A STUDY ON THE APPLICATION OF ROBUST PID CONTROLLER TO THE STABILITY FOR TEMPERATURE CONTROL OF HEAT EXCHANGER DEVICES

Abstract

Nowadays, heat exchanger devices are widely used in factories. The main task of a heat exchanger device is to transfer heat from hot gas to cool fluid for condensation. To control the temperature of outlet fluid of heat exchanger devices, the conventional PID controller can be used. However, these controllers are not optimal or less robust with the variation of parameters in operation. This paper presents a design method of robust PID controllers in order to stablize the temperature of the outgoing fluid to a desired set point in the shortest possible time of the heat exchanger devices. The PID controllers are designed to select from the methods: Tyreus - Luyben, based on the Internal Model Control (IMC), Smith predictor algorithms and the PID fuzzy controller. The simulation results show that the overshoot of control signals of the PID fuzzy and Smith predictor algorithms are zero and erroneous tracking system toward zero..