Design and Analysis of Prediction based Control System for pH Neutralization Process of Sugar Mill

In sugar mill, the primary juice, acquired by crushing of raw sugarcane, is extremely impure. So, before sending it to undergo crystallization, it is clarified and filtered. In this process, its pH value is neutralized. The theme of this research paper is the pH control of the crushed sugarcane juice. The technique adopted for control is a prediction based modern digital control technique named Model Predictive Control (MPC). The MPC control system is designed in MATLAB for the pH neutralization process, and its control performance is compared with PID controller. Further, the impact of variation in the prediction horizon and the control horizon parameters of MPC, on reference tracking and disturbance rejection, are examined.