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A new method for the control of discrete nonlinear dynamic systems using neural networks

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3 Author(s)
Adetona, O. ; Center of Excellence in Inf. Syst., Tennessee State Univ., Nashville, TN, USA ; Garcia, E. ; Keel, L.H.

A new controller design method for nonaffine nonlinear dynamic systems is presented in this paper. An identified neural network model of the nonlinear plant is used in the proposed method. The method is based on a new control law that is developed for any discrete deterministic time-invariant nonlinear dynamic system in a subregion Ψx, of an asymptotically stable equilibrium point of the plant. The performance of the control law is not necessarily dependent on the distance between the current state of the plant and the equilibrium state if the nonlinear dynamic system satisfies some mild requirements in Ψx. The control law is simple to implement and is based on a novel linearization of the input-output model of the plant at each instant in time. It can be used to control both minimum phase and nonminimum phase nonaffine nonlinear plants. Extensive empirical studies have confirmed that the control law can be used to control a relatively general class of highly nonlinear multiinput-multioutput (MIMO) plants

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Neural Networks, IEEE Transactions on  (Volume:11 ,  Issue: 1 )