Optimal Control Policy for Linear-Quadratic Control Problems with Delay and Intermediate State Constraints

  • Chong, Kil-To (Institute of Information and Communication, Chonbuk National University) ;
  • Kostyukova, Olga (Institute of mathematics, National Academy of Sciences of Belarus) ;
  • Kurdina, Mariya (Institute of mathematics, National Academy of Sciences of Belarus)
  • Published : 2008.12.31

Abstract

In this paper, we consider a terminal, linear control system with delay, subject to unknown but bounded disturbances. For this system, we consider the problem of constructing a worst-case optimal feedback control policy, which can be corrected at fixed, intermediate time instants. The policy should guarantee that for all admissible uncertainties the system states are in prescribed neighborhoods of predefined system states, at all fixed, intermediate time instants, and in the neighborhood of a given state at a terminal time instant, and the value of the cost function is the best guaranteed value. Simple explicit rules(which can be easily implemented on-line) for constructing the optimal control policy in the original control problem are derived.

Keywords

References

  1. T. Alamo, D. Munoz de la Pena, D. Limon and E.F. Camacho, "Constrained min-max predictive control: Modification of the objective function leading to polynomial complexity," IEEE Trans. on Automatic Control, vol. 50, no. 5, pp. 710-714, 2005 https://doi.org/10.1109/TAC.2005.847039
  2. R. Bellman, Adaptive Control Processes - A Guided Tour, Princeton University Press, 1961
  3. A. Bemporad, F. Borrelli, and M. Morari, "Min-Max control of constrained uncertain discretetime linear systems," IEEE Trans. on Automatic Control, vol. 48, no. 9, pp. 1600-1606, 2003 https://doi.org/10.1109/TAC.2003.816984
  4. F. Fontes and L. Magni, "Min-max Model predictive control of nonlinear systems using discontinuous feedbacks," IEEE Trans. on Automatic Control, vol. 48, no. 10, pp. 1750-1755, 2003 https://doi.org/10.1109/TAC.2003.817915
  5. E. Kerrigan and J. M. Maciejowski, "Feedback min-max model predictive control using a single linear program: Robust stability and explicit solution," International Journal of Robust and Nonlinear Control, vol. 14, pp. 395-413, 2004 https://doi.org/10.1002/rnc.889
  6. M. V. Kothare, V. Balakrishnan and M. Morari, "Robust constrained model predictive control using linear matrix inequalities," Automatica, vol. 32, no. 10, pp. 1361-1379, 1996 https://doi.org/10.1016/0005-1098(96)00063-5
  7. E. A. Kostina and O. I. Kostyukova, "Robust optimal feedback for terminal linear-quadratic control problems under disturbances," Math. Program., Ser. B, vol. 107, pp. 131-153, 2006 https://doi.org/10.1007/s10107-005-0682-4
  8. W. Langson, I. Chryssochoos, S. V. Rakovic and D. Q. Mayne, "Robust model predictive control using tubes," Automatica, vol. 40, pp. 125-133, 2004 https://doi.org/10.1016/j.automatica.2003.08.009
  9. J. H. Lee and Z. Yu, "Worst-case formulation of model predictive control for systems with bounded parameters," Automatica, vol. 33, no. 5, pp. 763-781, 1997 https://doi.org/10.1016/S0005-1098(96)00255-5
  10. L. Magni, G. De Nicolao, R. Scattolini, and F. Allgower, "Robust receding horizon control for non-linear discrete-time system," Proc. of the 15th IFAC World Congress, Spain, 2002
  11. J. R. Magnus and H. Neudecker, Matrix Differential Calculus with Applications in Statistics and Econometrics, Wiley & Sons, 1988
  12. A. S. Matveev and V. A. Yakubovich, "Nonconvex global optimization in optimal control theory," Journal of Mathematical Sciences, vol. 60, pp. 128-175, 1998
  13. D. Q. Mayne, J. B. Rawlings, C. V. Rao, and P. O. Scokaert, "Constrained model predictive control: Stability and optimality," Automatica, vol. 36, pp. 789-814, 2000 https://doi.org/10.1016/S0005-1098(99)00214-9
  14. L. S. Pontryagin, V. G. Boltyanskij, R. V. Gamkrelidze, and E. F. Mishchenko, Selected works, Vol. 4, The Mathematical Theory of Optimal Processes. R. V. Gamkrelidze (ed.) Classics of Soviet Mathematics, Gordon and Breach Science Publishers, New York, 1986. (Translation from Russian edition, Nauka, Moscow, 1961)
  15. A. Savkin, E. Skafidas, and R. Evans, "Robust output feedback stabilizability via controller switching," Automatica, vol. 35, pp. 69-74, 1999 https://doi.org/10.1016/S0005-1098(98)00136-8
  16. P. O. Scokaert and D. Q. Mayne, "Min-max feedback model predictive control for constrained linear systems," IEEE Trans. on Automatic Control, vol. 43, no. 8, pp. 1136-1142, 1998 https://doi.org/10.1109/9.704989