Magnetic disk device and head-position control method

Details Magnetic disk device and head-position control method Magnetic disk device and head-position control method

2007-03-19

2009-12-22

DeCady, Albert (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Optimization or adaptive control

C360S078040, C360S078060, C360S078070, C360S078090

Reexamination Certificate

active

07636605

ABSTRACT:
A feedback controller performs a feedback control based on an error between a target position and an actual position of a head. A model controller obtains a control command, a model position to be output as a command for the target position to the feedback controller, and a model velocity for the head to follow a target velocity, by using a preset control equation model, and obtains the control command and the model position with the target position as an input, based on a differential value of the target velocity corresponding to a remaining distance from the model position to the target position.

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Japanese Office action mailed Sep. 30, 2008 corresponding to U.S. Appl. No. 11/687,706, filed Mar. 19, 2007.

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