OPTIMIZATION AND DESIGNING OF PID, FUZZY & PID-FUZZY CONTROLLER

Measuring the flow of liquid is a critical need in many industrial plants. The aim of this paper is to do the comparative study of conventional PID, fuzzy logic controller and PID-Fuzzy controller in the area of liquid flow control. In this paper, performance analysis of conventional PID, fuzzy logic and PID-Fuzzy has been done by the use of MATLAB and simulink and in the end comparison of various time domain parameter is done to prove that the PID- Fuzzy logic controller has small overshoot and fast response as compared to PID controller. PID controller is the most widely used control strategy in industry. The popularity of PID controller can be attributed partly to their robust performance and partly to their functional simplicity. In this paper, the response of the PID and PD controller is oscillatory which damage the system. But the response of the fuzzy logic controller AND PID-Fuzzy is free from these dangerous oscillation in transient period. Hence the Fuzzy logic and PID-Fuzzy logic controller is better than the conventionally used PID controller.