On the use of fuzzy logic in control systems for technological equipment

Abstract

The possibilities and prospects of using fuzzy logic in control systems for electro-technological equipment are analyzed based on a comparative study of standard temperature controllers of resistance furnaces and fuzzy logic controllers. It is shown that it is effective to use fuzzy logic control systems for different kinds of technological equipment. The development of fuzzy logic control systems and characteristics of their application are analyzed. The basic structures of systems constructed using fuzzy logic control are considered, is the way in which they are classified. The simulation models of temperature controllers for resistance furnaces are studied using the Matlab/Simulink software including the Fuzzy Logic Toolbox application. It is shown that a use of fuzzy controllers for simple deterministic control systems like temperature controllers of resistance furnaces does not lead to any substantial improvement in accuracy and control quality, but needs a sophisticated algorithm for control and response speed of the control system. It is assumed that a use of fuzzy logic controllers to control more sophisticated equipment characterized by the multifactor processes with a high degree of uncertainty and difficulties in determination of output parameters will allow one to obtain better results than do conventional systems.