Modeling and Control of Nonlinear Discrete-time Systems Based on Compound Neural Networks

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• 作者：Yan ZHANG ; Xiuxia LIANG ; Peng YANG ; Zengqiang CHEN ; Zhuzhi YUAN
• 关键词：adaptive inverse control ; compound neural network ; process control ; reaction engineering ; multi-input multi-output nonlinear system
• 刊名：Chinese Journal of Chemical Engineering
• 出版年：2009
• 出版时间：June 2009
• 年：2009
• 卷：17
• 期：3
• 页码：454-459
• 全文大小：271 K

文摘

An adaptive inverse controller for nonliear discrete-time system is proposed in this paper. A compound neural network is constructed to identify the nonlinear system, which includes a linear part to approximate the nonlinear system and a recurrent neural network to minimize the difference between the linear model and the real nonlinear system. Because the current control input is not included in the input vector of recurrent neural network (RNN), the inverse control law can be calculated directly. This scheme can be used in real-time nonlinear single-input single-output (SISO) and multi-input multi-output (MIMO) system control with less computation work. Simulation studies have shown that this scheme is simple and affects good control accuracy and robustness.