Abstract

ANZALONE, Alessandro; IGLESIAS, Edinzo; GARCIA, Yohn  and  SMITH, Carlos A. A fuzzy logic controller with fuzzy scaling factor calculator applied to a nonlinear chemical processControlador de lógica difusa con calculador difuso de factor de escalamiento aplicado a un proceso químico no lineal . Rev. Téc. Ing. Univ. Zulia [online]. 2003, vol.26, n.3, pp.189-196. ISSN 0254-0770.

A combined fuzzy controller, consisting of a conventional fuzzy logic controller (FLC) with a fuzzy output scaling factor calculator that modifies the scaling factor of the FLC, is proposed. The performance of this controller is compared to the performance of a PID controller and a conventional FLC for disturbance rejection in a nonlinear chemical process. The proposed controller maintains its robustness under conditions at which performance of the other controllers decay.

Keywords : Fuzzy control; fuzzy scaling factor; nonlinear chemical process.