Method, medium, and apparatus compensating for torque...

Details Method, medium, and apparatus compensating for torque... Method, medium, and apparatus compensating for torque...

2005-07-22

2008-03-11

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S075000

Reexamination Certificate

active

07342739

ABSTRACT:
A method, medium, and apparatus controlling a hard disk drive, and particularly, embodiments include methods, media, and apparatuses compensating for torque variations with respect to temperature variations in a seek servo operation, compensating for differences between modeling torque constants, used for servo designing, and actual torque constants. The method includes controlling gain of a seek control loop to vary depending on a torque constant temperature compensation value corresponding to a measured temperature of the hard disk drive, the seek control loop generating a seek driving current to be applied to a voice coil in the seek mode.

REFERENCES:
patent: 5898286 (1999-04-01), Clare et al.
patent: 6342985 (2002-01-01), Clare et al.
patent: 6903897 (2005-06-01), Wang et al.
patent: 2002-367307 (2002-12-01), None
patent: 2003-323790 (2003-11-01), None
patent: 1998-069983 (1998-10-01), None
Korean Office Action with English-language translation, Jan. 26, 2006.

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