Digital velocity control for a disk drive servo system

Details Digital velocity control for a disk drive servo system Digital velocity control for a disk drive servo system

G - Physics

11

B

352/21.33

G11B 5/55 (2006.01) G11B 21/08 (2006.01)

Patent

CA 1270558

ABSTRACT OF THE DISCLOSURE A high velocity seek deceleration technique is disclosed for seek operations of disk drives wherein measured time per track is compared to a predetermined time per track in a memory as indexed by number of tracks to end of seek and determines an error value which adjusts a deceleration amplifier. The gain of digital output to the amplifier is adjusted depending on the number of tracks to end of seek, the higher the number, the higher the gain. Further, a variable bandwidth filter is employed to increase bandwidth as velocity decreases.

536040

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