제어로봇시스템학회:학술대회논문집
- 2001.10a
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- Pages.87.4-87
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- 2001
Design of Disturbance Observer for Track-following Controller of Optical Disk Drive
- Ryoo, Jung-Rae (KAIST) ;
- Doh, Tae-Yong (KAIST) ;
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Chung, Myung-Jin
(KAIST)
- Published : 2001.10.01
Abstract
In this paper, a design guideline of disturbance observer(DOB) for track-following controller is presented. In the track-following control system(TFCS) of optical disk drive(ODD), disturbance rejection is the key issue for the overall performance. DOB gives an excellent advantage of disturbance rejection within its bandwidth determined by a low-pass filter. In general, design of DOB requires a tradeoff between performance and stability, which should be based on quantitative analysis. The external disturbance is well-defined in the frequency domain, which provides the base of the analysis. In addition to a DOB, a proper feedback controller is utilized for guaranteeing overall stability. Some computer simulations and experiments are conducted and some of the results are presented.
Keywords