<![CDATA[In chemical industry, control system is one of the most important things to ensure production quality andsafety. In designing the control system, dynamics models in the form of transfer functions are required. In acomplex process the transfer functions are derived from black box models, in which the relationshipsbetween input and output variables are obtained from the dynamic data regression. One of the complexprocesses that can be found in the chemical industry is reactive distillation (RD). RD control system usuallytake the products compositions as controlled variable (CV) while manipulated variable or controller output(CO) are reboiler duty and reflux flow rate. This research aims to find the form of the transfer functionbetween CV and CO, as well as the values of the parameters of the transfer function. To achieve this goals,dynamic simulations of RD column was carried out by step test using Aspen Plus Dynamics. The result wasthen regressed to obtain the most appropriate transfer function. The chemical process that is applied in thecolumn RD is the production of 2-ethylhexyl-dodecanoate, a fatty acid ester which has a high economic valuefor it is widely used as raw materials of specialty chemical]]>
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