发明授权
US07692888B2 Apparatus, system, and method for detection of fly height margin using controlled excitation of air bearing mode
有权
使用空气轴承模式的受控激励来检测飞行高度裕度的装置，系统和方法
- 专利标题： Apparatus, system, and method for detection of fly height margin using controlled excitation of air bearing mode
- 专利标题（中）： 使用空气轴承模式的受控激励来检测飞行高度裕度的装置，系统和方法
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申请号： US11609811申请日： 2006-12-12
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公开(公告)号： US07692888B2公开(公告)日： 2010-04-06
- 发明人: Shanlin Duan , Jizhong He , John Stephen Hopkins
- 申请人： Shanlin Duan , Jizhong He , John Stephen Hopkins
- 申请人地址： NL Amsterdam
- 专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人地址： NL Amsterdam
- 代理机构： Kunzler Needham Massay & Thorpe
- 主分类号： G11B21/02
- IPC分类号： G11B21/02
摘要：
An apparatus, system, and method are disclosed for fly height detection. The apparatus includes an actuator configured to induce vibrations in a glide head that is configured to detect physical asperities on a disk surface. The apparatus may also include a second end of the suspension arm coupled with the glide head and a sensor module that is configured to communicate with a control module in response to the glide head coming in contact with at least one physical asperity. The system includes the apparatus, a disk having a surface comprising physical asperities, and a head gimbal assembly configured to calibrate a fly height margin for the disk. The method includes inducing vibrations in a glide head, detecting physical asperities on a disk surface, and communicating with a control module in response to the glide head coming in contact with at least one physical asperity.
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