Combined Fuzzy Control Research Articles

A combined fuzzy and classical PID controller

This paper presents a new kind of process controller which combines the functional elements of a fuzzy logic controller and that of a classical PID controller. The control algorithm of such a controller is formulated by means of the fuzzy set theory and the classical control theory. The properties of this controller are investigated in terms of The on-line implementation of thic controller is realized on a PC286/287 by means of the nonlinearity and robustness. The off-line design of this controller is developed using linguistic phase plane analysis and classical design heuristics on a HP9000/370 computer. real-time TUTSIM software package. The plant investigation includes a simulated model and an experimental heating process.