Vibratory gyroscope with reduced stress and stable characteristi

Details Vibratory gyroscope with reduced stress and stable characteristi Vibratory gyroscope with reduced stress and stable characteristi

1995-02-17

1997-06-03

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

310351, G01P 904

Patent

active

056356412

ABSTRACT:
A vibratory gyroscope includes, for example, a triangular columnar vibrating body formed with a non-metallic material. On three side faces of the vibrating body, patterned electrodes extending to the vicinity of one nodal point from the center portion are formed. One electrodes of piezoelectric elements are bonded to the patterned electrodes. The vibrating body has a larger Q than the piezoelectric element and a thermal expansion coefficient approximate to the piezoelectric element. Patterned electrodes are formed to the vicinity of the other nodal point of the vibrating body from the other electrodes of the piezoelectric elements. Support members formed with a conductive material are fixed to the patterned electrodes formed on two side faces of the vibrating body in the vicinity of the nodal points of the vibrating body. The support members are connected electrically to the patterned electrodes. Lead wires are connected to the patterned electrodes formed on another side face of the vibrating body in the vicinity of the nodal points of the vibrating body.

REFERENCES:
patent: 3590287 (1971-06-01), Berlincourt et al.
patent: 4454444 (1984-06-01), Fujiwara et al.
patent: 4511821 (1985-04-01), Nakamura et al.
patent: 4635009 (1987-01-01), Ebata
patent: 4674331 (1987-06-01), Watson
patent: 4836023 (1989-06-01), Oikawa
patent: 4898031 (1990-02-01), Oikawa et al.
patent: 5014554 (1991-05-01), Terada et al.
patent: 5220833 (1993-06-01), Nakamura
patent: 5226324 (1993-07-01), Oikawa et al.

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