A new neural network-based approach for self-tuning control of nonlinear multi-input multi-output dynamic systems

Authors:
Jose I. Canelon;Leang S. Shieh;Yongpeng Zhang;Cajetan M. Akujuobi
Affiliations:
School of Electrical Engineering, Universidad del Zulia, Maracaibo,Venezuela;Department of Electrical and Computer Engineering, University of Houston, Houston, TX;Center of Excellence for Communication Systems Technology Research and Department of Engineering Technology, Prairie View A&M University, Prairie View, TX;Center of Excellence for Communication Systems Technology Research and Department of Engineering Technology, Prairie View A&M University, Prairie View, TX
Venue:
ACC'09 Proceedings of the 2009 conference on American Control Conference
Year:
2009

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Abstract

This paper presents a new neural network-based approach for self-tuning control of nonlinear MIMO dynamic systems. According to the approach, a neural network ARMAX (NN-ARMAX) model of the system is identified and continuously updated, using an online training algorithm. Control design is accomplished by solving an optimal discrete-time linear quadratic tracking problem using an observable block companion form Kalman innovation model, which is built from the parameters of a local linear version of the NN-ARMAX model. The state-feedback control law is implemented using the Kalman estimated state, which is calculated without estimating the noise covariance properties. The effectiveness of the proposed control approach is illustrated using a simulation example.