发明申请
US20080007271A1 METHODS AND APPARATUSES FOR MEASURING VCM BEMF AT A VCM CONTROL UPDATE RATE
有权
用于在VCM控制更新速率下测量VCM BEMF的方法和装置
- 专利标题： METHODS AND APPARATUSES FOR MEASURING VCM BEMF AT A VCM CONTROL UPDATE RATE
- 专利标题（中）： 用于在VCM控制更新速率下测量VCM BEMF的方法和装置
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申请号： US11750839申请日： 2007-05-18
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公开(公告)号： US20080007271A1公开(公告)日： 2008-01-10
- 发明人: Craig Smith , Stan Shepherd , Xin Yang , Yu Sun
- 申请人： Craig Smith , Stan Shepherd , Xin Yang , Yu Sun
- 专利权人： Maxtor Corporation
- 当前专利权人： Maxtor Corporation
- 主分类号： G01R35/00
- IPC分类号： G01R35/00 ; G01R27/02
摘要：
Devices and methods for performing dynamic sampling of a back electromotive force (BEMF) measurement are provided. A device has hardware, including a voice coil motor (VCM) for receiving a VCM command signal and a correction circuit, for obtaining the VCM command signal and a coil voltage measurement from the hardware, where the correction circuit removes a transient voltage measurement due to a change in the VCM command signal from the coil voltage measurement and outputs an estimated BEMF measurement.
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