| 摘要 |
PURPOSE:To suppress a leak voltage low and to detect accurate, stable Coriolis force by providing torsion type piezoelectric elements which generate outputs proportional to the extent of torsion at the center part of an H type vibrator as piezoelectric elements for detection or driving. CONSTITUTION:When an AC voltage is applied to the piezoelectric vibrators 11 for driving, the upper and lower piezoelectric elements 11 for driving are opposite in polarity, so the vibrator vibrate in horizontally symmetrical and vertically asymmetrical vibration mode. When a Z-axial angular velocity is applied to the vibrator 10 which vibrates in this vibration mode, the vibrator 10 generates X-axial Coriolis force at right angles to the vibrating direction of the driving side. When this center part is twisted, a voltage proportional to the extent of the torsion is generated in the torsion type piezoelectric element 12 and the Coriolis force is detected, thereby detecting the angular velocity applied to the vibration gyroscope from the Coriolis force. |
