发明名称 |
Method for resonance identification in hard disk drives |
摘要 |
A hard disk drive that redefines a notch filter of the drive. The update process may include initially disabling all notch filters and inducing a seek operation of the disk drive heads. A position error signal is read during a settling time of the seek operation and processed to determine the frequency of the signal. The frequency is selected as a resonant frequency if the error signal magnitude exceeds a threshold value. The notch filter is then redefined in accordance with the selected resonant frequency. The controller may also perform a routine to determine whether the resonant frequency is above or below a Nyquist frequency. Unlike prior art techniques, the method disclosed can obtain the resonant frequency without sweeping the excitation signal of the disk drive voice coil motor.
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申请公布号 |
US2006221492(A1) |
申请公布日期 |
2006.10.05 |
申请号 |
US20050096556 |
申请日期 |
2005.04.01 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
PARK CHEOL H.;CHU SANG H.;LEE YONG G. |
分类号 |
G11B5/596 |
主分类号 |
G11B5/596 |
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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