Digital servo control system for use in disk drives

Details Digital servo control system for use in disk drives Digital servo control system for use in disk drives

1994-02-25

1997-11-04

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7704, 360 7814, 369 48, 369 54, G11B 5596

Patent

active

056846509

ABSTRACT:
A servo control system provides adaptive compensation for a variety of tracking and seek problems found in disk drives. The servo control system is ideally implemented in digital form for accuracy, speed and compactness. A first embodiment includes two modes, a tracking (or position) mode and a seek (or velocity) mode, each mode employing a variety of compensation functions. A second embodiment includes a single comprehensive control system which functions during both tracking and seek operations.

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