction force to be a value (Tt) corresponding to a steered state of the wheels, wherein the control unit is provided with a failure detection unit (36) configured to detect failures of the reaction force motors, and upon detecting a failure of one of the reaction force motors, progressively reduce an output (Tta) of the other reaction motor to a prescribed limit value (TL).
A steer-by-wire steering system for a motor vehicle may include a rotatably supported steering spindle, a feedback actuator with a feedback motor for acting on the steering spindle, a steering actuator with a steering motor for acting on steered wheels of the motor vehicle based on rotation of the steering spindle, and two control units for controlling the feedback motor and the steering motor. A first control unit of the two control units and a second control unit of the two control units have different levels of complexity relative to each other, in particular such that the first control unit is more powerful than the second control unit. Also, a method can be utilized to operate such a steer-by-wire steering system, whereby the first control unit and the second control unit execute procedures of different complexity relative to each other.
A steering column for a motor vehicle may include a casing unit in which a steering spindle is mounted such that the steering spindle is rotatable about a longitudinal axis that extends in a longitudinal direction. The casing unit has at least two telescopically guided casing tubes that are adjustable relative to one another in the longitudinal direction, an intermediate element that is movable in the longitudinal direction and is arranged between the casing tubes, and a positioning device for positioning the intermediate element in the longitudinal direction relative to the casing tubes. The positioning device may have elongate guide tracks that are arranged on the casing tubes and the intermediate element and interact with one another such that they position the casing tubes and the intermediate element relative to one another in a defined manner.
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
B62D 1/185 - Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
77.
METHOD TO CONTROL A STEERING SYSTEM OF A MOTOR VEHICLE WITH AN INCREASE IN SUPPLY VOLTAGE TO THE ACTUATOR MOTOR AFTER UNILATERAL FAILURE OF THE REDUNDANT SYSTEM OR IN THE CASE OF EXTREME LOADS OR SHORT-TERM PERFORMANCE REQUIREMENTS
The invention relates to a method to control a steering system (1) of a road vehicle, wherein the steering system (1) comprises one actuator (5) with at least two redundant power packs each, wherein the method includes the following steps: • a) Detecting a failure and/or degradation in or of a power pack of the actuator and/or switching off the malfunctioning power pack or Detecting extreme loads or short-term performance requirements; • b) Increasing the supply voltage for the at least one functioning power pack of the actuator to a value higher than the supply voltage under normal conditions to provide a higher power output of the actuator • than the power under normal conditions.
The invention relates to a method to control a steer-by-wire steering system (1) for a road vehicle, the steer-by-wire steering system (1) comprising steering means (3), an road wheel actuator (5) to actuate road wheels (4), and a feedback actuator (11) for applying a feedback torque to the steering means, wherein the following steps are provided: - If an ingress situation is detected (12), switching on the feedback actuator (11) and providing a resistance torque against rotation of the steering means (3) in an ingress mode; - If the normal steering system shut down procedure is finished, activating an egress mode of the feedback actuator (11) and providing a resistance torque against rotation of the steering means (3).
A steering system circuit arrangement for operating an electric motor comprised by a steering adjuster may include a control unit and either a first sensor unit, which is designed to provide first input signals, or a second sensor unit, which is designed to provide second input signals that are different from the first input signals. The control unit is configured to both receive the first input signals provided by the first sensor unit and to provide an actuation signal for the electric motor by taking account of these received first input signals, and to receive the second input signals provided by the second sensor unit and to provide the actuation signal by taking account of these received second input signals. Further, an electromechanical steering system may include such a circuit arrangement. Methods for producing and operating such steering systems may also be utilized.
An adjustment drive can be used in a steering column for a motor vehicle. In some examples, the adjustment drive may include a threaded spindle that engages with an outer thread in a spindle nut and a drive unit that is coupled to the threaded spindle or the spindle nut in such a manner that the threaded spindle and the spindle nut can be driven in rotation relative to each other. The drive unit may have a torque-transmitting slip clutch that is coupled to the threaded spindle or the spindle nut. The slip clutch may include friction faces that contact each other in a frictionally engaging manner.
The invention relates to a steering column (1) for a motor vehicle, comprising a casing unit (3) in which a steering spindle (4) is rotatably mounted about a longitudinal axis (L) and which has an outer casing (31), at least one inner casing (33) being adjustably guided in the axial direction in a telescoping manner in said outer casing. The steering column also comprises an adjustment drive (6) with a drive unit (63), by means of which a threaded spindle (62) can be rotated about the spindle axis (S) thereof, said threaded spindle engaging into a spindle nut (61) which is held in a rotationally fixed manner relative to the spindle axis (S), wherein the drive unit (63) and the spindle nut (61) are supported between the outer casing (31) and the inner casing (33). The aim of the invention is to allow a smaller installation space requirement. According to the invention, this is achieved in that a coupling rod (7) which is elongated in the direction of the spindle axis (S) is connected to the spindle nut (61) at the coupling rod end near the nut and to the inner casing (33) at the coupling rod end remote from the nut.
A steering column for a motor vehicle may include an actuating unit in which a steering spindle is rotatably mounted and which is held in an adjustable manner by a supporting unit, an adjustment device for adjusting the actuating unit with respect to the supporting unit, and a position-sensing device that includes a first sensor unit for sensing the position of the actuating unit with respect to the supporting unit. The position-sensing device may also include a second sensor unit for sensing a state when the actuating unit is in a predetermined position relative to the supporting unit. One or both of the sensor units may be configured to operate in a contactless manner.
B62D 1/181 - Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
B62D 1/187 - Steering columns yieldable or adjustable, e.g. tiltable with tilt adjustmentSteering columns yieldable or adjustable, e.g. tiltable with tilt and axial adjustment
A steering system for a motor vehicle having a rotation sensor may include a magnetic element that is attached to a steering shaft and is rotatable with the latter about an axis, two stator elements that are arranged fixed coaxially relative to the steering shaft. The stator elements may be spaced apart axially from one another and may be operatively connected to at least one sensor element via two flux conductors. A flux conductor in each case has a collecting portion, a connecting portion, and a compensator portion. The collecting portion is connected to a stator element and is connected to the compensator portion via a connecting portion. The sensor element may be arranged between the two flux conductors. The compensator portion may have a compensator surface that is smaller than or equal to a collecting surface of the collecting portion.
G01D 5/244 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
84.
DRIVE UNIT OF AN ELECTRICAL POWER-ASSISTED STEERING SYSTEM FOR A MOTOR VEHICLE
A drive unit for an electrical power-assisted steering system of a motor vehicle may include an electric motor with a stator housing to which a control housing, in which a control circuit board is arranged, is attached, and with a connecting unit, attached to the stator housing, which has electrical connecting elements and at least one positioning element. The connecting elements are electrically connected to the electric motor and to the control circuit board. The positioning element interacts with the control circuit board for the purpose of relative positioning. To enable simpler and more secure mounting, the positioning element interacts with the control housing for the purpose of relative positioning.
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
85.
METHOD TO CONTROL A STEERING SYSTEM OF A MOTOR VEHICLE WITH INCREASED MAXIMUM OUTPUT POWER OF ACTUATOR MOTOR AFTER UNILATERAL FAILURE OF THE REDUNDANT SYSTEM
The invention relates to a method to control a steering system (1) of a motor vehicle, wherein the steering system (1) comprises at least one actuator (5, 8) with two redundant power packs each, and the method includes the following steps: • Detecting a failure in a power pack of the at least one actuator (9, 11) and switching off the malfunctioning power pack; • Increasing the maximum output power of the functioning power pack of the at least one actuator to a value higher than the rated power (10, 12) for a defined period of time; • After the defined period of time, reducing the maximum output power of the functioning power pack of the at least one actuator back to the rated power or below.
The invention relates to a method of controlling a steering system (1) for a road vehicle, wherein the method includes the following method steps: a) Determining the state of performance degradation of the steering system (8); b) Determining a vehicle situation (9); c) Deciding in a decision-making unit (10) if the performance of the steering system in the determined state of performance degradation is sufficient for the determined vehicle situation; d) If the performance of the steering system is insufficient, modification of the state of performance degradation (11) by decreasing the degradation level for a short period of time.
The invention relates to a method to control a steering system of a road vehicle (1), wherein the steering system (1) or a sub-system of the steering system (5,8) has a controller, wherein the controller has a normal mode of operation (AB) with full steering functionality and no quality problems and at least two degraded operation modes (BC,CD,DE) with degraded operation of the steering system and the controller comprises an evaluation means (17), which comprises an allocation between degradation levels of the steering system or the sub-system and operation modes, wherein the method includes the following method steps: • Determining an overall degradation level (18) for the steering system (1) or the sub-system of the steering system (5,8) by collecting single individual degradation levels (9,10,11,12,13,14,15,16) of the steering system or the sub-system of the steering system in the evaluation means (17) and determining the overall degradation level (18) as the level with the highest degradation of the single individual degradation levels (9,10,11,12,13,14,15,16) which in a corresponding operation mode offers enough performance of the steering system for an expected maximum power request.
The invention relates to a steer-by-wire steering system (1) for road vehicles, having a road wheel actuator (5) which acts on steerable wheels (4) and which is electronically controlled as a function of a driver's steering request, a feedback actuator (7) which transmits reactions of the road to a steering wheel (3), and a single steering wheel angle sensor (8), which measures an steering wheel angle, wherein the steering wheel angle sensor (8) is an external sensor, which is able to communicate on a second vehicle communication channel (101) or via a private communication with the road wheel actuator (5), and wherein the steer-by-wire steering system (1) comprises an external road wheel actuator position sensor (9), which measures the position of the road wheel actuator (5) and which is able to communicate on the second vehicle communication channel (101) or via a private communication with the road wheel actuator (5).
The invention relates to a method to control a steer- by- wire steering system (1) of a road vehicle, wherein the steer-by-wire steering system (1) comprises a feedback actuator (8) for applying a feedback torque to a steering wheel (3) and a road wheel actuator (5) for turning of steerable road wheels (4) with two redundant power packs each, and the method includes the following steps: a) If a failure in the road wheel actuator is detected (11), increasing the feedback torque provided by the feedback actuator (8) to a value higher than the calculated feedback torque (10); b) If a failure in one power pack of the feedback actuator (8) is detected (9), increasing the feedback torque provided by the functioning power pack of the feedback actuator to a value higher than the calculated feedback torque (10);
The invention relates to a method for controlling a steer-by-wire steering system of a road vehicle with a feedback actuator (7), a road wheel actuator (5) and a control unit for controlling the feedback actuator (7) and the road wheel actuator (5), wherein said method includes the following method steps: - Upon external request to the control unit (8), providing a garage mode of the steer-by-wire steering system: a) Switching off the feedback actuator (9); b) Depending on the external request, moving to a predetermined position or moving from end position to another end position of the road wheel actuator or fixing the position of the road wheel actuator at the last position or center position; - After the garage mode is terminated, returning the road wheel actuator (5) to the original position it was in before the steer-by-wire steering system entered into garage mode and switching on the feedback actuator (7).
The invention relates to a method for calibrating the position of a feedback actuator (7) of a steer-by-wire steering system (1) of a road vehicle, wherein said method includes the following method steps: Moving the feedback actuator (7) to a first end stop of the feedback actuator (7) and from thereon to a second end stop; Recording the position of the two end stops and based on that determining a newly defined center position; Moving the feedback actuator (7) to the newly defined center position; and Storing the newly defined center position in a memory as an offset value of absolute steering wheel angle.
To prevent a driver from feeling uncomfortable when the driver touches a steering member in a state where a driving source is stopped, a vehicle steering system (1) is provided in a vehicle (2) that travels by a driving force generated by a driving source (51). The vehicle steering system (1) includes; a steering member (10) configured to accept a steering operation; and a reaction force actuator (13) configured to apply a reaction force to the steering member (10) in response to the steering operation. In a state where the driving source (51) is stopped, the reaction force actuator (13) is configured to apply the reaction force to the steering member (10) based on a stopped time position that is a position of the steering member (10) at a time when the driving source (51) is stopped.
A steering column may include a casing tube in which a steering spindle is rotatably mounted, a guide unit that receives the casing unit so as to be telescopically adjustable in a direction of a longitudinal axis, and an electromotor adjustment drive that is arranged between the casing tube and the guide unit. An inner bearing face of the guide unit surrounds an outer casing surface of the casing tube and includes a slot extending longitudinally with a slot width between mutually opposing slot edges. A preload device engages the slot edges and is configured to apply a tightening force to reduce the slot width to preload the bearing face together with the casing surface. A clamping body cooperates with the slot edges via a deflection device that converts a reduction of slot width into a radial clamping movement of the clamping body for radial preloading the outer casing surface.
An adjusting drive for a steering column for a motor vehicle may include a threaded spindle with an external thread that engages in a spindle nut and a drive unit that is coupled to the threaded spindle or the spindle nut such that the threaded spindle and the spindle nut are able to be rotatably driven relative to one another by overcoming a screw resistance. To permit an optimized adjustment over the entire adjusting region, the threaded spindle includes at least one actuator portion and at least one transition portion. The transition portion is configured such that the screw resistance of the spindle nut is lower in the transition portion than in the actuator portion.
METHOD FOR PRODUCING A MAGNETIC FLUX CONDUCTOR ELEMENT FOR A ROTATION SENSOR, ROTATION SENSOR FOR A MOTOR VEHICLE STEERING SYSTEM, AND MOTOR VEHICLE STEERING SYSTEM HAVING A ROTATION SENSOR
The present invention relates to a method for producing a magnetic flux conductor element (5) for a rotation sensor (4) which is in the form of a shaped sheet-metal part (5) made from a magnetically conductive metal sheet, wherein the invention proposes the following method steps: providing a sheet-metal blank (60) made from a magnetically conductive material, which has an area extent of a multiple of the area of a shaped sheet-metal part (5), and punching out and embossing a plurality of shaped part portions (64) from the sheet-metal blank to form a cohesive semifinished product (61) in which connecting webs (65) have been left, via which the shaped part portions (64) remain connected to retaining portions (66), and magnetically normalizing the semifinished product (61), severing the connecting webs (65) to create separate shaped sheet-metal parts (5) from the shaped part portions (42). The invention also relates to a rotation sensor comprising flux conductor elements which have been produced using the method according to the invention, and to a steering system for a motor vehicle comprising such a rotation sensor.
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
96.
SENSOR APPARATUS FOR A MOTOR VEHICLE STEERING SYSTEM, STEERING SYSTEM FOR A MOTOR VEHICLE AND METHOD FOR PRODUCING A SENSOR APPARATUS
The present invention relates to a sensor apparatus (4) for a motor vehicle steering system (1), comprising a sensor housing (6), in which an electrical magnetic sensor (7) is arranged and is coupled to magnetic flux conductors (5), and wherein the flux conductors (5) can be connected to stator elements (42), the stator elements (42) being able to be positioned in the magnetic field of a magnet (41) that can rotate about an axis (L). In order to allow a design that is more robust and less susceptible to interference, the invention proposes that the flux conductors (5) be passed through passage openings (65) in the sensor housing (6) and that the sensor housing (6) be filled with a potting compound (9).
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
97.
SENSOR DEVICE FOR A MOTOR VEHICLE STEERING SYSTEM, STEERING SYSTEM FOR A MOTOR VEHICLE, AND METHOD FOR PRODUCING A SENSOR DEVICE
The present invention relates to a sensor device (4) for a motor vehicle steering system (1), comprising a sensor housing (6), in which an electrical magnetic sensor (7) is disposed and is coupled to magnetic flux conductors (5), wherein: the flux conductors (5) can be connected to stator elements (42); the stator elements (42) can be positioned in the magnetic field of a magnet (41), the magnet rotatable about an axis (L); the magnetic sensor (7) is disposed on a printed circuit board (71), which is fixed in the sensor housing (6). In order to allow improved measurement accuracy and to increase the operational reliability, according to the invention the sensor housing (6) has positioning means (66) corresponding with the printed circuit board (71) for the defined positioning of the printed circuit board (71) in the sensor housing (6), and the sensor housing (6) is filled with a potting compound (9), in which the printed circuit board (71) and the positioning means (66) are at least partly embedded and non-detachably fixed to each other.
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
98.
SENSOR DEVICE FOR A MOTOR VEHICLE STEERING SYSTEM, STEERING SYSTEM FOR A MOTOR VEHICLE AND METHOD FOR PRODUCING A SENSOR DEVICE
The present invention relates to a sensor device (4) for a motor vehicle steering system (1), comprising a sensor housing (6), in which an electric magnet sensor (7) is arranged and coupled to magnetic flux guides (5), wherein: the flux guides (5) can be connected to stator elements (42); the stator elements (42) can be positioned in the magnetic field of a magnet (41) that is rotatable about an axis (L); and the flux guides (5) and the magnet sensor (7) are fixed in the sensor housing (6). In order to enable simplified assembly and improved measuring accuracy and to increase operational reliability, according to the invention the sensor housing (6) comprises aligning means (65, 69), which correspond to the flux guides (5), for defined alignment of the flux guides (5) in the sensor housing (6), and the sensor housing (6) is filled with a potting compound (9) in which the flux guides (5) and the aligning means (65, 69) are at least partially embedded and non-releasably fixed to one another.
B62D 6/10 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to input torque characterised by the means for sensing torque
99.
FLUX-COLLECTING ELEMENT AND COLLECTOR UNIT OF A MAGNETIC POSITION SENSOR AND METHOD FOR THE PRODUCTION THEREOF
The present invention relates to a flux-collecting element (1) of a collector unit (2) of a magnetic position sensor, wherein the flux-collecting element (1) has a first collecting zone (4) in a first plane and a second collecting zone (5) in a second plane, and wherein a connection exists between the first collecting zone (4) and the second collecting zone (5) via a magnetically conductive connecting section (8) between a first connection edge (6) of the first collecting zone (4) and a second connection edge (7) of the second collecting zone (5). The connection between the first collecting zone (4) and the second collecting zone (5) is mechanically stiffened, in particular by the insertion of a bead (9), so that in particular the flux-collecting element can be handled as bulk material. The invention further relates to a method for producing such a flux-collecting element. Moreover, the invention relates to a collector unit (2) comprising such flux-collecting elements (1) and to a magnetic position sensor having such a collector unit (2). Lastly, the invention also relates to an electromechanical steering system, in which a torque acting on a steering shaft of the steering system is detected by means of such a magnetic position sensor.
A method can be used to control a steer-by-wire steering system for a motor vehicle that has two axles each with two wheels. Two front wheels can be steered by front-wheel steering and two rear wheels can be steered by rear-wheel steering. The motor vehicle includes a single wheel drive that is assigned to one of the two axles and drives the two wheels of the corresponding axle via a differential. The motor vehicle comprises an inboard braking system. The method involves checking the motor vehicle speed and activating rear-axle steering when a motor vehicle speed should be slower than 40 km/hr. With rear-axle steering active, the following steps are performed: deactivating front-wheel steering and rear-wheel steering, determining a reference position of a first steering rod via a reference wheel steering angle, determining a differential drive torque between the rear wheels to reach the reference position via a control unit.
B60K 23/04 - Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for differential gearing
B62D 7/15 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
