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APPARATUS, SYSTEM, AND METHOD FOR DETECTION OF FLY HEIGHT MARGIN USING CONTROLLED EXCITATION OF AIR BEARING MODE
APPARATUS, SYSTEM, AND METHOD FOR DETECTION OF FLY HEIGHT MARGIN USING CONTROLLED EXCITATION OF AIR BEARING MODE
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机译:利用空气轴承模式的受控激励来检测飞行高度边际的装置,系统和方法
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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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