DocumentCode :
1011044
Title :
Adaptive repetitive control for an eccentricity compensation of optical disk drivers
Author :
Chang, Kyungbae ; Shim, Iljoo ; Park, GwiTae
Author_Institution :
Sch. of Electr. Eng., Korea Univ., Seoul, South Korea
Volume :
52
Issue :
2
fYear :
2006
fDate :
5/1/2006 12:00:00 AM
Firstpage :
445
Lastpage :
450
Abstract :
This paper present an adaptive repetitive control scheme for optical disk drivers to track a periodic reference signal with dynamic change in period. Periodic disturbances can be adequately attenuated using the concept of repetitive control, provided the known period. Optical disk drivers support various speeds. So optical disk drivers have the varying periodic disturbance. To deal with time varying periodic disturbances, a proposed repetitive controller is turned based on repetitive control to change sampling frequency to follow the change of reference period The proposed adaptive repetitive control consists of two portions, the repetitive controller and the frequency multiplier, where the former uses a varying sampler operating at a variable sampling rate maintained at fixed multiple times of the disturbance frequency and the latter generate the vary sampling frequency based on the disturbance frequency. An adaptive repetitive control scheme is proposed, implemented on experimental set of an optical disk driver, and demonstrate the effectiveness of the proposed methods and the improvement of the random access time.
Keywords :
adaptive control; disc drives; frequency multipliers; optical disc storage; time-varying systems; adaptive repetitive control; disturbance frequency; eccentricity compensation; frequency multiplier; optical disk drivers; periodic reference signal tracking; random access time; sampling frequency; time varying periodic disturbances; Adaptive control; Adaptive optics; Frequency; Optical attenuators; Optical control; Optical filters; Optical variables control; Programmable control; Sampling methods; Servomechanisms;
fLanguage :
English
Journal_Title :
Consumer Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-3063
Type :
jour
DOI :
10.1109/TCE.2006.1649662
Filename :
1649662
Link To Document :
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