Title :
Evolutionary fuzzy neural networks automatic design of rule based controllers of nonlinear delayed systems
Author :
Silva, N. ; Macedo, H. ; Rosa, A.
Author_Institution :
Inst. Superior Tecnico, Tech. Univ. Lisbon, Portugal
Abstract :
An evolutionary fuzzy neural network (EFNN) is used for automatic design of rule base controllers of nonlinear delayed systems. The ideal rule base for thermal regulation is designed for a Cartesian and radial partition of the error state space. New solutions for closed-loop controller learning and the rule base adjustment of delayed systems are proposed. We show that this adjustment is an anticlockwise rotation of the rule base mapping over the error state space. The structure of a controller using EFNN for nonlinear and delayed thermal regulation converges to the advanced hypothesis
Keywords :
closed loop systems; control system CAD; delay systems; fuzzy control; fuzzy neural nets; genetic algorithms; learning (artificial intelligence); nonlinear systems; state-space methods; temperature control; closed-loop systems; error state space; evolutionary fuzzy neural network; fuzzy control; gas heater; genetic algorithm; learning; nonlinear delayed systems; rule base controllers; thermal regulation; Automatic control; Control systems; Delay systems; Fuzzy control; Fuzzy neural networks; Fuzzy systems; Genetic algorithms; Nonlinear control systems; State-space methods; Temperature control;
Conference_Titel :
Fuzzy Systems Proceedings, 1998. IEEE World Congress on Computational Intelligence., The 1998 IEEE International Conference on
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-4863-X
DOI :
10.1109/FUZZY.1998.686301