Heat exchanger plays a important role in many unitsas they have the capability to hold different temperarure and pressure range. In this paper the linear quadratic controller and Dynamic matrix controller is implemented for heat exchanger system. The out let temperature of the tube is controlled by monitoring the inlet flow rate by using different controllers. The model of the system has been obtained from experimental data using system identification technique. The LQR and DMC is compared by analyze the servo performance in the system in terms of settling time, overshoot and rise time.
The head box in a paper machine is a critical component. Head box control is required for quality paper formation. Stock level and Total pressure in the paper machine head box determines the quality of the paper. This paper determines the design of PID controller for the pressure type head box. The stock level and pressure are the parameters taken into consideration.
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