| 摘要 |
PURPOSE:To obtain a vibration gyro whose drift can be suppressed and whose adjustment can be simplified. CONSTITUTION:A vibrator 12 which is composed of a pillar-shaped vibrating body 14 and of piezoelectric elements 16a, 16b, 16c is included. In order to bend and vibrate the vibrating body 14, an oscillating circuit 28 and a phase correction circuit 30 are connected across the piezoelectric elements 16a, 16b. In synchronizing-signal generation circuits 38, 58, signals which are synchronized respectively with the piezoelectric elements 16a, 16b are generated. The signals are input to FETs 36, 56 as synchronous detection circuits. Output signals from the piezoelectric elements 16a, 16b are detected by using the FETs 36, 56 so as to be synchronized with output signals from the synchronizing-signal generation circuits 38, 58. The signals which have been synchronously detected are input to smoothing circuits 50, 70, and output signals from the smoothing circuits 50, 70 are input to a differential circuit 72. |
