Stabilization of unknown nonlinear systems using neural networks

Authors:
Fathi Fourati;Mohamed Chtourou;Mohamed Kamoun
Affiliations:
Intelligent Control, Optimization and Design of Complex Systems (ICOS), National School of Engineering of Sfax, B.P. W, 3038 Sfax, Tunisia;Intelligent Control, Optimization and Design of Complex Systems (ICOS), National School of Engineering of Sfax, B.P. W, 3038 Sfax, Tunisia;Automatic Control Unit (UCA), National School of Engineering of Sfax, B.P. W, 3038 Sfax, Tunisia
Venue:
Applied Soft Computing
Year:
2008

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Abstract

This paper deals with stabilization of unknown nonlinear systems using a nonlinear controller made with a backpropagation neural network. Control strategies based on an inverse state neural model built from an off-line learning step are proposed. The proposed strategies can be implemented following two approaches. The first one consists on computing control horizon based on actual state vector and desired one at a future instant. The second approach applies control action in the sense of a receding horizon. Adaptive control has been considered where the updating of the neural controller is accomplished to optimize different control objectives.