Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1995-02-22
1997-04-01
Williams, Hezron E.
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
7350412, 7350413, G01C 1900, G01P 1508
Patent
active
056168640
ABSTRACT:
A yaw rate sensor having a vibrating ring microstructure surrounded by electrodes capacitively coupled to the ring has vibration responsive circuits with inputs connected to several of the sensors, the circuits having outputs connected to others of the electrodes for driving or influencing the vibration. The circuits produce a main drive voltage to excite the ring to resonance, a feedback drive voltage to provide force-to-rebalance correction, and a dc compensation voltage to tune the ring to a single resonance frequency. An economy of electrode space is achieved by using some electrodes for more than one function, e.g. feedback and compensation.
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Michael W. Putty et al., "A Micromachined Vibrating Ring Gyroscope," Solid State Sensor and Actuator Workshop, Jun. 1994, pp. 213-220.
Johnson Jack D.
Liem Fie A.
Delco Electronics Corp.
Moller Richard A.
Navarre Mark A.
Williams Hezron E.
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