Vibrating gyroscope including a pair of piezoelectric bodies wit

Details Vibrating gyroscope including a pair of piezoelectric bodies wit Vibrating gyroscope including a pair of piezoelectric bodies wit

1998-02-19

2000-05-09

Kwok, Helen C.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

7350414, 310316, G01P 900, H01L 4108

Patent

active

060587776

ABSTRACT:
A vibrating gyroscope includes a vibrating unit and a driving unit for driving the vibrating unit. The vibrating unit includes at least a pair of piezoelectric bodies stacked and polarized in a stacked direction thereof such that polarizing directions of the piezoelectric bodies are opposed to each other. An interface between the piezoelectric bodies is electrically floating with respect to a reference potential. The driving circuit receives at least one feedback signal from the vibrating unit and outputs to the vibrating unit a driving signal which has substantially the same phase as the feedback signal.

REFERENCES:
patent: 5430342 (1995-07-01), Watson
patent: 5635786 (1997-06-01), Fujimoto et al.
patent: 5765046 (1998-06-01), Watanabe
patent: 5794080 (1998-08-01), Watanabe

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