The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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Robust Servo System for Optical Disk Drive Systems

광디스크 드라이브를 위한 강인 제어기 설계

  • 박범호 (LG전자 DM연구소) ;
  • 정정주 (한양대학교 전자ㆍ전기ㆍ컴퓨터공학부) ;
  • 백종식 (한양대학교 전자ㆍ통신ㆍ전파공학과)
  • Published : 2005.01.01
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Abstract

This paper proposes a new and simple input prediction method for robust servo system. A robust tracking control system for optical disk drives was proposed recently based on both Coprime Factorization (CF) and Zero Phase Error Tracking (ZPET) control. The CF control system can be designed simply and systematically. Moreover, this system has not only stability but also robustness to parameter uncertainties and disturbance rejection capability. Since optical disk tracking servo system can detect only tracking error, it was proposed that the reference input signal for ZPET could be estimated from tracking errors. In this paper, we propose a new control structure for the ZPET controller. It requires less memory than the previously proposed method for the reference signal generation. Numerical simulation results show that the proposed method is effective.

Keywords

References

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