PERFORMANCE COMPARISON OF PID AND FUZZY LOGIC CONTROLLER USING DIFFERENT DEFUZZIFICATION TECHNIQUES FOR POSITIONING CONTROL OF DC MOTORS

In this paper fuzzy logic and proportional-integral-derivative (PID) controllers are compared for controlling the position of direct current (DC) motors. The PID controllers mostly used in industries due to their robust performance in a wide range of operating conditions & their simple tuning methods. This paper presents design of PID controller with Ziegler-Nichols (ZN) technique for controlling the position of the field-controlled with fixed armature current DC motors. A Fuzzy logic controller using smaller rule set is proposed. Simulation results are demonstrated using MATLAB. Performance analysis shows the effectiveness of the designed Fuzzy logic controller as compared to the ZN tuned PID controller & fine tuned PID controller