Simplified Decoupler Based Fractional Order PID Controller for Two Variable Fractional Order Process

Abstract

In recent years, more research work has been proved the advantages of using fractional order modeling and control techniques. This paper describes the design of fractional order proportional integral derivative (FO-PID) controller along with simplified decoupling method of two variable fractional order processes. The structure of two variable processes is different from single variable process. The interaction effects occur for two variable fractional order processes. So to reduce the interaction effect, the process is decoupled by simplified decoupling method. The maximum sensitivity based frequency domain strategy is suitable for parameters tuning of FO-PID controller. The described controller yield better execution for set point-tracking. Disturbances like white noise are included in the system so as to exhibit the FO-PID method shows better result in rejection of disturbance. The parameter uncertainties are added to the process. The course of action is more robust to such dissimilarities. Simulation results will exhibit the better achievement of the proposed method.