Repetitive control for the track-following servo system of an optical disk drive

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Disturbances acting on the track-following servo system of an optical disk drive inherently contain significant periodic components that cause tracking errors of a periodic nature. Such disturbances can be effectively rejected by employing a repetitive controller, which must be implemented carefully in consideration of system stability. Plant uncertainty makes it difficult to design a repetitive controller that will improve tracking performance yet preserve system stability, In this paper, we examine the problem of designing a repetitive controller for an optical disk drive track-following servo system,vith uncertain plant coefficients. We propose a graphical design technique based on the frequency domain analysis of linear interval systems, This design method results in a repetitive controller that will maintain system stability against all admissible plant uncertainties. We show simulation and experimental results to verify the validity of the proposed design method.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
1998-09
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, v.6, no.5, pp.663 - 670

ISSN
1063-6536
URI
http://hdl.handle.net/10203/75862
Appears in Collection
EE-Journal Papers(저널논문)
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