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Neuro-predictive process control using online controller adaptation

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3 Author(s)
Parlos, A.G. ; Dept. of Mech. Eng., Texas A&M Univ., College Station, TX, USA ; Parthasarathy, S. ; Atiya, A.F.

A novel architecture for integrating neural networks with industrial controllers is proposed, for use in predictive control of complex process systems. In the proposed method, a conventional PI controller is used to control the process. In addition, a recurrent neural network is used in the form of a multistep-ahead predictor to model the process dynamics. The parameters of the PI controller are tuned by a backpropagation-through-time like approach using “parallel learning” to achieve acceptable regulation and stabilization of the controlled process. The advantage of such a formulation is the effective online adaptation of the controller parameters while the process is in operation, and the tracking of the different process operating regimes and variations. The proposed method is used in the stabilization and transient control of U-tube steam generator water level. The proposed predictive controller stabilizes the process and improves its transient performance over the entire operating range

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Control Systems Technology, IEEE Transactions on  (Volume:9 ,  Issue: 5 )