Invention Grant
US09001454B1 Disk drive adjusting phase of adaptive feed-forward controller when reconfiguring servo loop
有权
重新配置伺服回路时，自适应前馈控制器的磁盘驱动调整阶段
- Patent Title: Disk drive adjusting phase of adaptive feed-forward controller when reconfiguring servo loop
- Patent Title (中): 重新配置伺服回路时，自适应前馈控制器的磁盘驱动调整阶段
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Application No.: US13862320Application Date: 2013-04-12
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Publication No.: US09001454B1Publication Date: 2015-04-07
- Inventor: Young-Hoon Kim , Wei Xi
- Applicant: Western Digital Technologies, Inc.
- Main IPC: G11B5/596
- IPC: G11B5/596 ; G11B21/10
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 in response to the servo sectors. The servo control system is configured into a first state, and a position error signal (PES) representing a difference between a target location for the head and a measured location for the head is generated. An actuator control signal is generated in response to the PES, a feed-forward control signal is adapted in response to the servo sectors, and the actuator control signal is adjusted using the feed-forward control signal. The servo control system is configured from the first state to a second state, and a phase of the adaptation of the feed-forward control signal is adjusted based on the second state.
Information query
IPC分类:
