Studying of The Dynamic Behaviour and Control of Continuous Distillation Column
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Abstract
The present work deals with studying the dynamic behaviour of continuous distillation tray
column and implementing different type of control strategies for the separation of binary
mixture composed of ethanol and water. Mathematical model of distillation column is derived
and designed by using Matlab program depending on the mathematical model derived to find
temperature response for many disturbances. The comparison between the experimental and
theoretical responses for temperature in top and bottom of distillation column for step change in
feed flow rate, reflux ratio and feed weight fraction showed that the difference is simple. This
study includes designing fuzzy logic controller which depending on some of logic rules
depending on fuzzy sets and through trading from experimental works where designing this
controller by using Matlab program and applying it on dynamics model for two control scheme
and tuning it by trial and error method. The Comparison between fuzzy logic and (PID) control
methods is done for many disturbances and measure the controller performance by using mean
square error and integral square error that the result performance showed that the fuzzy
controller better than the conventional controller through fast access to the desired value and
cancelling the disturbances.
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