Design of internal model controller for a heat exchanger system

Heat exchanger is a device that exchange the heat between two fluids of different temperatures that are separated by a solid wall. The temperature gradient or the differences in temperature facilitate this transfer of heat. In General, temperature control system has the characteristics of non-linearity, large inertia and time variability. It is difficult to overcome the effects of these factors and get the satisfactory results by using the normal PID controller. Therefore, a controllers are implemented in this paper based on comparative analysis to control the output temperature of the heat exchanger system. The PID, FUZZY and IMC are the controllers used for the comparison and based on their overshoot and settling time the conclusions are given using simulation results. In addition to that FOPID controller will be implemented in this paper later for better effective temperature control over other controllers.