发明授权
- 专利标题: Driving apparatus for vibration type actuator apparatus
- 专利标题(中): 振动式致动器装置的驱动装置
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申请号: US09207917申请日: 1998-12-09
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公开(公告)号: US06313564B1公开(公告)日: 2001-11-06
- 发明人: Kenichi Kataoka , Shinji Yamamoto , Tadashi Hayashi , Jun Ito
- 申请人: Kenichi Kataoka , Shinji Yamamoto , Tadashi Hayashi , Jun Ito
- 优先权: JP9-343453 19971212
- 主分类号: H02N200
- IPC分类号: H02N200
摘要:
A driving apparatus is provided with an evaluating device for evaluating a wear state in a friction surface between a vibration member and a movable member in a vibration type actuator apparatus. The evaluating device accurately and automatically evaluating the wear state of the friction surface by detecting a fluctuation amount of a driving speed under driving conditions of the vibration type actuator apparatus selected so as to achieve a fixed speed.
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