发明授权
US06972924B1 Disk drive attenuating excitation of arm vibration mode by simultaneously driving secondary actuator for non-active head
失效
磁盘驱动器通过同时驱动非活动头的辅助执行器来衰减臂振动模式的激励
- 专利标题： Disk drive attenuating excitation of arm vibration mode by simultaneously driving secondary actuator for non-active head
- 专利标题（中）： 磁盘驱动器通过同时驱动非活动头的辅助执行器来衰减臂振动模式的激励
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申请号： US10816997申请日： 2004-04-02
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公开(公告)号： US06972924B1公开(公告)日： 2005-12-06
- 发明人: Yih-Jen Dennis Chen , Jiasheng Zhu , Robert J. McNab
- 申请人： Yih-Jen Dennis Chen , Jiasheng Zhu , Robert J. McNab
- 申请人地址： US CA Lake Forest
- 专利权人： Western Digital Technologies, Inc.
- 当前专利权人： Western Digital Technologies, Inc.
- 当前专利权人地址： US CA Lake Forest
- 代理商 Howard H. Sheerin, Esq.
- 主分类号： G11B5/48
- IPC分类号： G11B5/48 ; G11B5/55 ; G11B5/596
摘要：
A disk drive is disclosed employing a primary actuator for rotating an actuator arm about a pivot in coarse movements, and first and second secondary actuators coupled to the actuator arm for actuating first and second heads in fine movements. A servo control system generates a first control signal applied to the first secondary actuator to position the first head over the first disk surface in fine movements while accessing the first disk surface. The servo control system phase shifts the first control signal by a predetermined phase to generate a second control signal applied to the second secondary actuator to attenuate excitation of at least one arm vibration mode.