To provide a driving detection circuit of a vibration gyro wherein miniaturization is realized by optimizing sensitivity of the vibration gyro.
A resistance value of a load resistance is selected so as to have a value in the vicinity of a point where driving detection efficiency becomes maximum. The driving detection efficiency is obtained by a method wherein driving efficiency of a piezoelectric vibrator which is regulated on the basis of a signal which is applied from a self oscillation circuit 105 to an internal resistance of a piezoelectric vibrator 101 via load resistances 104 is multiplied by detecting efficiency of the piezoelectric vibrator which is regulated on the basis of a signal which is detected by parallel resistances of the internal resistance of the piezoelectric vibrator and the load resistances via electrostatic capacity between driving detection electrodes 102 and a common electrode 103 of the piezoelectric vibrator.
| JP2547910 | VIBRATION GYRO |
| JP3232791 | VIBRATION GYROSCOPE |
| JP4023889 | Posture angle detector |
OOTSUCHI TETSUO
KOIKE TAKAFUMI
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