| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a means for reducing an unevenness of a sensor sensitivity due to a change of sensitivity caused by a temperature change and an unevenness of a resonance frequency of a vibrator. <P>SOLUTION: A driving unit for a vibration type angular velocity sensor comprises: a drive force applying means for vibration-driving a vibration element; a drive displacement detecting means for detecting a displacement vibrated by receiving a force of the drive force applying means by the element; a drive signal generating means having an amplitude regulating means for controlling a drive signal output by the drive fore applying means base don a displacement signal detected by the drive displacement detecting means; and an angular velocity detecting means for detecting a displacement in the angular velocity detecting direction of the element by a Coriolis force. In this drive unit, the drive amplitude is controlled so that the ratio of the drive frequency of the element driven by the drive force applying means to the drive amplitude becomes constant. <P>COPYRIGHT: (C)2004,JPO |
