Design of closed loop control for disturbance rejection in oscillatory system based on PICS and Magnitude Optimum

Abstract

In practical applications, it is found that controlling oscillatory systems have relative problems as this type of systems often requires small overshoot and the smallest settling response time on a given input. The existing DRMO method has shown poor response in rejection of disturbances in oscillatory systems as, in such systems, even the smallest disturbance input can cause oscillations and may degrade the system response and also affect the transient parameters. In our work, we propose, the disturbance rejection on oscillatory processes in which the concept of PICS and Magnitude Optimum criteria is presented. Looking into the advantages of PICS, we propose PICS based DRMO for the lightly damped oscillatory systems. Simulations on several benchmark examples are done and the results are compared with the existing DRMO method.