发明申请
- 专利标题: VIBRATION-TYPE MOTOR CONTROLLER AND OPTICAL APPARATUS
- 专利标题(中): 振动式电机控制器和光学装置
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申请号: US12880769申请日: 2010-09-13
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公开(公告)号: US20110068718A1公开(公告)日: 2011-03-24
- 发明人: Junichi Murakami
- 申请人: Junichi Murakami
- 申请人地址: JP Tokyo
- 专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人地址: JP Tokyo
- 优先权: JP2009-216607 20090918
- 主分类号: H02N2/14
- IPC分类号: H02N2/14
摘要:
A vibration-type motor controller controls a driving speed of a vibration-type motor relatively moving a vibrating body in which a vibration is excited by an electromechanical energy conversion element 20 to which a first frequency signal and a second frequency signal having a phase difference are applied, and a contacting body which contacts the vibrating body. The vibration-type motor controller includes a speed controller 1 configured to alternately switch a frequency control which changes frequencies of the first and second frequency signals while fixing the phase difference and a phase difference control which changes the phase difference while fixing the frequency so that at least one of a plurality of frequency controls or a plurality of phase difference controls are included to increase and decrease the driving speed of the vibration-type motor.
公开/授权文献
- US08558488B2 Vibration-type motor controller and optical apparatus 公开/授权日:2013-10-15
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