Angular rate sensing device

Details Angular rate sensing device Angular rate sensing device

1997-07-29

1999-06-29

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

73 137, G01P 904

Patent

active

059182806

ABSTRACT:
Angular rate sensor comprises a x-direction oscillator, a x-oscillation driver, a z-oscillation sensing element for detecting an angular rate and an additional z-oscillation driver for triggering a free damped oscillation of the oscillator in the z-direction. An electric sensing circuit energizes the z-oscillation driver for triggering the free damped oscillation and detects the frequency of the free damped oscillation. The frequency is the resonant frequency of the oscillator. Thereafter the electric sensing circuit energizes the x-oscillation driver with the detected frequency for detecting the angular rate.

REFERENCES:
patent: 5349855 (1994-09-01), Bernstein et al.
patent: 5780740 (1998-07-01), Lee et al.

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