Method for controlling digital closed servo loop system and disk

Details Method for controlling digital closed servo loop system and disk Method for controlling digital closed servo loop system and disk

1995-02-21

1997-03-04

Kim, W. C.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

318677, 318592, G11B 5596

Patent

active

056085885

ABSTRACT:
A controlled variable is detected at each predetermined timing by a detecting section 2, and the controlled variable is compared with a target value by a comparator 3 to obtain a deviation. A manipulated variable is calculated, based on the deviation, by a compensating section 4, and a height H corresponding to the manipulated variable is calculated by a controlling section 5. A manipulated pulse having the height H and a predetermined width W is provided to a controlled system 6 by the controlling section 5.

REFERENCES:
patent: 4931889 (1990-06-01), Osafune
patent: 5105318 (1992-04-01), Tsuneta et al.
patent: 5146440 (1992-09-01), Yamaguchi et al.
patent: 5150266 (1992-09-01), Albert
patent: 5177652 (1993-01-01), Yamaguchi et al.
patent: 5231550 (1993-07-01), Hashimoto
Pennington et al. "Digital Sector Servo System" IBM TDB vol. 22, No. 6, Nov. 1979 pp. 2476-2481.
Franklin et al. Digital Control of Dynamic Systems 1990 pp. 653-656.

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