For the temperature control problem with time delay and large inertia heat exchanger

the design is based on the extended state observer (ESO) dynamic surface controller. The heat exchanger temperature control is a nonlinear

time-varying and uncertain dynamic process. Firstly

an extended state observer is designed to obtain the immeasurable state and dynamics of the system in real time. Secondly

dynamic surface control is used to achieve accurate and fast tracking of temperature. Then Lyapunov function was used to prove the stability of the control system. Finally

the simulation results show that the dynamic surface control method based on ESO has superior control effect and robust performance by compared the classical PID control method and the dynamic matrix control method. The proposed method has better dynamic response performance when the controlled system set point and disturbances change.