Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1991-08-26
1993-06-22
Chapman, John E.
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
310316, G01P 904
Patent
active
052208338
ABSTRACT:
A detecting circuit according to the present invention is for detecting output of a vibrating gyroscope including a prism-shaped vibrator and piezoelectric elements formed on, at least, two side faces of the vibrator. The detecting circuit comprises an exciting signal generating circuit for exciting the vibrator by inputting the signal to the two piezoelectric elements of the vibrating gyroscope. The vibrating gyroscope bends and vibrates in response to the signal from the exciting signal generating circuit. A difference between the outputs of the two piezoelectric elements of the vibrating gyroscope is detected by a differential circuit. The output signal from the differential circuit is subjected to synchronous detection by a synchronous detecting circuit. Furthermore, when necessary, a phase adjusting circuit for adjusting phase of the output signal from the differential circuit is connected to the synchronous detecting circuit.
REFERENCES:
patent: 3520195 (1970-07-01), Tehon
Chapman John E.
Murata Manufacturing Co. Ltd.
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