Performances Comparison between Real-Time Auto-Tuning PID and Conventional PID Controller for a Dairy Industrial Evaporation Process Control

Qing-bo MENG, Hong-wei ZHANG, Martin HOWARTH


In this study, an industrial milk evaporation process is introduced and a mathematical model of a multi-effect falling film evaporator is developed using MATLAB/Simulink to evaluate the performance of the controller. A real-time closed-loop auto-tuning PID controller is presented as a candidate control strategy for the evaporation process. The simulation results controlled by autotuning and conventional PID are compared and discussed and the performance improvement by the auto-tuning PID controller is illustrated.


Three-effect falling film evaporator, Modeling, Conventional PID control, Auto-tuning PID control, Simulation


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