Repeatable runout compensation in a disc drive

Details Repeatable runout compensation in a disc drive Repeatable runout compensation in a disc drive

2005-01-25

2005-01-25

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077010, C360S078090

Reexamination Certificate

active

06847503

ABSTRACT:
A system and method for correcting repeatable runout errors during manufacture of a disc drive. The system includes a Kalman filter having a recursive learning gain input and includes a recursive learning Again-setting circuit coupled to the recursive learning gain input. The recursive learning gain is initially set based on an estimate of a ratio of non-repeatable run out error to an estimate of the repeatable run out error. On subsequent recursions, the recursive learning gain-setting is reduced.

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