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		Junyong ZHAI,Shumin FEI,Feipeng DA.[en_title][J].Control Theory and Technology,2007,5(3):266~270.[Copy]

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JunyongZHAI,ShuminFEI,FeipengDA
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Received:November 29, 2004Revised:January 26, 2007

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Control design approaches for nonlinear systems using multiple models

Junyong ZHAI, Shumin FEI, Feipeng DA

(Research Institute of Automation, Southeast University, Nanjing Jiangsu 210096, China)

Abstract:

It is difficult to realize control for some complex nonlinear systems operated in different operating regions. Based on developing local models for different operating regions of the process, a novel algorithm using multiple models is proposed. It utilizes dynamic model bank to establish multiple local models, and their membership functions are defined according to respective regions. Then the nonlinear system is approximated to a weighted combination of the local models. The stability of the nonlinear system is proven. Finally, simulations are given to demonstrate the validity of the proposed method.

Key words: Multiple models Operating region Lyapunov function