Invention Grant
US08605384B1 Disk drive performing lifetime logging of microactuator sensitivity
有权
磁盘驱动器执行微致动器灵敏度的生命周期记录
- Patent Title: Disk drive performing lifetime logging of microactuator sensitivity
- Patent Title (中): 磁盘驱动器执行微致动器灵敏度的生命周期记录
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Application No.: US13670388Application Date: 2012-11-06
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Publication No.: US08605384B1Publication Date: 2013-12-10
- Inventor: Yanning Liu , Chuanwen Ji , Duc T. Phan , Ming Ying Wang
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: G11B5/596
- IPC: G11B5/596
Abstract:
A disk drive is disclosed comprising a head, a disk surface, and a voice coil motor (VCM) and a microactuator operable to actuate the head over the disk surface. A sensitivity of the microactuator is periodically measured over a lifetime of the microactuator. Each measured sensitivity is stored in a timeline log, wherein the timeline log represents a degradation curve of the microactuator over the lifetime of the microactuator.
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