Model reference adaptive control (MRAC) without integral for glycerin bleaching process

This paper presents the design of a model reference adaptive control (MRAC) for regulating temperature for glycerin bleaching process. Two well known MRAC designs which are MIT and Lyapunov approach are considered. The model of the system is developed based on Auto-Regressive with Exogenous Input (ARX) model. To prevent MRAC from windup problem and to provide robust performance simple modification has been proposed which by removing the pure integral from the original adaptation laws of MRAC. The simulation results shown that the proposed approach was significantly improved the performance MRAC and provide robust performance in regulating temperature for glycerin bleaching process. The result also shows that there is no significant difference performance between modified MIT MRAC and modified Lyapunov MRAC.