发明名称 |
Disk drive detecting touchdown event by evaluating frequency response of a touchdown metric |
摘要 |
A disk drive is disclosed comprising a head actuated over a disk, and a fly height actuator operable to control a fly height of the head over the disk. A periodic control signal is applied to the fly height actuator, a frequency response of a touchdown metric at a frequency of the periodic control signal is measured, and a touchdown event is detected in response to the frequency response of the touchdown metric. |
申请公布号 |
US8699173(B1) |
申请公布日期 |
2014.04.15 |
申请号 |
US201113224118 |
申请日期 |
2011.09.01 |
申请人 |
KANG SOO-CHOON;ZHAO HONGCHAO T.;WEERASOORIYA SIRI S.;WESTERN DIGITAL TECHNOLOGIES, INC. |
发明人 |
KANG SOO-CHOON;ZHAO HONGCHAO T.;WEERASOORIYA SIRI S. |
分类号 |
G11B21/02 |
主分类号 |
G11B21/02 |
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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