Invention Grant
US08947822B1 Disk drive adjusting fly height based on air density measured from rate of temperature change
有权
基于空气密度的磁盘驱动器调整飞行高度，根据温度变化率测量
- Patent Title: Disk drive adjusting fly height based on air density measured from rate of temperature change
- Patent Title (中): 基于空气密度的磁盘驱动器调整飞行高度，根据温度变化率测量
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Application No.: US12478606Application Date: 2009-06-04
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Publication No.: US08947822B1Publication Date: 2015-02-03
- Inventor: Alan P. Rice , Timothy A. Ferris
- Applicant: Alan P. Rice , Timothy A. Ferris
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: G11B21/02
- IPC: G11B21/02
Abstract:
A disk drive is disclosed comprising a head actuated over a disk, wherein the head comprises a dynamic fly height (DFH) actuator. The disk drive further comprises an electrical heating element, and control circuitry operable to select an operating control signal applied to the DFH actuator by heating the electrical heating element for a first heating time, measuring a rate of temperature change of the electrical heating element, and selecting the operating control signal applied to the DFH actuator in response to the rate of temperature change.
Information query
