Head position control method and disk storage device

Details Head position control method and disk storage device Head position control method and disk storage device

2005-03-08

2005-03-08

Sniezek, Andrew L. (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S063000, C360S078040

Reexamination Certificate

active

06865051

ABSTRACT:
A disk device has eccentric misalignment between a plurality of disk surfaces. In order to prevent transient phenomena due to differences in the eccentric trajectories during head switching, a head position control method performs feed forward control for a plurality of disk surfaces by application of the eccentricity correction current of respective heads, and when switching heads, predicts the velocity fluctuation or current step differential between heads from the eccentricity correction current, and thus corrects the control system to eliminate velocity fluctuation and current step differential.

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patent: 2000-021104 (2000-01-01), None
patent: 2001-283543 (2001-10-01), None

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