Process modelling and control of isoamyl acetate synthesis in microreactor using matlab simulink
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Date
2018-06
Authors
Elysia Chiang, Chern Yuen
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Abstract
Isoamyl acetate is an ester that exhibits banana-like flavour. As demand for food
flavour industry and banana flavouring have risen this recent years, enzymatic
esterification has been found to be a natural-labelled alternative to produce isoamyl
acetate. Continuous process based on microreactor technology has been given focus in
biochemical process as they offer a less wasteful process compared to traditional
methods. The objective of this study is to develop a control strategy to optimize the ester
yield by using step test, Ziegler Nichols and Cohen-Coon methods. Before process
control was carried out, the process model from MATLAB script was translated into
Simulink blocks. Simulation was carried out in MATLAB Simulink and the proposed
model was validated with experimental work and previous simulation result using
EXCEL Solver. PID with P, I and D values of 6.8, 0.56 and 0.14 respectively were found
to be the best controller in term of performance criteria such as overshoot, rise time,
time to first peak, settling time, decay ratio and response curve.