Method and apparatus for head positioning control in a disk...

Details Method and apparatus for head positioning control in a disk... Method and apparatus for head positioning control in a disk...

2005-08-23

2005-08-23

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

06934116

ABSTRACT:
There is disclosed a head positioning control system including a feedforward (FF) control system to compensate a disturbance in a disk drive. This system includes an identification unit which executes parameter identification processing to determine a transfer function of the FF controller as well as a control operation. This identification unit updates a transfer characteristic of the FF controller so as to be adapted to a disturbance fluctuation.

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