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Adaptive decoupling switching control based on generalised predictive control

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5 Author(s)
Wang, Y. ; State Key Lab. of Synthetical Autom. for Process Ind., Northeastern Univ., Shenyang, China ; Chai, T. ; Fu, J. ; Zhang, Y.
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This study introduces a multivariable adaptive decoupling control strategy using multiple models and neural networks for a class of discrete-time nonlinear dynamic systems. The adaptive decoupling switching control strategy based on generalised predictive control is composed of a linear adaptive decoupling controller, a neural-network-based nonlinear adaptive decoupling controller and a switching mechanism. First, the linear adaptive decoupling controller is designed to ensure the boundedness of the input and output signals of the closed-loop system. Second, the neural-network-based nonlinear adaptive decoupling controller is developed to improve the transient performance of the closed-loop system. Third, the stability and convergence of the closed-loop system are achieved simultaneously by using multiple-models-based switching mechanism. Simulation studies are provided for a numerical example and a forced-circulation evaporation process of an alumina production system so as to demonstrate the effectiveness of the proposed method.

Published in:

Control Theory & Applications, IET  (Volume:6 ,  Issue: 12 )