System Identification and ℋ∞ Controller Design for Heat Exchanger System

Abstract

This paper is intended to present the complete system identification from experimental design to model validation for a liquid-liquid heat exchanger. Due to complexity of first principles-modeling technique, mathematical model has been obtained by using system identification technique. Robust ℋ∞ controller has been designed for the identified model of heat exchanger using ℋ∞ synthesis. A comparison with conventional PID control with the robust controller shows the better performance of the robust control especially in case when the controlled process is affected by some sort of uncertainties.