선형피드백시스템에 대한 직접학습제어

Direct Learning Control for Linear Feedback Systems

  • 안현식 (국민대 공대 전자정보통신공학부)
  • 발행 : 2005.02.01

초록

In this paper, a Direct Learning Control (DLC) method is proposed for linear feedback systems to improve the tracking performance when the task of the control system is repetitive. DLC can generate the desired control input directly from the previously learned control inputs corresponding to other output trajectories. It is assumed that all the desired output functions given to the system have some relations called proportionality and it is shown by mathematical analysis that DLC can be utilized to genera additional control efforts for the perfect tracking. To show the validity and tracking performance of the proposed method, some simulations are performed for the tracking control of a linear system with a PI controller.

키워드

참고문헌

  1. Z. Bien and J.-X. Xu, Iterative learning control-Analysis, Design, Integration and Applications, Academic Publishers, Boston, 1998
  2. K. H. Park, Z. Bien, and D. H. Hwang, 'A study on robustness of PID-type iterative learning controller against initial state error,' Int. J. Syst. Sci., vol. 30. no. 1, pp, 49-59, 1999 https://doi.org/10.1080/002077299292669
  3. T. Y. Kuc and W. G. Han, 'An adaptive PID learning control of robot manipulators,' Automatica, vol. 36, pp. 717-725, 2000 https://doi.org/10.1016/S0005-1098(99)00198-3
  4. J. Y. Choi and J. S. Lee, 'Adaptive iterative learning control of uncertain robotic systems,' lEE Proceedings-Control Theory and Applications. vol. 147, no. 2. pp. 217-223, 2000 https://doi.org/10.1049/ip-cta:20000138
  5. P. B. Goldsmith, 'The equivalence of LTI iterative learning control and feedback control.' Proc. of IEEE International Conference on Systems, Man, and Cybernetics, Vol. 5, pp, 3443 -3448, 2000 https://doi.org/10.1109/ICSMC.2000.886541
  6. M. Norrlof and S. Gunnarsson, 'Experimental comparison of some classical iterative learning control algorithms,' IEEE Transactions on Robotics and Automation, vol. 18, no. 4. pp. 636-641, 2002 https://doi.org/10.1109/TRA.2002.802210
  7. T.-J. Jang, C.-H. Choi, and H.-S. Ahn, 'Iterative learning control in feedback systems,' Automatica, vol. 31, no. 2, pp. 243-248, 1995 https://doi.org/10.1016/0005-1098(94)00064-P
  8. J.-X Xu, 'Direct learning of control efforts fortrajectories with different time scales,' IEEE Automat. Contr., vol. 43, pp. 1027-1030, 1998 https://doi.org/10.1109/9.701122
  9. J.-X. Xu and T. Zhu, 'Dual-scale direct learning control of trajectory tracking for a class of nonlinear uncertain systems,' IEEE Trans. Automat. Contr., vol. 44, pp. 1884-1888, 1999 https://doi.org/10.1109/9.793729
  10. J.-X. Xu, P. Korondi, R. Yan, and Z.-H. Guan, 'Direct learning control design for a class of linear time-varying switched systems,' Proc. of International Conference on Control and Automation (ICCA '03), Montreal, Canada, pp. 466-470, 2003
  11. H.-S. Ahn, 'DLC Approach to Reference Input Shaping,' Proc. of ITC-CSCC, pp. 166-169, 2003