Abstract

Provided is a method by which a resonant accelerometer comprising a resonator provides a compensated acceleration output. The present method may comprise the steps of: determining a first resonant frequency of the resonator without applying acceleration to the accelerator; determining a scale factor for the resonator; applying acceleration to the accelerometer and determining a second resonant frequency of the resonator in response; determining the amount of change in frequency by using the first resonant frequency and the second resonant frequency; and providing a compensated acceleration output by using the first resonant frequency, the amount of change in frequency, and the scale factor.

IPC Classes  ?

• G01P 21/02 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass of speedometers
• G01P 15/097 - Measuring accelerationMeasuring decelerationMeasuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by vibratory elements
• G01P 15/125 - Measuring accelerationMeasuring decelerationMeasuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by capacitive pick-up
• B81B 7/00 - Microstructural systems
• G01P 15/08 - Measuring accelerationMeasuring decelerationMeasuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values

Abstract

The present invention relates to an apparatus for providing an azimuth angle, i.e., an apparatus for calculating an azimuth angle using an angular rate sensed by a gyro sensor, which has rotated by an arbitrary angle, and an angle of rotation. The apparatus for providing an azimuth angle in accordance with one embodiment of the present invention may comprise a rotating member, an angular rate sensor mounted on the rotating member, and a driving unit configured to rotate the rotating member by a first angle. The angular rate sensor may be configured to sense an angular rate of the rotating member. The apparatus may further comprise an azimuth angle estimation unit configured to estimate an azimuth angle of the apparatus based on the sensed angular rate and the first angle.

IPC Classes  ?

• G01C 19/00 - GyroscopesTurn-sensitive devices using vibrating massesTurn-sensitive devices without moving massesMeasuring angular rate using gyroscopic effects
• G01P 3/44 - Devices characterised by the use of electric or magnetic means for measuring angular speed
• G01P 15/08 - Measuring accelerationMeasuring decelerationMeasuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values
• G01C 19/38 - Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation

Abstract

The present invention relates to an apparatus for providing an azimuth and, more specifically, to an apparatus for providing an azimuth, which calculates an azimuth using an angular velocity detected by a gyro sensor rotating at an arbitrary angle and a rotated angle. The apparatus for providing an azimuth, according to one embodiment of the present invention comprises: an angular velocity sensor for detecting an angular velocity applied to a main body; a driving unit for rotating the angular velocity sensor at an arbitrary angle; and an azimuth calculation unit for calculating an azimuth at which the angular velocity sensor is facing by using the sensed angular velocity and the angle.

IPC Classes  ?

• G01C 19/34 - Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes
• G01C 19/38 - Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation