Indian Journal of Science and Technology, Vol 8(23), DOI: 10.17485/ijst/2015/v8i23/85351, September 2015 ISSN (Print) : 0974-6846 ISSN (Online) : 0974-5645 *Author for correspondence Comparative Analysis of PID and Fuzzy PID Controller Performance for Continuous Stirred Tank Heater V. Kabila 1 * and G. Glan Devadhas 2 1 Sun College of Engineering and Technology, Nagercoil, Kanyakumari – 629852, Tamil Nadu, India; pliseree@yahoo.in 2 Noorul Islam Centre for Higher Education, Kumaracoil, Kanyakumari – 629180, Tamil Nadu, India; glandeva@gmail.com Abstract Paper presents a parallel analysis of performance of PID (Proportional Integral and Derivative) controller and Fuzzy PID controller for control of CSTH (Continuous Stirred Tank Heater) Process. CSTH is one of the type of heater which operates at constant temperature. In Heater, a hot fluid is circulated through the jacket. Mass balance and Energy balance equations are used on the process, to develop a mathematical model. A mathematical description of Tank Heater is established and various types of controllers are implemented to it. To revise the performance of different control algorithms, using MATLAB, a simulation work is conceded to control the given process system. To analyze the response of diverse controllers, time domain specifications are used. To determine the entire knowledge about the process, A small literature survey about Tank Heater is premeditated. 1. Introduction A Chemical Industry contains processing units like reactors, heat exchangers, tanks, pumps etc. Te goal of process plant is to renovate basis materials into pre- ferred products. All the Equipments in chemical plant are intended for periodic inspection of working condition and disturbance to assure the fulfllment of aspiration. A Mathematical way of analysis of process is vital one to revise the act of various control algorithms. For modeling process, the basic amenities are Energy balance and Mate- rial balance principles. PID controller can be used to control the Laboratory Scale CSTH 1 . Methods used for designing PID controllers are Trial and Error and heuristic method. In 2 , for con- trol of CSTH, Model Predictive controller and PID based controllers are used. Finally the performance has been compared to maintain the tank temperature. In 3 , MRAC (Model Reference Adaptive control) has implemented for CSTH process using MIT Rule and Neural Networks. Tese two techniques are compared to produce desired output. In 4 , Diferent methods are put into action to control CSTH. Such as PID, adaptive and IMC based PID. To compare the performance of above three controllers, time integral performance criteria are calculated and analyzed. Implementation of Nonlinear model Predic- tive control using a MNN multiple neural networks is suggested for CSTH process. To construct MNNs, few methods were presented 5 . Simulation of an experimen- tal CSTH pilot plant has been labeled 6 . Te heat and volumetric balance principles are realized to design the Keywords: CSTH, Fuzzy Logic PID, Good Gain Method, PID Control