Method and system for optimizing servo track writing motor...

Details Method and system for optimizing servo track writing motor... Method and system for optimizing servo track writing motor...

2006-11-07

2006-11-07

Wong, K. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S075000

Reexamination Certificate

active

07133244

ABSTRACT:
A method for reducing written-in high frequency repeatable run out track mis-registration of a hard disk is described. The method includes adjusting the excitation frequencies away from mechanical modes to provide desired rotating speed of a servo track writer. The mechanical modes are relative to said hard disk drive. The method further includes adjusting excitation levels to provide desired DC gain level associated with a motor controller of the servo track writer, wherein instances of the written-in high frequency repeatable run out track mis-registration are reduced.

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