发明申请
US20110068718A1 VIBRATION-TYPE MOTOR CONTROLLER AND OPTICAL APPARATUS 有权
振动式电机控制器和光学装置

  • 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
  • 申请号: US12880769
    申请日: 2010-09-13
  • 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
VIBRATION-TYPE MOTOR CONTROLLER AND OPTICAL APPARATUS
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.
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