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A model‐based PID controller for Hammerstein systems using B‐spline neural networks
Author(s) -
Hong X.,
Iplikci S.,
Chen S.,
Warwick K.
Publication year - 2012
Publication title -
international journal of adaptive control and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 66
eISSN - 1099-1115
pISSN - 0890-6327
DOI - 10.1002/acs.2293
Subject(s) - pid controller , control theory (sociology) , jacobian matrix and determinant , spline (mechanical) , artificial neural network , nonlinear system , computer science , controller (irrigation) , control engineering , mathematics , engineering , artificial intelligence , control (management) , temperature control , agronomy , physics , structural engineering , quantum mechanics , biology
SUMMARY In this paper, a new model‐based proportional–integral–derivative (PID) tuning and controller approach is introduced for Hammerstein systems that are identified on the basis of the observational input/output data. The nonlinear static function in the Hammerstein system is modelled using a B‐spline neural network. The control signal is composed of a PID controller, together with a correction term. Both the parameters in the PID controller and the correction term are optimized on the basis of minimizing the multistep ahead prediction errors. In order to update the control signal, the multistep ahead predictions of the Hammerstein system based on B‐spline neural networks and the associated Jacobian matrix are calculated using the de Boor algorithms, including both the functional and derivative recursions. Numerical examples are utilized to demonstrate the efficacy of the proposed approaches. Copyright © 2012 John Wiley & Sons, Ltd.