Journal of the Korean Institute of Intelligent Systems (한국지능시스템학회논문지)

Korean Institute of Intelligent Systems (한국지능시스템학회)
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Adaptive Repetitive Control for an Eccentricity Compensation of Optical Disk Drive

광 디스크 드라이브의 편심 보상을 위한 적응 반복 제어

  • 서삼준 (안양대학교 전기전자공학과) ;
  • 김동원 (고려대학교 전기공학과) ;
  • 박귀태 (고려대학교 전기공학과)
  • Published : 2005.04.01
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Abstract

This paper presents an adaptive repetitive control scheme for optical disk drives to track a variable periodic reference signal. Periodic disturbances can be adequately attenuated using the concept of repetitive control, provided the period is known. Because optical disk drives support various speeds, they have the varying periodic disturbances. Based on repetitive control to change sampling frequency to follow the change of reference period, an adaptive repetitive control is proposed in order to deal with such disturbances. The proposed control consists of the repetitive controller and the frequency generator. The former uses a varying sampler operating at fixed multiple times of the disturbance frequency and the latter generates the changeable sampling frequency based on the disturbance frequency. The experimental results on the control of an optical disk drive demonstrate the effectiveness of the proposed schemes and the improvement of random access time as well.

본 논문에서는 변하는 주기 기준 신호를 추종하기 위한 광학 디스크 드라이브의 적응 반복 제어 기법을 제시한다. 주기가 알려진 주기적인 외란은 반복 제어 개념을 이용하면 충분히 제거할 수 있다. 광학 디스크 드라이브는 다양한 속도를 지원하기 때문에 변하는 주기의 외란을 가진다. 기준 주기 변화를 추종하기 위해 샘플링 주파수를 변화시키는 반복 제어를 기초로 하여 주기가 변하는 외란을 다루기 위한 적응 반복 제어를 제안한다. 제안한 제어 기법은 반복 제어기와 주파수 발생기고 구성된다. 전자는 외란 주파수의 고정 배수에서 동작하는 가변 샘플러를 사용하고 후자는 외란 주파수에 따라 변하는 샘플링 주파수를 발생한다. 광학 디스크 드라이브 제어 대한 실험 결과에서 제안한 기법의 우수성과 랜덤 탐색 시간의 개선을 보인다.

Keywords

References

  1. Y. Yamamoto and S. Hara, 'Relationships between internal and external stability for infinite-dimensional systems with applications to a servo problem' IEEE Transaction on Automatic control, Vol. 33, No. 11, pp. 1044-1052, 1988 https://doi.org/10.1109/9.14416
  2. Y. Yamamoto and S. Hara, 'Repetitive control system : a new type servo system for periodic exogenous signals,' IEEE Transaction on Automatic control, Vol. 33, No. 7, pp. 659-668, 1989
  3. T. Katayama and M. Ogawa, 'High-precisoin tracking control system for digital video disk players' IEEE Transactions on Consumer Electronics, Vol. 41, No. 2, pp. 313-321, 1995 https://doi.org/10.1109/30.391360
  4. J. H. Moon, M. N. Lee, and M. J. Chung, 'Repetitive control for the track-following servo system of an optical disk drive,' IEEE Transactions on Control Systems Technology, Vol. 6, No. 5, pp. 663-670, 1998 https://doi.org/10.1109/87.709501
  5. C. Cosner, G. Anwar, M. Tomizuka, 'Discrete time repetitive control for robot manipulators' IEEE International Conference on Robotics and Automation, pp. 1341-1346, 1988
  6. M. Tomizuka, T. Tsao and K. K. Chew, 'Analysis and synthesis of discrete-time repetitive controller,' Transaction on ASME Journal of Dyn. Syst., Meas. Control, Vol. 111, pp. 353-358, 1989 https://doi.org/10.1115/1.3153060
  7. Tadashi Inoue, 'Practical repetitive control system design,' 29th Conference on Decision and Control, pp. 1673-1678, 1990
  8. K. K. Chew and M. Tomisuka, 'Digital control of repetitive errors in disk drive systems,' IEEE Control Systems Magazine, pp. 16-20, 1990
  9. C. Cosner, G. Anwar, M. Tomizuka, 'Plug in repetitive control for industrial robotic manipulators,' IEEE International Conference on Robotics and Automation, pp. 1970-1975, 1990
  10. K. Arai, H. Okumura, H. Tokumaru and K. Ohishi, 'Improvement of performance of a tracking servo system for an optical disk drive,' Japan Journal of Appl. Phys., Vol. 39, No. 2B, pp. 855-861, 2000 https://doi.org/10.1143/JJAP.39.855
  11. H. Dotsch and H. T. Smakman, 'Adaptive repetitive control of a compact disc mechanism, ' in 34th Conference on Decision and Control, pp. 1720-1725, 1995
  12. T. Y. Doh, J. R. Ryoo and M.J. Chung 'Repetitive controller design for track-following servo system of optical disk drive' IEEE International Workshop on Advanced Motion Control, pp. 176-181, 2002
  13. Z. Cao and G. F. Ledwich, 'Adaptive repetitive control to track variable periodic signals with fixed sampling rate,' IEEE/ASME Transactions on Mechatronics, Vol. 7, No.3. pp. 378-384, 2002 https://doi.org/10.1109/TMECH.2002.802730
  14. Y. Onuki and H. Ishioka, 'Compensation for repeatable tracking errors in hard drivers using discrete-time repetitive controllers,' IEEE/ASME Transactions on Mechatronics, Vol. 6, No. 2. pp. 132-136, 2001 https://doi.org/10.1109/3516.928726