发明授权
- 专利标题： Voice-coil motor control with zero-current sensing
- 专利标题（中）： 具有零电流检测功能的音圈电机控制
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申请号： US12572139申请日： 2009-10-01
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公开(公告)号： US07923954B1公开(公告)日： 2011-04-12
- 发明人: Siew Yong Chui , Jye Sheng Hong
- 申请人： Siew Yong Chui , Jye Sheng Hong
- 申请人地址： BM Hamilton
- 专利权人： Marvell International Ltd.
- 当前专利权人： Marvell International Ltd.
- 当前专利权人地址： BM Hamilton
- 主分类号： H02P6/00
- IPC分类号： H02P6/00
摘要：
A circuit for controlling a voice-coil motor (VCM) may incorporate a pulse-width modulation driver to drive the VCM, a zero-current detector to determine whether the current across the VCM is zero, and a Back-EMF voltage detector to measure the voltage across the VCM when the current across the VCM is determined to be zero. The circuit may determine the current velocity of the VCM and use this information to control the velocity of the VCM.
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