Support structure of vibrator

Abstract

Abstract PURPOSE:To prevent the suppression of a bending vibration of a vibrator by providing one support point only at three edge parts on the side of the vibrator. CONSTITUTION:A vibrator 12 performs a bending vibration by applying a drive signal to a piezo-electric element 18 for driving to generate a voltage in piezo-electric elements 14 and 16 for detection according to the vibration. An output while a vibration gyroscope 10 is not rotated can be reduced by measuring a difference of an output voltage from the elements 14 and 16. At this point, as three support members 20, 22 and 26 are connected to respective different edge parts of the vibrator 12, no force is applied in a direction of suppressing the bending vibration with the members 20, 22 and 26. Moreover, a length to a support point connected to the member 26 from the support base 24 is set to double a length to a connection point where the members 20 and 22 are connected from the support base 24. Thus, a ration of these lengths becomes equal to a ratio of displacement value at a support point near two node points during the bending vibration thereby enabling the vibrator 12 to vibrate freely.

Inventors

• 👤 Takeshi Nakamura
• 👤 武 中村

Bibliographic Details