A Comparative Study of Fuzzy Logic and Classical Control with EPICS*

The classical control theory which relies on the mathematical model of the underlying system has been successfully applied to the control of a large variety of simple, non-linear processes. However, it has not been as widely used with complicated, nonlinear, time varying systems or with processes suffering from noisy measurements. The main idea of fuzzy control is to build a model of an expert operator who is capable of controlling the plant without thinking in terms of a mathematical model. This paper describes the application of fuzzy control to a feedback system within an EPICS environment. Comparison of the application of a modern controller and a fuzzy controller to an inverted pendulum problem is presented.