Comparison between Conventional PID and Fuzzy Logic Controller for Liquid Flow Control: Performance Evaluation of Fuzzy Logic and PID Controller by Using MATLAB/Simulink
Gaurav1, Amrit Kaur2

1Gaurav, Assistant professor, University College of Engineering, Punjabi University, Patiala, India.
2Amrit Kaur, Assistant professor, University College of Engineering,, Punjabi University, Patiala, India.

Manuscript received on May 01, 2012. | Revised Manuscript received on May 29, 2012. | Manuscript Published on June 10, 2012. | PP: 84-88 | Volume-1 Issue-1, June 2012. | Retrieval Number: A113051112 /2012©BEIESP
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Abstract: Measuring the flow of liquids is a critical need in many industrial plants. In recent years, flow control has become a highly multi-disciplinary research activity encompassing theoretical, computational and experimental fluid dynamics. Fuzzy control is based on fuzzy logic-a logical system that is much closer in spirit to human thinking and natural language than traditional logical systems. During the past several years, fuzzy control has emerged as one of the most active and fruitful areas for research in the applications of fuzzy set theory, especially in the realm of industrial processes, which do not lend themselves to control by conventional methods because of a lack of quantitative data regarding the input-output relations. The fuzzy logic controller (FLC) based on fuzzy logic provides a means of converting a linguistic control strategy based on expert knowledge into an automatic control strategy. Fuzzy Logic controller has better stability, small overshoot, and fast response. In this Paper, performance analysis of the conventional PID controller and fuzzy logic controller has been done by the use of Matlab and Simulink and in the end comparison of various time domain parameters is done to prove that the fuzzy logic controller has small overshoot and fast response as compared to PID controller.
Keywords: Flow control, Conventional control, Fuzzy logic control, Simulink.