Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Development of negative Input Shaping Technique for MIMO System

다중 입출력 시스템을 위한 음의 입력다듬기 기법의 개발

  • Published : 2000.12.01
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Abstract

In this paper, we propose a method to apply the Input Shaping Technique (IST) to multi-input multi-output (MIMO) systems. In MIMO systems, there is a high possibility of multi-mode residual vibration. The IST filter designed for this multi mode may need a longer time to suppress the residual vibration. Previous works prove that we can shorten the time lag by using negative sequence. This negative sequence, however, causes another problem - it requires excessive control input. In this paper, we provide a remedy to reduce the size of control input by limiting the reference input by limiting the reference input and its derivative. The result of simulations and experiments on a 2 link flexible arm confirmed the effectiveness of the proposed method.

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References

  1. 박주이, 장평훈, '입력다듬기 기법을 이용한 유연관절을 갖는 로봇의 잔류진동 제거,' 대한기계학회논문집, 제18권 제11호, pp. 3066-3074, 1994
  2. N. C. Singer and W. P. Seering, 'Preshaping command inputs to reduce system vibration,' ASME Journal of Dynamic System, Measurement and Control, vol. 112, pp. 76-82, 1990
  3. B. W. Rappole, N. C. Singer, and W. P. Seering, 'Input shaping with negative sequences for reducing vibrations in flexible structure,' Proceedings of the American Control Conference, San Francisco, California, pp. 2695-2699, 1993 https://doi.org/10.1109/ACC.1993.4176375
  4. W. E. Singhose and B. W. Mills, 'Command generation using specified negative amplitude input shaping,' Proceedings of the American Control Conference, San Diego, California, pp. 61-65, 1999 https://doi.org/10.1109/ACC.1999.782740
  5. W. E. Singhose, W. P. Seering, and N. C. Singer, 'Time-optimal negative input shapers,' ASME Journal of Dynamic System, Measurement, and Control, vol. 119, pp. 198-205, 1997
  6. B. W. Rappole, Minimizing Residual Vibrations in Flexible Systems, MIT Artificial Intelligence Laboratory Technical Report AITR-1371, June, 1992