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Proceedings Paper

Direct SISO loop design of tracking servo system for optical disk drives
Author(s): Jiandong Yang; Xiandeng Pei; Longfa Pan
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Paper Abstract

The dual-stage actuators are used in the positioning servo system of optical disk drives. The direct single-variable design (DSD) technique is studied for designing the tracking servo system in which there is a sensor to measure the relative displacement between the two stages. The conclusion clearly given is that a servo system using a dual-stage actuator with multi-variable characteristics can be directly designed as two single-variable systems. The tracking servo system can be designed as two independent servo loops. The multivariable problem can be treated as a single-variable problem. The features and forms of the dual-stage-actuator servo systems are also studied. The control accuracy and robust stability of the system by DSD are investigated. The interaction between the loops is studied by use of an equivalent perturbed model. The simulation of tracking control of the system is presented.

Paper Details

Date Published: 20 September 1996
PDF: 6 pages
Proc. SPIE 2890, Optical Recording, Storage, and Retrieval Systems, (20 September 1996); doi: 10.1117/12.251976
Show Author Affiliations
Jiandong Yang, Huazhong Univ. of Science and Technology (China)
Xiandeng Pei, Huazhong Univ. of Science and Technology (China)
Longfa Pan, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 2890:
Optical Recording, Storage, and Retrieval Systems
Baogen Feng; Yoshito Tsunoda, Editor(s)

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