Algorithm for DSA/microactuator total loop gain calibration

Details Algorithm for DSA/microactuator total loop gain calibration Algorithm for DSA/microactuator total loop gain calibration

2007-09-04

2007-09-04

Tzeng, Fred F. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

11376793

ABSTRACT:
A hard disk drive that includes a voice coil motor and a micro-actuator. The disk drive includes a servo with a voice coil motor loop, a micro-actuator loop and an overall loop. The servo is calibrated by first calibrating the voice coil motor loop, then calibrating the micro-actuator loop and finally calibrating the overall loop.

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patent: 6577975 (2003-06-01), Chiesa
patent: 7075748 (2006-07-01), White et al.
patent: 7219840 (2007-05-01), Hanks
patent: 2002/0149873 (2002-10-01), Schillaci et al.
patent: 2006/0109538 (2006-05-01), Mushika et al.

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