Method and apparatus for head positioning control with...

Details Method and apparatus for head positioning control with... Method and apparatus for head positioning control with...

2007-01-02

2007-01-02

Wong, K. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S078040, C360S078070

Reexamination Certificate

active

11088855

ABSTRACT:
A head positioning control system which is applied to a disk drive is disclosed. The system includes a feedback control system which performs head positioning control of a head and a feedforward control system. The feedforward control system detects the amplitude and phase of a disturbance based on the position error between the position of the head and a target position. The feedforward control system computes a disturbance compensation value for eliminating the disturbance to output the disturbance compensation value to the feedback control system based on each detection result of the amplitude and the phase.

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Australian Search Report dated Feb. 1, 2006 for Appln. No. 200502198-5.

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