Controller, state estimator and methods for use therewith

Details Controller, state estimator and methods for use therewith Controller, state estimator and methods for use therewith

2006-06-21

2008-10-14

Feild, Joseph (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077040, C318S560000

Reexamination Certificate

active

07436617

ABSTRACT:
A controller is disclosed that can be used in controlling a drive device of a disk drive, or other systems, in the presence of sinusoidal disturbances. The controller includes a calibration module that generates a plurality of reference states for a reference region of a disk of the disk drive. An initialization state generation module generates a plurality of initialization states for at least one other region of the disk as a function of the plurality of reference states, a displacement between the other regions of the disk and the reference region of the disk, and a reference state transition matrix. A control module generates a control signal for the drive device based on the plurality of initialization states.

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