Journal of Process Control, Vol.22, No.2, 423-435, 2012
Multiple-model based predictive control of nonlinear hybrid systems based on global optimization using the Bernstein polynomial approach
In this paper, we propose a Bernstein polynomial based global optimization algorithm for the optimal feedback control of nonlinear hybrid systems using a multiple-model approach. Specifically, we solve at every sampling instant a polynomial mixed-integer nonlinear programming problem arising in the model predictive control strategy. The proposed algorithm uses the Bernstein polynomial form in a branch-and-bound framework, with new ingredients such as branching for integer decision variables and fathoming for each subproblem in the branch-and-bound tree. The performance of the proposed algorithm is tested and compared with existing algorithms on a benchmark three-spherical tank system. The test results show the superior performance of the proposed algorithm. (C) 2011 Elsevier Ltd. All rights reserved.
Keywords:Bernstein polynomials;Global optimization;Model predictive control;Multiple-model control;Nonlinear hybrid system