Vibratory gyroscope, vibrator used in this gyroscope, method for analyzing vibration of the vibrator, method for supporting the vibrator, and method for manufacturing the vibratory gyroscope

摘要

A vibratory gyroscope for detecting a turning angular rate of rotation applied to a vibrator, which vibratory gyroscope has the vibrator provided with a plurality of vibration pieces and a base part having the plurality of vibration pieces connected with it and is composed so as to obtain the turning angular rate on the basis of a detecting vibration excited in the vibrator according to the turning angular rate when giving a driving vibration to at least one of the vibration pieces, and makes the vibrator being supported in a domain where the detecting vibration is smallest in said vibrator, said domain being in the vicinity of the center of gravity of the vibrator. It is preferable that the vibrator is supported in the vicinity of the center of gravity of a driving vibration of the vibrator and a supporting hole is provided in a domain where the detecting vibration is smallest in a state where no supporting hole is provided in the vibrator and the vibrator is supported on or near the inner wall face of this supporting hole.