Multivariable RBF-ARX model-based robust MPC approach and application to thermal power plant

被引:35
作者
Peng, Hui [1 ]
Kitagawa, Genshiro [2 ]
Wu, Jun [1 ]
Ohtsu, Kohei [3 ]
机构
[1] Cent S Univ, Sch Informat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[2] Inst Stat Math, Tokyo 1908562, Japan
[3] Tokyo Univ Marine Sci & Technol, Koto Ku, Tokyo 1358533, Japan
基金
中国国家自然科学基金;
关键词
Nonlinear system; Modeling; Predictive control; Robustness; Stability; Thermal power plant; PREDICTIVE CONTROL STRATEGY; STABILITY; SYSTEMS;
D O I
10.1016/j.apm.2011.01.002
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
For a class of smooth nonlinear multivariable systems whose working-points vary with time and the future working-points knowledge are unknown, a combination of a local linearization and a polytopic uncertain linear parameter-varying (LPV) state-space model is built to approximate the present and the future system's nonlinear behavior, respectively. The combination models are constructed on the basis of a matrix polynomial multi-input multi-output (MIMO) RBF-ARX model identified offline for representing the underlying nonlinear system. A min-max robust MPC strategy is designed to achieve the systems' output-tracking control based on the approximate models proposed. The closed loop stability of the MPC algorithm is guaranteed by the use of time-varying parameter-dependent Lyapunov function and the feasibility of the linear matrix inequalities (LMIs). The effectiveness of the modeling and control methods proposed in this paper is illustrated by a case study of a thermal power plant simulator. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:3541 / 3551
页数:11
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