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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...
Controlling slow dynamic process such as temperature for glycerin bleaching process is inherently difficult. This is due to the unfavorable characteristic of the system that possess nonlinearities caused by actuator constraint that will lead PID controller produces unsatisfactory performance due to windup phenomenon. This paper presents the implementation of the anti windup scheme on a PID controller...
Temperature plays a major role in determining the effectiveness of bleaching process. Poor temperature control will degrade the end product quality and this problem can be overcome by engaging a robust temperature control. However, since the nature of bleaching process possess large time delay and unknown dynamic variations or uncertainties, it is inherently difficult to design a good temperature...
Controlling a temperature for a large system is not an easy task, the lag is big and the overshoot is high. The conventional method of controlling this kind of process is not capable of giving satisfactory result. In this paper the implementation of Fuzzy Logic controller with Smith Predictor is an alternative to control this system. First order plus dead time model (FOPDT) is used for simulation...
This paper describes the development of Fuzzy Logic Controller (FLC) for a glycerin bleaching process based on simulation study. The first order plus dead time (FPODT) model of the glycerin bleaching temperature is obtained using open loop step test from a glycerin bleaching pilot plant. Fuzzy PI and Fuzzy PD controller was developed to replace the existing PID controller. The performances of the...
This paper describes the development of interfacing system for glycerin bleaching process. The system is used to monitor and control the temperature and pH of the glycerin. The methodology includes the development of a monitoring and control system based on the use of simple data acquisition hardware module and software tools. The system outlined permits the user to access sensors or control system...
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