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

G - Physics

11

B

G11B 5/55 (2006.01) G11B 5/596 (2006.01) G11B 7/095 (2006.01) G11B 21/08 (2006.01) G11B 21/10 (2006.01) G11B 21/20 (2006.01)

Patent

CA 2068329

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.

L'invention est un système de servocommande à correction adaptative de divers problèmes de centrage et de recherche pour lecteurs de disques. Dans la concrétisation idéale de l'invention, ce système de servocommande se présente sous forme numérique, ce qui en fait un système précis, rapide et compact. Une première concrétisation comprend deux modes, un mode de centrage (ou de positionnement) et un mode de recherche (ou d'accélération) qui utilisent chacun diverses fonctions de correction. Une seconde concrétisation comprend un seul système de commande général qui est en fonction durant les opérations de centrage et de recherche.

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