Design of Multi-Loop Controller for Minimization of Energy Consumption in the Distillation Column

Bhat, Vinayambika S and Shanmugapriya, S and Thirunavukkarasu, I and Bhat, Shreeranga (2016) Design of Multi-Loop Controller for Minimization of Energy Consumption in the Distillation Column. In: International conference on Information and Communication Engineering, 19/09/2016, Chicago, USA.

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An attempt has been made to design a decoupling controller for the systems with Multi Input Multi Output (MIMO) with dead time. The decoupler is designed for the 3× 3 plant transfer function of the chemical process industry with the dead time. The Quantitative Feedback Theory (QFT) based controller has also been designed here for the 2×2 distillation column transfer function. The developed control techniques were simulated by using the MATLAB/Simulink software. Also, the stability of the process was analyzed, together with the presence of various perturbations. Time domain specifications like setting time along with overshoot and oscillations were analyzed to prove the efficiency of the decoupler method. The load disturbance rejection was tested. The QFT control technique was synthesized based on the stability and performance specifications in the presence of uncertainty in time constant of the plant transfer function through the sequential loop shaping technique. Further, the energy efficiency of the distillation column was improved by tuning the controller properly. A distillation column consumes 3% of the total energy of the world. A suitable control technique is very important from an economic point of view. The real time implementation of the process is still being studied in our laboratory.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Distillation, energy, MIMO process, time delay, robust stability.
Subjects: Engineering > MIT Manipal > Chemical
Engineering > MIT Manipal > Instrumentation and Control
Depositing User: MIT Library
Date Deposited: 07 Oct 2016 16:00
Last Modified: 07 Oct 2016 16:00

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