Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1995-03-22
1997-07-15
Williams, Hezron E.
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
7350414, 310316, G01C 1900, G01P 900, G01P 344, H01L 4100
Patent
active
056486081
ABSTRACT:
A vibrating gyroscope 10 includes a vibrator 12 including a regular triangular prism-shaped vibrating body 14 and piezoelectric elements 16a, 16b and 16c. Bending vibration of the vibrating body 14 occurs due to the operation of an oscillation circuit 32 including an amplifying circuit 34 and a phase correction circuit 36. The piezoelectric elements 16a and 16b are connected with first and second switching circuits 40 and 46 via detection circuits 38 and 44. Control signals having phases opposite to each other are supplied to the first and second switching circuits 40 and 46 by using an inverting circuit 50. The first and second switching circuits 40 and 46 are alternately intermittently operated by receiving the control signals. Output signals of the first and second switching circuits 40 and 46 are smoothed by a smoothing circuit 52 and amplified by an amplifying circuit 54.
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patent: 5355034 (1994-10-01), Nakamura et al.
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patent: 5473288 (1995-12-01), Kumada
patent: 5495759 (1996-03-01), Nakamura
patent: 5505085 (1996-04-01), Kasanami et al.
Moller Richard A.
Murata Manufacturing Co. Ltd.
Williams Hezron E.
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