发明申请
- 专利标题: DRIVE UNIT
- 专利标题(中): 驱动单元
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申请号: US12114861申请日: 2008-05-05
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公开(公告)号: US20080278032A1公开(公告)日: 2008-11-13
- 发明人: Yusuke ADACHI , Hideaki Mukae , Masaru Higashionji , Eiichi Nagaoka , Kenichi Honjo
- 申请人: Yusuke ADACHI , Hideaki Mukae , Masaru Higashionji , Eiichi Nagaoka , Kenichi Honjo
- 优先权: JP2007-122284 20070507
- 主分类号: H02N2/06
- IPC分类号: H02N2/06
摘要:
A vibratory actuator includes a piezoelectric element, a driver element provided on the piezoelectric element and a movable body supported by the driver element. A control unit supplies a first voltage and a second voltage at the same frequency to the piezoelectric element. By supplying the first voltage and the second voltage having a difference phase from a phase of the first voltage by 90°, the piezoelectric element is lead to composite vibration of stretching and bending, thereby causing the driver to make an elliptical motion by the vibration and move the movable body. The control unit switches, during a fine mode, a phase difference between the first voltage and the second voltage between 90° and 0°.
公开/授权文献
- US07960895B2 Drive unit 公开/授权日:2011-06-14
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