Identification of Non-Linear
Systems Using Neural Networks, with Application at Fuzzy Systems
Professor Constantin Volosencu
Department of Automatics and Applied Informatics
Faculty of Automatics and Computers
“Politehnica” University of Timisoara
Bd. V. Parvan nr. 2
Timisoara, 300223
Romania
E-mail:
constantin.volosencu@aut.upt.ro,
http://www.aut.upt.ro/~cvolos/
Abstract: The paper present a short review of the ways of using
artificial neural networks with continuous values for non-linear
identification, with application at the fuzzy systems. Feedforward neural
networks with continuous values may be seen as general approximation
functions. Using adequate training methods and according Kolmogorov’s
theorem, we may approximate any kind of multivariable non-linear functions.
Fuzzy systems, developed based on different membership functions, inference
methods, rule bases and defuzzification methods are non-linear systems. The
paper presents some study cases of using feedforward neural networks with
hidden layer and neurons with continuous values to approximate fuzzy systems
with two input and one output variables. Some quality criteria for the
training of the neural networks are introduced. Based on usage of different
training methods, training parameter of neural networks a comparison is
presented, emphasising the quality of training.
Brief Biography of the Speaker: Prof. Constantin Volosencu graduated in
1981 the Faculty of Electrotechnics, “Traian Vuia” Polytechnic Institute of
Timisoara, Romania, as an engineer in automatics and computers and he is
doctor in control systems at “Politehnica” University of Timisoara. In
present he is professor at “Politehnica” University of Timisoara, Faculty of
Automatics and Computers, Department of Automatics and Applied Informatics.
His research interest is in linear control systems, fuzzy control, neural
networks, control of electrical drives, modelling, simulation,
identification and sensor networks. He is author of 9 books and more then
100 scientific papers, published at international conferences and journals.
He was manager of over 30 national an international research projects.
Constantin Volosencu worked from 1981 to 1990 at “Electrotimis” Enterprise
Timisoara, in the field of the control systems for industrial machines,
where he developed control equipments for a large scale of machineries,
which are the objects of 27 patents.
