Invention Grant
US08830617B1 Disk drive adjusting state estimator to compensate for unreliable servo data
有权
磁盘驱动器调整状态估计器来补偿不可靠的伺服数据
- Patent Title: Disk drive adjusting state estimator to compensate for unreliable servo data
- Patent Title (中): 磁盘驱动器调整状态估计器来补偿不可靠的伺服数据
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Application No.: US13925798Application Date: 2013-06-24
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Publication No.: US08830617B1Publication Date: 2014-09-09
- Inventor: Aswartha Narayana , Yanan Huang
- 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: G11B5/55
- IPC: G11B5/55
Abstract:
A disk drive is disclosed comprising a disk comprising tracks defined by servo sectors, a head, and control circuitry comprising a servo control system operable to actuate the head over the disk based on the servo sectors. An estimated acceleration EstAccel of the head over the disk is generated based on at least one of the servo sectors. When the EstAccel is determined to be reliable, an estimated velocity EstVel of the head over the disk is generated based on the EstAccel. When the EstAccel is determined to be unreliable, the EstAccel is adjusted to generate an adjusted acceleration AdjAccel and the EstVel of the head over the disk is generated based on the AdjAccel.
Information query
IPC分类:
