Journal of the Institute of Electronics Engineers of Korea SC (전자공학회논문지SC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Robust Output Regulator with Frequency Adaptation Algorithm for Optical Disc Drives

광디스크를 위한 주파수 적응 알고리즘과 함께하는 강인 출력 제어기

  • Kim, Sang-Hyun (ASRI, Department of Electrical Engineering, Seoul National University) ;
  • Kim, Hyung-Jong (ASRI, Department of Electrical Engineering, Seoul National University) ;
  • Shim, Hyung-Bo (ASRI, Department of Electrical Engineering, Seoul National University)
  • Received : 2011.04.22
  • Accepted : 2011.07.05
  • Published : 2011.07.25
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Abstract

This paper presents a control scheme to cancel periodic disturbance with unknown frequency for optical disc drives. The control scheme consists of an output regulator and a frequency adaptive algorithm. Here, the frequency adaptive algorithm based on IMP plays a role in obtaining a frequency of periodic disturbance. The stability analysis of whole system and disturbance rejection performance are proven by the singular perturbation theory. The contribution of this paper are as follows. (1) There is no design constraints of the frequency range. (2) Ability for perfect disturbance rejection is preserved even with uncertain plant model.

본 논문에서는 알 수 없는 주파수를 가지는 주기적인 외란이 존재하는 광디스크 드라이브에 대하여 주파수 적응 알고리즘과 출력 제어기를 추가하여 외란을 제거하는 제어기법을 제안한다. 여기서 IMP(internal model principal)에 기반을 두는 주파수 적응 알고리즘은 주기적인 외란의 주파수를 알아내는 역할을 한다. 전체 시스템의 안정도 및 외란제거 성능은 특이섭동이론(singular perturbation theory)으로 증명된다. 본 논문의 기여는 주파수 범위에 따른 설계의 제약이 없다는 점과 모델 불확실성이 존재할 때도 외란을 제거할 수 있다는 점을 들 수 있다.

Keywords

References

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