发明授权
- 专利标题: Method and system to monitor magnetic head loading and unloading stability for a data storage system
- 专利标题(中): 监控数据存储系统磁头加载和卸载稳定性的方法和系统
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申请号: US14303955申请日: 2014-06-13
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公开(公告)号: US09401165B1公开(公告)日: 2016-07-26
- 发明人: Jifang Tian , Alain Chahwan
- 申请人: Western Digital Technologies, Inc.
- 申请人地址: US CA Irvine
- 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 Irvine
- 主分类号: G11B27/36
- IPC分类号: G11B27/36 ; G11B21/02 ; G11B5/55
摘要:
A method and system to monitor stability of magnetic head loading and unloading beside media for a data storage system is described. A shock sensor is utilized to detect shock during preloading of a magnetic head beside recording media, during loading of a magnetic head beside recording media, during pre-unloading of a magnetic head from the recording media, and/or during unloading of a magnetic head from the recording media. In an aspect, a desired pitch static attitude (PSA) and roll static attitude (RSA) of a slider is determined. In an aspect, the stability of a magnetic head is assessed and screened while on the fly and during head gimbal assembly (HGA) design and testing to improve overall data storage device reliability.
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