Vibratory gyroscope

Details Vibratory gyroscope Vibratory gyroscope

1997-02-11

1998-10-20

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

7350414, 73497, 310315, G01C 1900

Patent

active

058248994

ABSTRACT:
A vibrating gyroscope includes a vibrator having a triangular prism shaped vibrating body and piezoelectric elements. An oscillation circuit is connected between two piezoelectric elements and another piezoelectric element. Output signals from two piezoelectric elements are applied to input terminals of a differential circuit. The differential circuit is connected to a synchronous detecting circuit, and the synchronous detecting circuit is connected to a smoothing circuit. A temperature compensating capacitor is connected between two piezoelectric elements that are connected to the differential circuit. The oscillation circuit consists of an amplifier and a phase shifter having a resistor and a capacitor. As the capacitor used in the phase shifter, the temperature compensating capacitor may be used.

REFERENCES:
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patent: 4109456 (1978-08-01), Yamada et al.
patent: 4195326 (1980-03-01), Ruegg et al.
patent: 4694696 (1987-09-01), Hojo et al.
patent: 5088326 (1992-02-01), Wada et al.
patent: 5117148 (1992-05-01), Nakamura et al.
patent: 5220833 (1993-06-01), Nakamura

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