发明名称 |
Method and system for optimizing servo track writing motor current profile to reduce written-in high-frequency repeatable runout track mis-registration |
摘要 |
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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申请公布号 |
US7133244(B1) |
申请公布日期 |
2006.11.07 |
申请号 |
US20050203487 |
申请日期 |
2005.08.12 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
CHANG JEN-YUAN;GIMENEZ CHRISTOPHER A.;HARSHBERGER, JR. ROBERT P.;SHEN JR-YI |
分类号 |
G11B5/596 |
主分类号 |
G11B5/596 |
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