Piezoelectric gyro element and piezoelectric gyroscope

Details Piezoelectric gyro element and piezoelectric gyroscope Piezoelectric gyro element and piezoelectric gyroscope

2008-03-25

2008-03-25

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S365000

Reexamination Certificate

active

07348716

ABSTRACT:
A piezoelectric gyro element including: a piezoelectric vibration body, which has a shape of a rectangular column with a rectangular section, the piezoelectric vibration body being fixed on one end; first driving electrodes formed on opposing first side faces of the piezoelectric vibration body; second and third driving electrodes formed separated from each other in the width direction of opposing second side faces of the piezoelectric vibration body; first detecting electrodes formed on the opposing first side faces of the piezoelectric vibration body; and second detecting electrodes formed on the opposing second side faces of the piezoelectric vibration body; wherein the piezoelectric vibration body is made to oscillate so that one end thereof rotates in a circular path, by applying driving currents with phase differentials to each of the driving electrodes; and a bend of the piezoelectric vibration body, the bend being generated by a torque operating orthogonally to a rotational central axis of the oscillation, being output as information from the detecting electrodes.

REFERENCES:
patent: 5386726 (1995-02-01), Terajima
patent: 5420548 (1995-05-01), Nakajima
patent: 6561829 (2003-05-01), Maeda et al.
patent: 7134336 (2006-11-01), Mase et al.
patent: 07-092175 (1995-04-01), None
patent: 08-271256 (1996-10-01), None

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