A gap metric based weighting method for multimodel predictive control of MIMO nonlinear systems

被引:57
作者
Du, Jingjing [1 ,2 ]
Johansen, Tor Arne [1 ]
机构
[1] Norwegian Univ Sci & Technol, Dept Engn Cybernet, NO-7491 Trondheim, Norway
[2] Henan Polytech Univ, Sch Elect Engn & Automat, Jiaozuo 454000, Peoples R China
关键词
Multimodel predictive control; Gap metric; Weighting function; MIMO nonlinear system; Multiple scheduling variables; ROBUSTNESS;
D O I
10.1016/j.jprocont.2014.06.002
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A novel weighting method is proposed for multimodel predictive control of nonlinear systems with multiple scheduling variables (MIMO nonlinear systems), in which the gap metric is employed to formulate weighting functions for local controller combination. Compared to existent weighting functions, the proposed weighting method has two major advantages: firstly, there is only one tuning parameter, which makes it simpler. Secondly, the weights depend only on the scheduling vector and can be calculated off-line and stored in a look-up table. Therefore, the computational load can be reduced, especially for nonlinear systems with multiple scheduling variables. A MIMO CSTR system is studied to demonstrate the effectiveness of the proposed weighting method. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1346 / 1357
页数:12
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