发明授权
- 专利标题: Data storage device filtering sensor signal to optimize shock and thermal pop detection
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申请号: US15246364申请日: 2016-08-24
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公开(公告)号: US09747936B1公开(公告)日: 2017-08-29
- 发明人: Erik J. Eklund
- 申请人: Western Digital Technologies, Inc.
- 申请人地址: US CA San Jose
- 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 San Jose
- 主分类号: G11B5/55
- IPC分类号: G11B5/55 ; G11B5/596 ; G11B19/04
摘要:
A data storage device is disclosed comprising a head actuated over a disk, and a sensor configured to generate a sensor signal representing at least one of a shock and a thermal popping affecting the data storage device. The sensor signal is first filtered based on a first frequency range corresponding to the shock to generate a shock signal, and second filtered based on a second frequency range corresponding to the thermal popping to generate a pop signal, wherein the second frequency range is different from the first frequency range. The shock signal and the pop signal are individually processed, for example, to log a disturbance event, to abort a write operation, or to generate a feed-forward servo compensation signal.
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