发明名称 |
Real-time automatic loop-shaping for a disc drive servo control system |
摘要 |
An apparatus and method for improving servo loop performance in a disc drive storage system are provided. The servo loop includes a voice coil motor actuator that moves the head in response to a received servo control signal. A sensor, located in the head, senses servo information located on the disc and produces a servo signal therefrom. The servo signal is combined with a reference signal to produce a position error signal. A servo controller receives the position error signal and responsively produces the servo control signal. The servo controller includes a drive signal generator that receives the position error signal and responsively produces a driving energy signal. A vibration damping circuit receives the driving energy signal and responsively produces the servo control signal. A real-time adaptive loop shaping circuit, included in the servo loop, detects vibrations in the position error signal and responsively adjusts at least one parameter of a transfer function of the vibration damping circuit to reduce vibrations at different frequencies in the driving energy signal.
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申请公布号 |
US2002093754(A1) |
申请公布日期 |
2002.07.18 |
申请号 |
US20010896895 |
申请日期 |
2001.06.29 |
申请人 |
ZHANG TAO;GOMEZ KEVIN ARTHUR;BI QIANG;DING MINGZHONG;KUAN STEPHEN KOW CHIEW |
发明人 |
ZHANG TAO;GOMEZ KEVIN ARTHUR;BI QIANG;DING MINGZHONG;KUAN STEPHEN KOW CHIEW |
分类号 |
G11B5/596;G11B21/21;(IPC1-7):G11B5/596;G11B21/02 |
主分类号 |
G11B5/596 |
代理机构 |
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