Design and Simulation of Membership Functions for Fuzzification Module of Fuzzy System

Abstract

This report presents the proposed circuit for the designing of the Gaussian membership function using electronic devices like metal oxide semiconductor field effect transistor (MOSFET), operational amplifier (OPAMP) in ORCAD. Proposed circuit includes concepts of current mirror and current sink. In the proposed circuit we can also have Sigmoidal (S) and Antisigmoidal (Z) membership functions by varying various voltages. Moreover this report also includes the step of fuzzy model that is Rule Composition. In the rule composition process we have used the MIN and MAX operators and provided the Gaussian, Sigmoidal (S), Antisigmoidal (Z) combinations as an input.