An extensometer structure comprising a first extension arm having a first mount configured to support a first specimen engaging member and a second extension arm having a second mount configured to support a second specimen engaging member. A cross-flexure assembly is formed between the first extension arm and the second extension arm remote from the first mount and the second mount. The cross-flexure assembly may include a first flexure and a second flexure each joined to and extending between the first extension arm and the second extension arm. The second flexure is orthogonal to the first flexure to form a pivot axis, the second flexure extending only on one lateral side of the first flexure from the first extension arm to the second extension arm and the first flexure extending only on one lateral side of the second flexure from the first extension arm to the second extension arm.
G01B 5/30 - Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
2.
FLAT BELT TESTER WITH MOVING ENDLESS SUPPORT MEMBER
A testing machine for rotating test specimens includes a frame and a roadway assembly. The roadway assembly includes an endless belt that provides a surface for engaging the test specimen and is supported by and rolls on rollers. An endless support member supported by the frame is disposed between the rollers and engages the endless belt from below. The endless support member moves with or is synchronized so as to have a velocity the same as the endless belt. The endless support member provides a flat reaction structure for loads from the test specimen placed on the endless belt and is of size corresponding to that needed by the contact patch of the test specimen upon the endless belt. Since the endless support member moves at the same velocity as the endless belt no forces are generated between the endless support member and the endless belt.
A support jig (10) for use with a testing machine (1) applying tensile loads, the support jig (10) includes a frame (12) and a pair of spaced apart supports (14A,14B) joined to the frame (12) to provide an alignment axis (16). Each support (14A, 14B) is configured to releasably hold a test specimen holder on the alignment axis (16) in a fixed spatial relationship with ends of the test specimen holders mountable to the test machine (1) facing in opposite directions. A method of using the support jig (10) to remotely mount the test specimen (15) to the test specimen holders from the test machine (1), and then using the support jig (10) to maintain the fixed special relationship while the test specimen holders are mounted to the test machine (1) is also provided.
A test system includes a frame. A hydraulic actuator is mounted to the frame and is configured to support a test specimen. A piezoelectric actuator is configured to apply a force to the test specimen. A controller is configured to excite the piezoelectric actuator and provide an indication of force generated by the piezoelectric actuator by measurement of current or charge provided to the piezoelectric actuator.
G01N 3/36 - Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
H02N 2/18 - Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
G01N 3/38 - Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
5.
SUPPORT JIG AND TEST SPECIMEN HOLDERS USED WITH THE SUPPORT JIG
A support jig (10) for use with a testing machine (1) applying tensile loads, the support jig (10) includes a frame (12) and a pair of spaced apart supports (14A,14B) joined to the frame (12) to provide an alignment axis (16). Each support (14A, 14B) is configured to releasably hold a test specimen holder on the alignment axis (16) in a fixed spatial relationship with ends of the test specimen holders mountable to the test machine (1) facing in opposite directions. A method of using the support jig (10) to remotely mount the test specimen (15) to the test specimen holders from the test machine (1), and then using the support jig (10) to maintain the fixed special relationship while the test specimen holders are mounted to the test machine (1) is also provided.
A support jig for use with a testing machine applying loads, the support jig includes a frame and a pair of spaced apart supports joined to the frame to provide an alignment axis. Each support is configured to releasably hold a test specimen holder on the alignment axis in a fixed spatial relationship with ends of the test specimen holders mountable to the test machine facing in opposite directions. A test specimen support is located between the holders holds the test specimen on the alignment axis so that the holders can be attached to the test specimen. The support jig allows the holders to be easily and correctly attached to the test specimen so as to maintain alignment of the holders and the test specimen on the alignment axis. The support jig also maintains the fixed spatial relationship of the holders and test specimen while the holders are mounted to the test machine.
A testing machine (10; 10') includes a base (12), at least a pair of columns (14) joined to the base (12) and a crosshead (16) joined to the columns (14) at a location spaced apart from the base (12). At least a pair of specimen holders (20A, 20B) are provided. A first specimen holder (20A) is supported by the crosshead (16) and faces the base (12), and a second specimen holder (20B) is supported by the base (12), the base (12) being that portion joined to each of the columns (14) closest to the crosshead (16). An actuator (22) connected in series between one of the specimen holders (20A, 20B) and the corresponding base (12) or crosshead (16). A brace assembly (30; 56; 80) connected to each of the columns (14) at a location along a length of each column (14) between the base (12) and the crosshead (16), the brace assembly (30; 56; 80) spanning between the columns (14) so as to connect the columns (14) together or to the base (12) or the crosshead (16).
A testing machine includes a base, at least a pair of columns joined to the base and a crosshead joined to the columns at a location spaced apart from the base. At least a pair of specimen holders are provided. A first specimen holder is supported by the crosshead and faces the base, and a second specimen holder is supported by the base, the base being that portion joined to each of the columns closest to the crosshead. An actuator connected in series between one of the specimen holders and the corresponding base or crosshead. A brace connected to each of the columns and spanning between the columns, the brace being connected to each of the columns at a location along a length thereof between the base and the crosshead.
An electric actuator (20) includes a stationary support (21) and a guide system having a single stationary guide (28) joined to the stationary support (21) having an axis (27). The actuator (20) also includes a stationary assembly (24) secured to the stationary support (21). A moving assembly (26) is movable relative to the stationary support (21) on the guide (28), where the moving assembly (26) and the stationary assembly (24) provide at least two sets of interacting magnetic fields disposed about the guide (28) at equal angular intervals. A test specimen support (76) is joined to the moving assembly (26) and disposed on one side of the stationary support (21) so as to move along the axis (27) with movement of the moving assembly (26), the axis (27) extending through the test specimen support (76).
An electric actuator includes a stationary support and a guide system having a single stationary guide joined to the stationary support having an axis. The actuator also includes a stationary assembly secured to the stationary support. A moving assembly is movable relative to the stationary support on the guide, where the moving assembly and the stationary assembly provide at least two sets of interacting magnetic fields disposed about the guide at equal angular intervals. A test specimen support is joined to the moving assembly and disposed on one side of the stationary support so as to move along the axis with movement of the moving assembly, the axis extending through the test specimen support.
A test system (11) includes a frame (10). A hydraulic actuator (12) is mounted to the frame (10) and is configured to support a test specimen (22). A piezoelectric actuator (14, 14') is configured to apply a force to the test specimen (22). A controller (34) is configured to excite the piezoelectric actuator (14, 14') and provide an indication of force generated by the piezoelectric actuator (14, 14') by measurement of current or charge provided to the piezoelectric actuator (14, 14').
A test system and method for testing a coupled hybrid dynamic system in simulated motion along a path includes a physical test rig configured to test a physical component. A processor is configured with modeled test data, a first virtual model portion and a second virtual model portion of the coupled hybrid dynamic system, the first virtual model portion, the second virtual model portion and the physical component comprising the coupled hybrid dynamic system. The processor is configured to control the test rig such that the component under test responds to the second virtual model portion, that in turn receives a first input comprising the modeled test data, a second input being motion of the first virtual model portion of the coupled hybrid dynamic system, a third input being a control mode response from the test rig having the physical component under test and a fourth input comprising guidance controls for the coupled hybrid dynamic system.
An extensometer structure includes a first extension arm having a first mount configured to support a first specimen engaging member and a second extension arm having a second mount configured to support a second specimen engaging member. A connecting member extends between the first and second extension arms and pivotally connects to each of the first and second extension arms between each corresponding mount and a remote end of the extension arm. A rear coupling assembly connects remote ends of the extension arms together.
G01B 5/30 - Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
A computer implemented method of lab management, including providing machine information on a service tag for a machine, the machine information suitable for uniquely identifying the machine, and storing auxiliary information about the machine on at least one of one or more remote devices, the at least one of the one or more remote devices configured to scan the service tag to retrieve machine information therefrom, and to integrate the auxiliary information with the machine information on the service tag.
G06K 7/00 - Methods or arrangements for sensing record carriers
G06F 16/27 - Replication, distribution or synchronisation of data between databases or within a distributed database systemDistributed database system architectures therefor
G06F 9/50 - Allocation of resources, e.g. of the central processing unit [CPU]
G06Q 10/08 - Logistics, e.g. warehousing, loading or distributionInventory or stock management
15.
INTEGRATED MACHINE INFORMATION MANAGEMENT WITH APPLICATION INTERACTIVE USER INTERFACE
A computer implemented method of lab management, including providing machine information on a service tag (102) for a machine (104), the machine information suitable for uniquely identifying the machine (104), and storing auxiliary information (202) about the machine (104) on at least one of one or more remote devices (108, 308), the at least one of the one or more remote devices (108, 308) configured to scan the service tag (102) to retrieve machine information therefrom, and to integrate the auxiliary information (202) with the machine information on the service tag (102).
An extensometer structure (12) includes a first extension arm (34) having a first mount (44) configured to support a first specimen engaging member (58) and a second extension arm (36) having a second mount (46) configured to support a second specimen engaging member (58). A connecting member (76, 76') extends between the first and second extension arms (34, 36) and pivotally connects to each of the first and second extension arms (34,36) between each corresponding mount (44, 46)and a remote end of the extension arm (34, 36). A rear coupling assembly connects remote ends of the extension arms (34,36) together.
G01B 5/30 - Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
An electric linear motor (10) includes a support structure (12), a stator assembly (16) secured to the support structure (12), and an armature assembly (14) secured to the support structure (12) for guided movement relative to the stator assembly (16). The armature assembly (14) includes a plurality of magnetic devices (20) and a core support (12) supporting each of the magnetic devices (20) in spaced apart relation to the stator assembly (16). The core support (12) has a plurality of fluid cooling passageways (28) formed therein.
An electric linear motor includes a support structure, a stator assembly secured to the support structure, and an armature assembly secured to the support structure for guided movement relative to the stator assembly. The armature assembly includes a plurality of magnetic devices and a core support supporting each of the magnetic devices in spaced apart relation to the stator assembly. The core support has a plurality of fluid cooling passageways formed therein.
A phantom powered preamp for use with a microphone cartridge having a unique mechanical interface. The unique mechanical interface allows the phantom powered preamp to function with both ¼ and ½ inch microphone cartridges. The phantom powered preamp including a housing base having a PC board assembly and a connector, the PC board assembly being electrically coupled to the connector; a preamp tip having an adapter and a guard tube, the PC board assembly extending from the housing base to the preamp tip and being electrically coupled to the adapter and the guard tube, the adapter being configured to be electrically coupled to the microphone cartridge, the guard tube being configured to surround a portion of the PC board assembly within the preamp tip; and a first converter being configured to releasably engage the preamp tip or the housing base to reduce edge diffraction.
A phantom powered preamp for use with a microphone cartridge having a unique mechanical interface. The unique mechanical interface allows the phantom powered preamp to function with both 1/4 and 1/2 inch microphone cartridges. The phantom powered preamp including a housing base having a PC board assembly and a connector, the PC board assembly being electrically coupled to the connector; a preamp tip having an adapter and a guard tube, the PC board assembly extending from the housing base to the preamp tip and being electrically coupled to the adapter and the guard tube, the adapter being configured to be electrically coupled to the microphone cartridge, the guard tube being configured to surround a portion of the PC board assembly within the preamp tip; and a first converter being configured to releasably engage the preamp tip or the housing base to reduce edge diffraction.
A testing machine for testing a test specimen includes an actuator assembly configured to be coupled to the test specimen; and a computing device configured to control the actuator assembly, the computing device including a graphical user interface that renders at least a visual representation or a simulated visual representation of at least a parameter of the component or the component changing in accordance with changes of the actual corresponding component on the testing machine.
An impact sensor body (100) for sensing Charpy impact force is disclosed. The sensor body (100) includes a body of material with a plurality of apertures (120,130). The apertures (120,130) are configured within the body of material to form a flexure member (125) orthogonal to a direction of motion to strike an object.
G01N 3/14 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulumInvestigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by spring tension
G01N 3/34 - Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
An electric actuator assembly having a support housing, a first stator magnetic field generating assembly secured to the support housing and a movable armature assembly. The movable armature assembly includes a plate assembly having a center support. The electric actuator assembly also includes a first armature magnetic field generating assembly configured to provide magnetic fields operative with a first stator magnetic field generating assembly to provide linear motion of the movable armature assembly along a reference axis, the first armature magnetic field generating assembly including first and second magnetic assemblies secured to opposite sides of the center support. In another embodiment, the electric linear actuator includes a rotational component coupled to a linear component to move therewith. The rotational component includes an armature magnetic field generating assembly being one of longer or shorter than a stator magnetic field generating assembly.
H02K 41/03 - Synchronous motorsMotors moving step by stepReluctance motors
H01F 7/08 - ElectromagnetsActuators including electromagnets with armatures
F16C 27/08 - Elastic or yielding bearings or bearing supports, for exclusively rotary movement primarily for axial load, e.g. for vertically-arranged shafts
H02K 5/167 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
F16C 17/10 - Sliding-contact bearings for exclusively rotary movement for both radial and axial load
H01F 7/18 - Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
An electric actuator assembly (20) having a support housing (28, 124), a first stator magnetic field generating assembly (26) secured to the support housing (28, 124) and a movable armature assembly (22). The movable armature assembly (22) includes a plate assembly having a center support (150). The electric actuator assembly also includes a first armature magnetic field generating assembly configured to provide magnetic fields operative with a first stator magnetic field generating assembly to provide linear motion of the movable armature assembly (22) along a reference axis, the first armature magnetic field generating assembly including first and second magnetic assemblies secured to opposite sides of the center support. In another embodiment, the electric linear actuator (20) includes a rotational component (27) coupled to a linear component (25) to move therewith. The rotational component (27) includes an armature magnetic field generating assembly being one of longer or shorter than a stator magnetic field generating assembly.
An electric machine (10) includes a housing (12), a rotor (18) rotatably supported by the housing (12) for rotation about a longitudinal axis (15) and a stator assembly (14) fixed secured to the housing (12) spaced apart from a surface of the rotor (18) and concentric with the rotor (18) about the longitudinal axis (15). The stator assembly (14) includes a stator winding comprising circumferentially spaced apart stator teeth (24) about the longitudinal axis (15), the stator teeth (24) having remote ends proximate the surface of the rotor (18). A plurality of sealed cooling channels (38) extend parallel to the longitudinal axis (15) and are disposed between remote ends of successive teeth (24). The cooling channels (38) are formed in resin of the stator assembly (14), the cooling channels (38) being fluidly connected to ports (52A, 52B) in a closed system to circulate cooling fluid to cool the stator assembly (14) and configured to remove heat from the stator assembly (14) proximate the rotor surface. Other aspects include other electric machines and methods of making such machines.
H02K 15/12 - Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
H02K 9/197 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
A transducer body includes a support comprising a pair of clevis halves; a sensor body coupled to each of the clevis halves, wherein the sensor body is disposed between the clevis halves and includes a generally rigid peripheral member disposed about a spaced-apart central hub, the central hub being joined to each of the clevis halves with the peripheral member spaced apart from each clevis half, wherein at least three flexure components couple the peripheral member to the central hub, and wherein the flexure components are spaced-apart from each other at generally equal angle intervals about the central hub; and a lockup assembly configured to selectively inhibit movement of the sensor body relative to the clevis halves.
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
G01M 9/06 - Measuring arrangements specially adapted for aerodynamic testing
G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
An electric machine includes a housing, a rotor rotatably supported by the housing for rotation about a longitudinal axis and a stator assembly fixed secured to the housing spaced apart from a surface of the rotor and concentric with the rotor about the longitudinal axis. The stator assembly includes a stator winding comprising circumferentially spaced apart stator teeth about the longitudinal axis, the stator teeth having remote ends proximate the surface of the rotor. A plurality of sealed cooling channels extend parallel to the longitudinal axis and are disposed between remote ends of successive teeth. The cooling channels are formed in resin of the stator assembly, the cooling channels being fluidly connected to ports in a closed system to circulate cooling fluid to cool the stator assembly and configured to remove heat from the stator assembly proximate the rotor surface. Other aspects include methods of making such machines.
H02K 9/197 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
H02K 15/12 - Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
28.
Method of constructing an electric linear displacement motor
A method of constructing an electric linear displacement motor for use in a testing device includes providing a stator having as stator housing with internal coils and a through bore extending from a first end of the stator housing to the second end of the housing. An armature having magnets retained therein is inserted into the stator housing such of the armature is supported by the first end support and the second end support. A plurality of set screws are inserted into threaded openings proximate both the first end and the second end of the housing. The set screws then support and retain the armature such that there is an annular gap between the armature and the coils.
In one aspect, a transducer body (800, 900, 920, 950, 1000) includes: a support including a pair of clevis halves (16, 18); and a sensor body (12) coupled to each of the clevis halves (16, 18). The sensor body (12) is disposed between the clevis halves (16, 18) and includes a generally rigid peripheral member disposed about a spaced-apart central hub, the central hub being joined to each of the clevis halves (16, 18) with the peripheral member spaced apart from each clevis half (16, 18), where at least three flexure components couple the peripheral member to the central hub. The flexure components are spaced-apart from each other at generally equal angle intervals about the central hub; and a biasing assembly connected between the support and the sensor body and configured to provide a bias force between the sensor body and the support. Unique forms of biasing assemblies are disclosed in each of the transducer bodies (800, 900, 920, 950, 1000).
G01M 9/06 - Measuring arrangements specially adapted for aerodynamic testing
G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
In one aspect, a transducer body, includes a support including a pair of clevis halves; and a sensor body coupled to each of the clevis halves. The sensor body is disposed between the clevis halves and includes a generally rigid peripheral member disposed about a spaced-apart central hub, the central hub being joined to each of the clevis halves with the peripheral member spaced apart from each clevis half, where at least three flexure components couple the peripheral member to the central hub, and where the flexure components are spaced-apart from each other at generally equal angle intervals about the central hub. A biasing assembly connected between the support and the sensor body is configured to provide a bias force between the sensor body and the support.
G01L 5/168 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using counterbalancing forces
G01M 9/06 - Measuring arrangements specially adapted for aerodynamic testing
G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
A wheel support (10; 210; 310) having a transducer body includes a first support member (72; 270; 372) having a spindle (12; 212; 312) configured to support a wheel assembly for rotation about an axis of the spindle (12; 212; 312) and a second support member (70; 272; 370). A plurality of transducer elements (20A-20D; 220A-220D; 320A-320D) connects the first support member (72; 270; 372) and the second support member (70; 272; 370). One of the first support member and the second support member are configured to be mounted to a vehicle and support the vehicle in part on the spindle (12; 212; 312).
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
A transducer sensor body includes a first support structure and a second support structure. A tubular element has a center bore along a longitudinal axis. An elongated first flexure joins the tubular element to the first support structure parallel to the longitudinal axis. The first flexure is rigid to transfer a longitudinal force therethrough along the longitudinal axis and is rigid to transfer an axial force therethrough along an axial axis that is orthogonal to the longitudinal axis. An elongated second flexure joins the tubular element to the second support structure parallel to the longitudinal axis. The second flexure is rigid to transfer a longitudinal force therethrough along the longitudinal axis and is to transfer the axial force therethrough along the axial axis.
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
G01L 3/14 - Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft
G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
A wheel support having a transducer body includes a first support member having a spindle configured to support a wheel assembly for rotation about an axis of the spindle and a second support member. A plurality of transducer elements connects the first support member and the second support member. One of the first support member and the second support member are configured to be mounted to a vehicle and support the vehicle in part on the spindle.
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
B60B 35/02 - Dead axles, i.e. not transmitting torque
A transducer sensor body (10) includes a first support structure (30) and a second support structure (32). A tubular element (20A; 20B) has a center bore along a longitudinal axis (21). An elongated first flexure (26) joins the tubular element (20A; 20B) to the first support structure (30) parallel to the longitudinal axis (21). The first flexure (26) is rigid to transfer a longitudinal force therethrough along the longitudinal axis and is rigid to transfer an axial force therethrough along an axial axis that is orthogonal to the longitudinal axis. An elongated second flexure (28) joins the tubular element (20A; 20B) to the second support structure (32) parallel to the longitudinal axis. The second flexure (28) is rigid to transfer a longitudinal force therethrough along the longitudinal axis and is to transfer the axial force therethrough along the axial axis.
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
36.
Method and systems for off-line control for simulation of coupled hybrid dynamic systems
Systems and methods are provided for controlling the simulation of a coupled hybrid dynamic system. A physical test rig configured to drive the physical structure component of the system and to generate a test rig response as a result of applying a test rig drive signal. A processor is configured with a virtual model of a complementary system to the physical structure component. The processor receives the test rig response and generates a response of the complementary system based on a received test rig response. The system can be driven with a random input. The processor compares the test rig response with the response of the complementary system, the difference being used to form a system dynamic response model.
A load cell body for transmitting forces and moments in plural directions is disclosed. The load cell body comprises a first member, a second member and a plurality of pairs of support columns. The second member includes a plurality of apertures, where a portion of a plurality of portions of the first member extends into each aperture. The plurality of pairs of support column columns are configured for each portion of the first member and the corresponding aperture of the second member, such that each pair of support columns connects the corresponding portion of the first member to the second member.
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
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
A load cell body (10; 10') for transmitting forces and moments in plural directions is disclosed. The load cell body (10; 10') comprises a first member (20), a second member (24) and a plurality of pairs of support columns (44, 64, 84). The second member (24) includes a plurality of apertures (40, 50, 70), where a portion of a plurality of portions of the first member (20) extends into each aperture (40, 50, 70). The plurality of pairs of support column columns (44, 64, 84) are configured for each portion of the first member (20) and the corresponding aperture (40, 50, 70) of the second member (24), such that each pair of support columns (44, 64, 84) connects the corresponding portion of the first member (20) to the second member (24).
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
An aspect of the invention is a testing system (10) for applying loads to a test specimen (12). The testing system (10) includes an actuator (14) and a first support portion (15) supporting the actuator (14). The actuator (14) is configured to support a first end of the test specimen (12), while a second support portion (13) configured to support a second end of the test specimen (12). In various embodiments, combination of sensors that can include displacement sensor and/or accelerometer(s) provide associated output signals that are received by a displacement compensator (50; 50'; 60) that is configured to provide a displacement output signal indicative of differential displacement between first end and the second end of the test specimen (12).
An aspect of the invention is a testing system for applying loads to a test specimen. The testing system includes the actuator and the first support portion supporting the actuator. The actuator is configured to support a first end of the test specimen, while a second support portion configured to support a second end of the test specimen. In various embodiments, combination of sensors that can include displacement sensor and/or accelerometer(s) provide associated output signals that are received by a displacement compensator that is configured to provide a displacement output signal indicative of differential displacement between first end and the second end of the test specimen.
A system and method for testing a test vehicle (14) or a system on the test vehicle (14) for warning the presence of an object proximate the test vehicle (14) or a system to avoid a collision includes a self-powered, independently movable target (12, 12A-12G) configured to be positioned proximate the test vehicle (14), the target (12, 12A-12G) comprising a support frame having wheels, a motor (37) operably coupled to one or more wheels, brakes (35) operably coupled to each wheel and a control system coupled to the motor (37), brakes (35) and wheels and configured to control acceleration, braking and steering of the wheels, and a collision avoidance system (40) operable with the control system and configured to control the target (12, 12A-12G) to avoid a collision with the test vehicle.
An environmental chamber (104) includes an enclosure having opposed walls (106) each wall (106) having an aperture (108) of size to receive a test specimen support (111) therethrough. The apertures (108) are aligned with each other along on a reference axis (107). A forced air source (1204) is configured to supply forced air in a direction to intersect with the reference axis (104) within the enclosure. A diverter (300; 400; 700) is positioned between the forced air source (1204) and the reference axis (109). The diverter (300; 400; 700) is configured to receive the forced air and control the air flow past different portions of the reference axis (107). The environmental chamber (104) is used with a load frame (100) having test specimen supports (111; 1020; 1021) extending into the opposed apertures (108). A method of directing more force air at the test specimen supports (111; 1020; 1021) than at at least a portion of the test specimen (102; 1011) to maintain a selected temperature gradient in the test specimen (102; 1011) is also provided.
An environmental chamber includes an enclosure having opposed walls each wall having an aperture of size to receive a test specimen support therethrough. The apertures are aligned with each other along on a reference axis. A forced air source is configured to supply forced air in a direction to intersect with the reference axis within the enclosure. A diverter is positioned between the forced air source and the reference axis. The diverter is configured to receive the forced air and control the air flow past different portions of the reference axis. The environmental chamber is used with a load frame having test specimen supports extending into the opposed apertures. A method of directing more force air at the test specimen supports than at at least a portion of the test specimen to maintain a selected temperature gradient in the test specimen is also provided.
An environmental chamber (104) includes an enclosure having opposed walls (106) each wall (106) having an aperture (108) of size to receive a test specimen support (111) therethrough. The apertures (108) are aligned with each other along on a reference axis (107). A forced air source (1204) is configured to supply forced air in a direction to intersect with the reference axis (104) within the enclosure. A diverter (300; 400; 700) is positioned between the forced air source (1204) and the reference axis (109). The diverter (300; 400; 700) is configured to receive the forced air and control the air flow past different portions of the reference axis (107). The environmental chamber (104) is used with a load frame (100) having test specimen supports (111; 1020; 1021) extending into the opposed apertures (108). A method of directing more force air at the test specimen supports (111; 1020; 1021) than at at least a portion of the test specimen (102; 1011) to maintain a selected temperature gradient in the test specimen (102; 1011) is also provided.
A system for controlling a speed of a pump jack system (10) having a variable speed prime mover (32) includes a sensor (60, 93) attached to the pump jack system (10). The sensor (60, 93) is capable of detecting an absolute position of a first component (14, 44) of the pump jack system (10) relative to a second component (12, 50) of the pump jack system (10) and configured to send a signal proportional to the sensed absolute position (47A, 147 A) and/or velocity (47B, 147B) and/or acceleration (47C, 147C). The system (10) includes process circuitry (49, 149) configured to accept the signal and perform a calculation related to absolute position (47A, 147 A) and/or velocity (47B, 147B) and/or acceleration (47C, 147C) of the first component (14, 44) relative to the second component (12, 50). The system (10) includes a controller (72, 172) that is configured to receive the signal from the process circuitry (49, 149) and configured to send a signal to the prime mover (32) to adjust a rotational speed of the prime mover (32) and the position of the first component relative (14, 44) to the second component (12, 50).
A test system and method for testing a coupled hybrid dynamic system in simulated motion along a path (242) includes a physical test rig (206) configured to test a physical component (208). A processor (30) is configured with modeled test data (218), a first virtual model portion and a second virtual model portion of the coupled hybrid dynamic system, the first virtual model portion (204), the second virtual model (202) portion and the physical component (80) comprising the coupled hybrid dynamic system. The processor (30) is configured to control the test rig (206) such that the component under test (208) responds to the second virtual model portion (202), that in turn receives a first input (272) comprising the modeled test data (218), a second input (216) being motion of the first virtual model portion (204) of the coupled hybrid dynamic system, a third input (214) being a control mode response from the test rig having (206) the physical component (208) under test and a fourth input (272) comprising guidance controls for the coupled hybrid dynamic system.
A force applicator assembly (10; 10') is disclosed to calibrate an in-situ force transducer (or load cell) (104) in a force (load) applying test machine (125). The force applicator (10) includes stationary member (22; 22') configured to be secured to fixed structure, a moving member (20; 20'), a load cell (12) operably coupled to an end of the moving member (20; 20'); and a differential screw assembly (24; 24") connecting the moving member (20; 20') to the stationary member (22; 22'). A coupling assembly (14) can be used to assure that only tension or compression loads are applied. The coupling assembly (14) can be configured if desired such that no tension or compression loads can be applied. A method to calibrate an in-situ force transducer (104) in a force applying test machine (205) is also provided and uses a force generator (16; 16'; 125) and the coupling assembly (14).
A force applicator assembly is disclosed to calibrate an in-situ force transducer (or load cell) in a force (load) applying test machine. The force applicator includes stationary member configured to be secured to fixed structure, a moving member, a load cell operably coupled to an end of the moving member, and a differential screw assembly connecting the moving member to the stationary member. A coupling assembly can be used to assure that only tension or compression loads are applied. The coupling assembly can be configured if desired such that no tension or compression loads can be applied. A method to calibrate an in-situ force transducer in a force applying test machine is also provided and uses a force generator and the coupling assembly.
F16D 1/04 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with hub and longitudinal key
G01L 25/00 - Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
51.
Mobile application interactive user interface for a remote computing device monitoring a test device
Remotely monitoring a test on a test specimen includes receiving information pertaining to the test, rendering on a remote computing device display an information message having portions indicative of a testing device, of information related to the testing device or a test being conducted on the testing device, and of time that has elapsed since the second portion has occurred, and updating the third portion indicative of the time that has elapsed. A test operation monitoring system includes an image capture device, and a computing device operatively connected to the image capture device to receive information on the testing operation from the image capture device, the computing device having a controller configured to receive information pertaining to the testing operation and to render on a display an information message indicative of parameters of the testing device at a selectable amount of progress through the testing operation.
Remotely monitoring a test on a test specimen includes receiving information pertaining to the test, rendering on a remote computing device (11; 156; 157; 158) display an information message (12A;12B;12C) having portions indicative of a testing device (130), of information related to the testing device (130) or a test being conducted on the testing device (130), and of time that has elapsed (22) since the second portion has occurred, and updating the third portion indicative of the time that has elapsed (22). A test operation monitoring system includes an image capture device (132), and a computing device (1120) operatively connected to the image capture device (132) to receive information on the testing operation from the image capture device (132), the computing device (1120) having a controller (134) configured to receive information pertaining to the testing operation and to render on a display an information message (12A;12B;12C) indicative of parameters of the testing device at a selectable amount of progress through the testing operation.
A method and an arrangement of controlling simulation of a coupled hybrid dynamic system comprising a component under test and a virtual model includes driving the physical component under test of the system on a test rig over a period of time to conduct a test by applying an initial test drive signal input to the test rig to generate a test rig response. At least a portion of the test rig response is inputted into the virtual model of the system to obtain a model response of the system. A condition of the physical component under test is assessed during at least a portion of the period of time to conduct the test based on comparing another portion of the test rig response with the model response where an output relating to the assessment is recorded or rendered.
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
A method and an arrangement of controlling simulation of a coupled hybrid dynamic system (70,72) comprising a component under test (80) and a virtual model (70) includes driving the physical component under test (80) of the system on a test rig (72) over a period of time to conduct a test by applying an initial test drive signal input (114) to the test rig (72) to generate a test rig response. At least a portion of the test rig response (94) is inputted into the virtual model (70) of the system to obtain a model response of the system (100). A condition of the physical component under test (80) is assessed during at least a portion of the period of time to conduct the test based on comparing another portion of (96) the test rig response with the model response (100) where an output relating to the assessment is recorded or rendered.
A test system and method for testing a coupled hybrid dynamic system in simulated motion along a path (242) includes a physical test rig (206) configured to test a physical component (208). A processor (30) is configured with modeled test data (218), a first virtual model portion and a second virtual model portion of the coupled hybrid dynamic system, the first virtual model portion (204), the second virtual model (202) portion and the physical component (80) comprising the coupled hybrid dynamic system. The processor (30) is configured to control the test rig (206) such that the component under test (208) responds to the second virtual model portion (202), that in turn receives a first input (272) comprising the modeled test data (218), a second input (216) being motion of the first virtual model portion (204) of the coupled hybrid dynamic system, a third input (214) being a control mode response from the test rig having (206) the physical component (208) under test and a fourth input (272) comprising guidance controls for the coupled hybrid dynamic system.
A test system and a method includes applying a test drive signal to a physical test rig (10,200) having a compliant actuator assembly (150) for imparting loads to a test specimen (18). An actual response signal of the physical test rig (10) and the test specimen (18) to the test drive signal is obtained and an error as a function of the actual response signal and a selected response signal is calculated. If the error has not reached a selected threshold a new drive signal based on the error and a relaxation gain factor is obtained. The new drive signal is obtained and applied until the error reaches the selected threshold.
A tire testing machine (10) and a method for testing operating the same includes a tire and wheel assembly (17) having a sensor (40) configured to measure a parameter related to the tire and wheel assembly (17) as it rotates on a rotating element (12). A holder (19) supports the tire and wheel assembly (17). A processor (60, 90) is configured to receive an input at least based on the output signal from the sensor, and provide an output signal (64, 91) indicative of a parameter of a contact patch (24) between a tire (14) of the tire and wheel assembly (17) and the rotating element (12). Controlled element(s) (29, 132) are configured to vary a parameter related to the contact patch (24) and/or friction.
A tire testing machine includes a tire and wheel assembly having a sensor configured to measure a parameter related to the tire and wheel assembly as it rotates on a rotating element. A holder supports the tire and wheel assembly. A processor is configured to receive an input at least based on the output signal from the sensor, and provide an output signal indicative of a parameter of a contact patch between a tire of the tire and wheel assembly and the rotating element. Controlled element(s) are configured to vary a parameter related to the contact patch and/or friction.
In one aspect, a transducer body includes a support having clevis halves. The sensor body includes a generally rigid peripheral member disposed about a spaced-apart central hub joined to each of the clevis halves. At least three flexure components couple the peripheral member to the hub. The flexure components are spaced-apart from each other at generally equal angle intervals about the hub; the sensor body further including a flexure assembly for some flexure components joining the flexure component to at least one of the hub and the peripheral member, the flexure assembly being compliant for forces in a radial direction from the hub to the peripheral member. Each flexure assembly is configured such that forces transferred concentrate strain at a midpoint along the length of each corresponding flexure component.
G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
G01M 9/06 - Measuring arrangements specially adapted for aerodynamic testing
G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
60.
TWO-AXIS SENSOR BODY FOR A LOAD TRANSDUCER AND PLATFORM BALANCE WITH THE SAME
A transducer body (10) including a support having a pair of clevis halves (16, 18), and a sensor body (12; 102; 202; 242) coupled to each of the clevis halves (16, 18), the sensor body (12; 102; 202; 242) disposed between the clevis halves 16, 18 and configured to deflect with forces along two orthogonal axes. The sensor body (12; 102; 202; 242) includes a generally rigid peripheral member (22) disposed about a spaced-apart central hub (20), the central hub (20) joined to each of the clevis halves (16, 18) with the peripheral member (22) spaced apart from each clevis half. At least three flexure components (31-34; 112A-112B; 212; 251-254) couple the peripheral member 22 to the central hub 20. The flexure components (31-34; 112A-112B; 212; 251-254) are spaced-apart from each other at generally equal angle intervals about the central hub 20. The sensor body (12; 102; 202; 242) further includes a flexure assembly (51A- 51B; 115A-115B) for each of the at least some flexure components (31-34; 112A-112B; 212; 251-254) joining the flexure component (31-34; 112A-112B; 212; 251-254) to at least one of the central hub (20) and the peripheral member (22), the flexure assembly (51A- 51B; 115A-115B) being compliant for forces in a radial direction from the central hub (20) through the flexure component (31-34; 112A-112B; 212; 251-254) and to the peripheral member (22), wherein each flexure assembly (51A- 51B; 115A-115B) is configured such that forces transferred between central hub (20) and the peripheral member (22) concentrate strain at a midpoint (66) along the length of each corresponding flexure component (31-34; 112A-112B; 212; 251-254). A platform balance (300) may be provided with transducer bodies (10) as shown and described.
G01M 9/06 - Measuring arrangements specially adapted for aerodynamic testing
G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
A hand-held or portable vibration sensor device having a housing and a sensor body which generally provides a single point of contact with the machinery or apparatus for which vibration measurement is desired. In one aspect, the sensor body comprises a vibration sensor element such as an accelerometer for measuring vibration. In another aspect, a force sensor such as a force sensing resistor or load cell is provided to reduce the impact of forces applied to said hand-held vibration sensor such as a force applied through a handle during measurement. In another aspect, a compensation circuit processes the out put from a vibration sensor element to provide a relatively flat frequency response over a desired operational frequency range. The hand-held vibration sensor may also comprise a rubber isolation member disposed between the sensor body and force sensor.
A servo actuator system (10) and method of operating the same includes a dual acting actuator (16,17) comprising an actuator body (14,19) and a movable member (12,15) movable in the actuator body to define a first and second chamber on each side of the movable member (12,15). A first port (36) is fluidly coupled to the first chamber and a second port (38) is fluidly coupled to the second chamber. A fluid pump (20) having a return (22) is provided. A proportional valve assembly (18,70,72) is fluidly coupled to the fluid pump, return and the first and second ports. The proportional valve assembly (18,70,72) includes a plurality of metering orifices (31-34). A controller (40) is operably coupled to the proportional valve assembly (18,70,72) to control the plurality of metering orifices (31-34) to generate a load vector having magnitude and direction and wherein an actual position of a movable member (12,15) in an actuator body (14, 19) is indeterminate.
Systems and methods are provided for controlling the simulation of a coupled hybrid dynamic system comprising modeled components in a virtual model (70'; 70") and physical components (80'; 80"; 80' "), the virtual model (70'; 70") being a complementary system to the physical structural components (80'; 80"; 80' "), the virtual model (70') comprising model(s) of one or more disembodied assemblies, or the virtual model (70") being complementary to a plurality of disembodied physical assemblies. A physical test rig (72';72";72"') is configured to drive the physical structural components (80'; 80"; 80" ') and generate a test rig response comprising a first component (82'; 82"; 82' ") or coupling response (324) corresponding to an input to the virtual model (70'; 70"), and a second component (84'; 84"; 84" ') or convergence response (326) that is compared to an output of the virtual model (70'; 70"). A system dynamic response model (76') is obtained from the (82'; 82"; 82" ') or coupling response (324), the second component (84'; 84"; 84' ") or convergence response (326) and the virtual model (70') comprising model(s) of one or more disembodied assemblies, or the virtual model (70") being complementary to a plurality of disembodied physical assemblies.
An autonomous vehicle control system (e.g., 105; 600) for use on a vehicle, such as a motorcycle (e.g., 100) or an all-terrain vehicle (ATV) to autonomously control the vehicle without a driver during vehicle testing is provided. The vehicle control system comprises a moment generator (e.g., 110) coupleable to the vehicle and configured to selectively generate a moment in either of first and second directions. The vehicle control system also includes a control system (e.g., 112; 120; 800) operably coupled to the moment generator and configured to control the moment generator to selectively impart moments on the vehicle to stabilize the vehicle or to introduce disturbances on the vehicle.
G01L 5/28 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
A servo actuator system and method of operating the same includes a dual acting actuator comprising an actuator body and a movable member movable in the actuator body to define a first and second chamber on each side of the movable member. A first port is fluidly coupled to the first chamber and a second port is fluidly coupled to the second chamber. A fluid pump having a return is provided. A proportional valve assembly is fluidly coupled to the fluid pump, return and the first and second ports. The proportional valve assembly includes a plurality of metering orifices. A controller is operably coupled to the proportional valve assembly to control the plurality of metering orifices to generate a load vector having magnitude and direction and wherein an actual position of a movable member in an actuator body is indeterminate.
A mechanical vibration switch having a magnet connected to a bar that rotates about an axis, an inertial mass connected to the bar, a magnetic material part disposed in a predetermined spaced apart relation from the magnet, a spring, a stop, and an electrical relay mechanically actuated by the bar. The magnetic material part is adjusted parallel to the magnet such that the magnetic force varies approximately linearly with the common surface area S between the face of the magnet and the face of the magnetic material part.
A method of constructing an electric linear displacement motor for use in a testing device includes providing a stator having as stator housing with internal coils and a through bore extending from a first end of the stator housing to the second end of the housing. First and second end supports are connected to the first and second ends of the stator housing. An armature having magnets retained therein is inserted into the stator housing such of the armature is supported by the first end support and the second end support. A plurality of set screws are inserted into threaded openings proximate both the first end and the second end of the housing. The set screws then support and retain the armature such that there is an annular gap between the armature and the coils.
A testing machine for testing a test specimen includes an actuator assembly configured to be coupled to the test specimen; and a computing device configured to control the actuator assembly, the computing device including a graphical user interface that renders at least a visual representation or a simulated visual representation of at least a parameter of the component or the component changing in accordance with changes of the actual corresponding component on the testing machine.
A test specimen holder includes a specimen engaging portion operable to selectively engage and hold a test specimen. The test specimen holder includes a first shield disposed around the specimen engaging portion wherein a first gap is formed between the shield and the specimen engaging portion to remove heat from the specimen engaging portion.
A testing apparatus includes a crosshead and a head assembly. The head assembly includes a head cover having an interior volume. An electric actuator, controls and other electric components are located within the interior volume, wherein the motor, controls and other electric components generates heat when energized. A divider within the interior volume separates a first volume from a second volume. The first volume includes the heat generating electric motor, controls and electric components and the second volume contains substantially no heat generating components. The head assembly includes at least one fan within the second volume that draws cool air from outside the head cover and forces the cool air through the second volume and into the first volume to remove heat.
H02K 9/04 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
H02K 41/00 - Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
H02K 41/03 - Synchronous motorsMotors moving step by stepReluctance motors
A testing machine includes a pair of vertical columns, a crosshead selectively positionable on the vertical columns, and a head assembly supported by and movable with the crosshead. The head assembly has an electric actuator, a support that can be selectively moved from a first position when the test machine is operated to a lowered position. The support supporting components are related to powering or controlling the electric actuator, said components are exposed for servicing in the lowered position.
An electric linear displacement motor for use in a testing apparatus includes a stator assembly having a stator housing and a plurality of coils within the stator housing. An armature is positioned within the stator housing and includes a plurality of magnets along a length of the armature. A bearing assembly is attached to the first end of the stator housing and includes a bearing housing containing a bearing. A first end portion of the armature engages and is carried by the bearing. A brake assembly is coupled to the first end of the armature and the bearing housing. The brake assembly includes a moving portion coupled to the armature and a non-moving portion coupled to the bearing housing wherein the moving portion has less mass than the non-moving portion and therefore reduces the moving mass of the armature.
H02K 7/102 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
H02K 41/03 - Synchronous motorsMotors moving step by stepReluctance motors
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
A test specimen holder (20, 21) includes a specimen engaging portion (30) operable to selectively engage and hold a test specimen (11). The test specimen holder (20, 21) includes a first shield (34) disposed around the specimen engaging portion (30) wherein a first gap (36) is formed between the shield (34) and the specimen engaging portion (30) to remove heat from the specimen engaging portion (30).
A test specimen holder (20, 21) includes a specimen engaging portion (30) operable to selectively engage and hold a test specimen (11). The test specimen holder (20, 21) includes a first shield (34) disposed around the specimen engaging portion (30) wherein a first gap (36) is formed between the shield (34) and the specimen engaging portion (30) to remove heat from the specimen engaging portion (30).
A test specimen holder (20, 21) includes a specimen engaging portion (30) operable to selectively engage and hold a test specimen (11). The test specimen holder (20, 21) includes a first shield (34) disposed around the specimen engaging portion (30) wherein a first gap (36) is formed between the shield (34) and the specimen engaging portion (30) to remove heat from the specimen engaging portion (30).
A method of constructing an electric linear displacement motor (20) for use in a testing device (12) includes providing a stator (22) having as stator housing (28) with internal coils (23) and a through bore extending from a first end (34) of the stator housing (28) to the second end (36) of the housing (28). First and second end supports (54 and 56) are connected to the first and second ends (34 and 36) of the stator housing (28). An armature (24) having magnets retained therein is inserted into the stator housing (28) such of the armature (24) is supported by the first end support (54) and the second end support (56). A plurality of set screws (60) are inserted into threaded openings (32) proximate both the first end and the second end (34 and 36) of the housing(28). The set screws (60) then support and retain the armature (24) such that there is an annular gap between the armature (24) and the coils (23).
A testing apparatus (12) includes a crosshead (151) and a head assembly (150). The head assembly (150) includes a head cover (156) having an interior volume (182). An electric actuator (152), controls and other electric components (158) are located within the interior volume (182, 184), wherein the motor (152), controls and other electric components (158) generate heat when energized. A divider (170) within the interior volume (182, 184) separates a first volume (182) from a second volume (184). The first volume (182) includes the heat generating electric motor (152), controls and electric components (158) and the second volume (184) contains substantially no heat generating components. The head assembly (150) includes at least one fan (202) within the second volume that draws cool air from outside the head cover (156) and forces the cool air through the second volume (184) and into the first volume (182) to remove heat.
A testing machine (8) for testing a test specimen (18) includes controllable movable element (15) configured to be coupled to the test specimen(18) and a computing device (9; 23)configured to control controllable movable element (15). Generally,, the computing device (9; 23) including a graphical user interface (47) that has one or more features that provides situational awareness to the user and/or aids in configuring the test machine (8).
A testing machine includes a base (127), a support member (112), a controllable movable element (22) and a head assembly (114) adjustably coupled to the support member to obtain different positions relative to the base (127). The head assembly (114) can be positioned in a service position whereat service is in a convenient position using limited controls and/or includes features to enhance service of components in the head assembly (114). A method of positioning the head assembly (114) is also provided.
A method and system for correcting for the inertial error of a transducer as a function of frequency by applying a delay to a leading signal of the transducer to provide phase compensation.
G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
G01L 19/02 - Arrangements for preventing, or for compensating for, effects of inclination or acceleration of the measuring deviceZero-setting means
81.
TRANSDUCER ACCELERATION COMPENSATION USING A DELAY TO MATCH PHASE CHARACTERISTICS
A method and system for correcting for the inertial error of a transducer (10) as a function of frequency by applying a delay (21, 48) to a leading signal of the transducer (10) to provide phase compensation.
G01L 19/02 - Arrangements for preventing, or for compensating for, effects of inclination or acceleration of the measuring deviceZero-setting means
G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
82.
Method and systems for off-line control for simulation of coupled hybrid dynamic systems
Systems and methods are provided for controlling the simulation of a coupled hybrid dynamic system. A physical test rig configured to drive the physical structure component of the system and to generate a test rig response as a result of applying a test rig drive signal. A processor is configured with a virtual model of a complementary system to the physical structure component. The processor receives the test rig response and generates a response of the complementary system based on a received test rig response. The system can be driven with a random input. The processor compares the test rig response with the response of the complementary system, the difference being used to form a system dynamic response model.
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
A mobile or cloud communication platform for a test facility to monitor various testing devices. The mobile communication platform is configured to transmit data or information to a remote test platform remote from a test facility or laboratory. In some embodiments described, the communication platform is configured to interface with the one or more controller units to receive input or output data from the one or more test devices and transmit the input output data to the remote test platform via a messaging protocol initiated by the communication platform coupled to the testing device. Various graphical user interfaces are further described.
A mobile application tool is disclosed to provide remote access to data, and in particular test data. In embodiments disclosed, the mobile application tool includes a mobile test interface component configured to receive an access input associated with one or more testing devices and invoke an interface to a remote test platform to retrieve one or more testing device selections for the one or more testing devices associated with the access input. The tool includes a display function configured to receive the one or more testing device selections and invoke a graphical user interface to display the one or more test device selections and data associated with the one or more test device selections.
A test system configured to impart a body disturbance to a test specimen and measure motion or displacement of the test specimen in response to the input body disturbance. The system includes one or more actuator devices configured to replicate motion or displacement of the body imparted through the original input body disturbance utilizing the measured motion or displacement. As disclosed, the system includes algorithms or instructions to generate control parameters utilizing the measured motion or displacement to control operation of the one or more actuator devices. The force applied through the one or more actuator devices to replicate the measured motion or displacement is used to determine the force or load applied to the body via the input disturbance.
A test system configured to impart a body disturbance to a test specimen and measure motion or displacement of the test specimen in response to the input body disturbance. The system includes one or more actuator devices (110, 170, 172, 174, 180, 214, 226, 230, 236, 240) configured to replicate motion or displacement of the body (104) imparted through the original input body disturbance utilizing the measured motion or displacement. As disclosed, the system includes algorithms or instructions to generate control parameters (126) utilizing the measured motion or displacement (108) to control operation of the one or more actuator devices. The force applied through the one or more actuator devices to replicate the measured motion or displacement (108) is used to determine the force or load applied to the body (104) via the input disturbance.
A hand-held or portable vibration sensor device having a housing and a sensor body which generally provides a single point of contact with the machinery or apparatus for which vibration measurement is desired. In one aspect, the sensor body comprises a vibration sensor element such as an accelerometer for measuring vibration. In another aspect, a force sensor such as a force sensing resistor or load cell is provided to reduce the impact of forces applied to said hand-held vibration sensor such as a force applied through a handle during measurement. In another aspect, a compensation circuit processes the out put from a vibration sensor element to provide a relatively flat frequency response over a desired operational frequency range. The hand-held vibration sensor may also comprise a rubber isolation member disposed between the sensor body and force sensor.
09 - Scientific and electric apparatus and instruments
Goods & Services
electronic and mechanical vibration switches; vibration transmitters; electronic measuring instruments used to provide a known mechanical input to be used for the system verification and calibration of vibration sensors, namely, portable shakers; handheld vibration meters; electronic force measuring instruments, namely, impact hammers; intrinsic safety barriers, namely, electronic signal barriers used to limit current and voltage to prevent ignition of hazardous substances in the atmosphere; signal conditioners for use with piezoelectric force and vibration sensors; electrical connection boxes, namely termination boxes; and switch boxes
An apparatus and system for sensing vibration in rotary or reciprocating machinery, such as motors, pumps, fans, gearboxes, compressors, turbo-machinery or high-speed spindles, which comprises a mechanical isolation member (14) interposed between a sensor base (15) and a main sensor body (11). In one aspect, the mechanical isolation member comprises a coaxial cylinder of plastic, rubber or polyurethane which is compressed between the sensor base and main sensor body.
A torque transfer coupling includes a shaft and a first second set of hydraulic devices. Each hydraulic device of the first set of hydraulic devices has a first end operably connected to a first end of the shaft, wherein the hydraulic devices of the first set of hydraulic devices are disposed about an axis of the shaft. Each hydraulic device of the second set of hydraulic devices has a first end operably connected to a second end of the shaft, and wherein the hydraulic devices of the second set of hydraulic devices are disposed about the axis of the shaft. Each hydraulic device can include a piston and cylinder assembly wherein extension and retraction of each piston of each hydraulic device is generally tangential to a portion of a circle encircling the shaft.
One aspect of the invention is a test assembly comprising a prime mover, an actuator assembly and a torque transfer coupling. The actuator assembly has an end configured to be attached to a shaft of a portion of a test specimen such as a wind turbine assembly. The actuator assembly has a shaft supported for rotation by hydraulic bearings. The torque transfer coupling connects the primer mover to the actuator assembly.
One aspect of the invention is a test assembly comprising a prime mover (26), an actuator assembly (34, 34', 200, 250, 500, 550, 560, 570) and a torque transfer coupling (30, 400, 400', 400", 400'", 600). The actuator assembly (34, 34', 200, 250, 500, 550, 560, 570) has an end configured to be attached to a shaft of a portion of a test specimen such as a wind turbine assembly (22). The actuator assembly (34, 34', 200, 250, 500, 550, 560, 570) has a shaft (32) supported for rotation by hydraulic bearings. The torque transfer coupling (30, 400, 400', 400", 400'", 600) connects the primer mover (26) to the actuator assembly (34, 34', 200, 250, 500, 550, 560, 570).
A system includes a support, an actuator and a swivel joint coupling the actuator to the support. The swivel joint includes a first base member, a second base member, and a spider positioned between the first and second base members. The spider includes a center support and first and second bearing support elements. Each bearing support element has an arcuate surfaces adapted to form joints with the first and second base members. In one embodiment, at least one shim element disposed is between at least one of the first and second bearing support elements and the center support.
A transducer, including: a housing; a bridge sensor circuit disposed within the housing and including at least one micro electro-mechanical systems (MEMS) sensing elements and first and second output ports; circuitry disposed within the housing; and an input/output (I/O) line electrically connected to the circuitry, accessible at an exterior of the housing, and adapted for receipt of input voltage or current. The circuitry is for generating a single data signal that combines respective outputs of the first and second output ports, and transmitting the DC- coupled single data signal on the I/O line. The circuitry is for generating and transmitting to the bridge sensor circuit an excitation current or voltage using the input voltage or current.
B81B 7/02 - Microstructural systems containing distinct electrical or optical devices of particular relevance for their function, e.g. microelectro-mechanical systems [MEMS]
B81C 1/00 - Manufacture or treatment of devices or systems in or on a substrate
G01C 25/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
A transducer, including: a housing; a bridge sensor circuit disposed within the housing and including at least one micro electro-mechanical systems (MEMS) sensing elements and first and second output ports; circuitry disposed within the housing; and an input/output (I/O) line electrically connected to the circuitry, accessible at an exterior of the housing, and adapted for receipt of input voltage or current. The circuitry is for generating a single data signal that combines respective outputs of the first and second output ports, and transmitting the DC-coupled single data signal on the I/O line. The circuitry is for generating and transmitting to the bridge sensor circuit an excitation current or voltage using the input voltage or current.
A multiple degree of freedom displacement transducer and body thereof is used to measure linear displacements along and/or rotational or pivotal displacements about up to three orthogonal axes. In one embodiment, a displacement transducer body includes a first pivoting assembly and a second pivoting assembly. Each pivoting assembly has a support member pivotable relative to another portion about two orthogonal axes. A structure joins said another portion of each pivoting assembly together. In another embodiment, a displacement transducer includes a first support member, a second support member, and a cross flexure assembly joining the first support member to the second support member. The cross flexure assembly is arranged to allow the first support member to pivot relative to the second support member about two intersecting orthogonal axes. An angular sensing device is arranged to provide an output signal related to angular movement of the first support member relative to the second support member about at least one of the orthogonal axes.
G01B 5/25 - Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapersMeasuring arrangements characterised by the use of mechanical techniques for testing the alignment of axes for testing the alignment of axes
99.
MULTIPLE DEGREE OF FREEDOM DISPLACEMENT TRANSDUCER
A multiple degree of freedom displacement transducer (50) and body (51) thereof is used to measure linear displacements along and/or rotational or pivotal displacements about up to three orthogonal axes (62, 64, 66). In one embodiment, a displacement transducer body (51) includes a first pivoting assembly (58) and a second pivoting assembly (58). Each pivoting assembly (58) has a support member (72) pivotable relative to another portion (70) about two orthogonal axes (80, 92). A structure (52) joins said another portion (70) of each pivoting assembly (58) together. In another embodiment, a displacement transducer includes a first support member (70), a second support member (72), and a cross flexure assembly (74) joining the first support member (70) to the second support member (72). The cross flexure assembly (74) is arranged to allow the first support member (70) to pivot relative to the second support member (72) about two intersecting orthogonal axes (80, 92). An angular sensing device (77) is arranged to provide an output signal related to angular movement of the first support member (70) relative to the second support member (72) about at least one of the orthogonal axes (80, 92).
G01B 21/22 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapersMeasuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for testing the alignment of axes
A hydraulic fluid sampler (20, 20', 20", 20'", 20'") and a method for obtaining a hydraulic fluid sample includes a sample container holder (26) configured to support a sample container (28) mounted thereto in an inverted position and a non-inverted position. In the inverted position, the sample container holder (26) is configured to flush the sample container (28) with hydraulic fluid so as to flush away any contaminates that may be present. In the non-inverted position, the sample container holder (26) is configured to fill the sample container (28) with hydraulic fluid.
