Vibration gyroscope

Details Vibration gyroscope Vibration gyroscope

1996-10-15

1998-12-15

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310316, 310366, 310367, 310359, 7351434, H01L 4108

Patent

active

058501193

ABSTRACT:
A vibration gyroscope 10 includes a vibrator 12. The vibrator 12 has a vibration member 14 formed in a regular triangular prism shape and piezoelectric elements 16a, 16b and 16c. Two of the piezoelectric elements 16a and 16b are polarized in the direction from the outside to the vibration member 14, and the other piezoelectric element 16c is polarized in the direction from the vibration member 14 to the outside. An oscillation circuit 28 sends signals to the piezoelectric elements 16a to 16c and a signal output from the vibration member 14 is fed back. Two of the piezoelectric elements 16a and 16b are connected to a differential circuit 30. The differential circuit 30 is connected to a synchronous detection circuit 32 and then connected to a smoothing circuit 34 and a DC amplifier 36 in series.

REFERENCES:
patent: 5117148 (1992-05-01), Nakamura et al.
patent: 5270607 (1993-12-01), Terajima
patent: 5336960 (1994-08-01), Shimizu et al.
patent: 5434467 (1995-07-01), Abe et al.
patent: 5569969 (1996-10-01), Kasanami et al.
patent: 5635786 (1997-06-01), Fujimoto et al.
patent: 5635787 (1997-06-01), Mori et al.
patent: 5648608 (1997-07-01), Nakamura

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