Analog fuzzy controller circuit design for control applications

Analog fuzzy controller and its components circuit design for control applications are presented in this paper. There are three main building blocks for analog fuzzy logic controllers: Membership function circuit, fuzzy inference circuit and defuzzification circuit. This paper proposes fuzzification circuit which can be generated triangle and trapezoidal membership functions. In this work we also present multi-input Min-Max circuit which is the main component of fuzzy inference step. Finally the DFC circuit presented in this paper that uses center of gravity method based on voltage follower-aggregation circuit. The simulation results of 0.35 μm technology are provided by Hspice and are given.