A design method of fuzzy controllers using simplified characteristic parameters

A large number of factors that affect control performance has been a major hindrance to the design of satisfactory fuzzy controllers. This is especially true for multi-input multi-output systems where many parameters are involved in the design and therefore, are interacting each other. In this paper, we introduce a novel method for the design of fuzzy logic controller (FLC) that can be easily applicable to such multivariable systems. The approach here is to define a set of characteristic parameters (CP) that enable us to design fuzzy controllers in a systematic as well as a simple way. These parameters a re extracted by examining the general structure and characteristics of the individual components of FLC and by parameterizing those. Based upon this formulation, a simulation study is performed for the control of an inverted pendulum. The simplicity and effectiveness of this method are discussed in detail through analysis of the controller results.