Identification and nonlinear model predictive control of MIMO Hammerstein system with constraints
Da-zi Li , Yuan-xin Jia , Quan-shan Li , Qi-bing Jin
Journal of Central South University ›› 2017, Vol. 24 ›› Issue (2) : 448 -458.
Identification and nonlinear model predictive control of MIMO Hammerstein system with constraints
This work is concerned with identification and nonlinear predictive control method for MIMO Hammerstein systems with constraints. Firstly, an identification method based on steady-state responses and sub-model method is introduced to MIMO Hammerstein system. A modified version of artificial bee colony algorithm is proposed to improve the prediction ability of Hammerstein model. Next, a computationally efficient nonlinear model predictive control algorithm (MGPC) is developed to deal with constrained problem of MIMO system. The identification process and performance of MGPC are shown. Numerical results about a polymerization reactor validate the effectiveness of the proposed method and the comparisons show that MGPC has a better performance than QDMC and basic GPC.
model predictive control / system identification / constrained systems / Hammerstein model / polymerization reactor / artificial bee colony algorithm
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