Track Following Control for Large Capacity Flexible Disk Drives -Disturbance Observer Design using Two Position Sensors-

Jun Ueda; Akihiko Imagi; Hitoshi Tamayama; Tsuneo Yoshikawa

doi:10.20965/jrm.2003.p0458

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JRM Vol.15 No.4 pp. 458-468

doi: 10.20965/jrm.2003.p0458

(2003)

Paper:

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Track Following Control for Large Capacity Flexible Disk Drives -Disturbance Observer Design using Two Position Sensors-

Jun Ueda^, Akihiko Imagi^, Hitoshi Tamayama^, and Tsuneo Yoshikawa^****

^*Graduate School of Information Science, Nara Institute of Science and Technology (NAIST) Nara, 630-0192 Japan

^**Advanced Technology R&D center, Mitsubishi Electric Corporation, Hyogo, 661-8661 Japan

^***Koriyama Works, Mitsubishi Electric Corporation, Fukushima, 963-8872 Japan

^****Department of Mechanical Engineering, Kyoto University, Kyoto 606-8501 Japan

Received:

April 4, 2003

Accepted:

July 7, 2003

Published:

August 20, 2003

Keywords:

servo mechanism, disk drives, positioning, observer, friction

Abstract

Storage devices require highly accurate positioning performance to cope with disturbance friction force and vibration. In this paper, a novel configuration of realizing a two-degree-of-freedom (2DOF) track following controller with a disturbance observer is proposed for large capacity FDDs with backward compatibility. The controller is designed using two position sensors, one of them is used to handle low density disks. Furthermore, a new open loop design method is applied to choose the stable parameter against unmodeled dynamics. The validity of the proposed scheme has been confirmed by experiments.

Cite this article as:

J. Ueda, A. Imagi, H. Tamayama, and T. Yoshikawa, “Track Following Control for Large Capacity Flexible Disk Drives -Disturbance Observer Design using Two Position Sensors-,” J. Robot. Mechatron., Vol.15, No.4, pp. 458-468, 2003.

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This article is published under a Creative Commons Attribution-NoDerivatives 4.0 Internationa License.

Track Following Control for Large Capacity Flexible Disk Drives -Disturbance Observer Design using Two Position Sensors-

Jun Ueda*, Akihiko Imagi**, Hitoshi Tamayama***, and Tsuneo Yoshikawa****

Jun Ueda^, Akihiko Imagi^, Hitoshi Tamayama^, and Tsuneo Yoshikawa^****