| 摘要 |
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.
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