Identification and Study of Performance of Controllers on Heat Exchanger

Abstract

This work is concerned with the identification of transfer function models for heat exchanger using system identification by selecting linear parametric models ARX, ARMAX, and according to the process requirement product temperature of the heat exchanger system has to be maintain at a desired set point. For this, firstly some conventional controllers like standard PID, Feed Forward with the feedback PID, IMC, and internal model based PID controllers were used. For the design of Feed Forward controller considered the disturbances as variation of the input flow. Due to some lower performance specifications and slow response time of conventional control techniques, intelligent controllers like fuzzy PID controller and FOPID controller using PSO algorithm are developed. These intelligent controllers maintains the temperature of the outlet fluid at a desired set point in the shortest possible time regardless of process disturbances, load, device saturation and nonlinearity.