Vibrating gyroscope

Details Vibrating gyroscope Vibrating gyroscope

1995-05-17

1996-07-09

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

G01P 1514

Patent

active

055333966

ABSTRACT:
A vibrating gyroscope 10 includes a piezoelectric vibrator 12. Between a feedback piezoelectric element 16c and driving and detecting piezoelectric elements 16a and 16b of the piezoelectric vibrator 12, an amplifier circuit 24, a level changing circuit 26, a frequency dividing circuit 28, a phase correcting circuit 30, resistors 32a and 32b are connected. The piezoelectric elements 16a and 16b are connected to a non-inverting input terminal and an inverting input terminal of a first differential amplifier circuit 34. An output terminal of the first differential amplifier circuit 34 is connected to input terminals of a first and a second detecting circuits 36a and 36b. To other input terminals of the first and the second detecting circuits 36a and 36b, an output terminal of the amplifier circuit 24, a non-inverting output terminal and an inverting output terminal of the frequency dividing circuit 28 are connected. To the post-stages of the first and the second detecting circuits 36a and 36b, a first and a second smoothing circuits 38a and 38b, and a second and a third differential amplifier circuits 40 and 42 are connected.

REFERENCES:
patent: 5220833 (1993-06-01), Nakamura
patent: 5375336 (1994-12-01), Nakamura
patent: 5412204 (1995-05-01), Nakamura

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