MODEL PREDICTIVE CONTROL OF SUCROSE CRYSTALLIZATION PROCESS

Abstract

In this paper the application of model based predictive control to batch sucrose crystallization process in single effect evaporator or vacuum pan of sugar industry is undertaken. Based on model developed by the author, witch is non-linear and time variant, with two input variable (feeding liquor and vapour temperature in the pan calender) and an out put variable (super saturation of mother liquor), by simulation method a linear model based state variables is obtained. Using that model a predictor on mod format of MATLAB is developed to be used in the design of required MPC. By means of simulation method the adequate character of the model to real MISO systems, considering the super saturation of mother liquor, where the sugar crystal grows, and the average diameter of sugar crystal as out put variables is tested.