Invention Grant
US08953278B1 Disk drive selecting disturbance signal for feed-forward compensation
有权
磁盘驱动器选择用于前馈补偿的干扰信号
- Patent Title: Disk drive selecting disturbance signal for feed-forward compensation
- Patent Title (中): 磁盘驱动器选择用于前馈补偿的干扰信号
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Application No.: US14253797Application Date: 2014-04-15
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Publication No.: US08953278B1Publication Date: 2015-02-10
- Inventor: Jianguo Zhou , Wei Xi , Kuang-Yang Tu , Alain Chahwan
- 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 disk, a head, and control circuitry comprising a servo control system operable to actuate the head over the disk. A plurality of disturbance signals is generated in response to a vibration. A plurality of correlations is generated in response to each disturbance signal and an error signal of the servo control system. At least one of the disturbance signals is selected in response to the correlations. A feed-forward compensation value is generated in response to the selected disturbance signal, and the feed-forward compensation value is applied to the servo control system to compensate for the vibration.
Information query
IPC分类: