发明名称 |
Seek distance dependent variable max VCM seek current to control thermal rise in VCM's |
摘要 |
A disk drive and methods for preventing a coil in a voice coil motor from overheating due to the application of excess current. The disk drive comprises a servo control system. The servo control system is adapted for applying a current to a coil of the voice coil motor thereby causing the voice coil motor to move the head according to a seek distance. The servo control system generates a plurality of seek profiles for each of a plurality of seek distances and a plurality of current limits for the plurality of seek profiles. Each of the plurality of seek profiles defines a plan for controlling the current to be applied to the coil while the voice coil motor is operated over the seek distance. The plurality of current limits each define a maximum current allowed while controlling the current to be applied to the coil.
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申请公布号 |
US6724564(B1) |
申请公布日期 |
2004.04.20 |
申请号 |
US20000728630 |
申请日期 |
2000.11.30 |
申请人 |
WESTERN DIGITAL TECHNOLOGIES, INC. |
发明人 |
CODILIAN RAFFI;NGUYEN DAVID D. T.;WHITAKER DAVID L. |
分类号 |
G11B5/55;G11B5/596;(IPC1-7):G11B5/596 |
主分类号 |
G11B5/55 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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