Internal Model Control Design and Performance Analysis of
SISO and MIMO Systems

Abstract

In this thesis comparative analysis of One-degree of freedom and two-degree of freedom Internal Model Control has been discussed. A design method for both One-degree of freedom and twodegree of freedom Internal Model Control systems has been discussed with ideal models and the results are compared. Cascade IMC controller is also designed for ideal models and the results are compared with PID controller.
Different control strategies are developed for both top and bottom product of Single Input Single Output binary distillation column and the results of controller outputs are compared. Classical Wood and Berry model has been considered as the model of distillation column and the controller is designed considering a non-interacting process. Comparison of time domain specifications of different controllers such as Internal Model Control, Lead-lag based IMC, Smith Predictor based IMC and Feed-forward based IMC has been carried out in this thesis. Setpoint tracking and disturbance rejection property of controller is evaluated.
Performance analysis of Multi Input Multi Output systems is also carried out in this thesis. The general pairing problem in MIMO systems and decoupler designing is also discussed here. MATLAB & Simulink software is used for the SISO systems and for MIMO IMC design LabVIEW Software is used.