International Journal of Control, Automation, and Systems

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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A Robust Fine Seek Controller Design Method Based on the Estimation of Velocity Disturbance

  • Lee, Moon-Noh (Department of Computer Engineering, Dong-Eui University) ;
  • Shin, Jin-Ho (Department of Mechatronics Engineering, Dong-Eui University) ;
  • Kim, Seong-Woo (Department of Computer Software Engineering, Dong-Eui University) ;
  • Lee, Jong-Min (Department of Computer Software Engineering, Dong-Eui University) ;
  • Jin, Kyoung-Bog (School of Mechatronics Engineering, Korea University of Technology and Education)
  • Published : 2007.06.30
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Abstract

This paper presents a systematic method of estimating a velocity disturbance occurring in the fine seek control system of an optical disk drive. A fine seek loop gain adjustment algorithm is introduced to accurately estimate the velocity disturbance in spite of the uncertainties of the fine actuator. The velocity disturbance can be estimated from a measurable velocity, a fine seek controller output, and a compensated fine actuator model. A robust fine seek controller can be designed by considering a minimum fine seek open-loop gain, calculated by the estimated velocity disturbance. The proposed controller design method is applied to the fine seek control system of a DVD rewritable drive and is evaluated through the experimental results.

Keywords

References

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