QFT Based Control for Twin Rotor MIMO System

This paper introduces a methodology to design quantitative feedback theory (QFT) robust controller for twin rotor multiple input-multiple output (MIMO) system. This approach has been considered in order to assure high control performance of the system. The QFT controller is used to design a simple, low order and robust position control for twin rotor MIMO system. Further the QFT controller is designed to give a robust stability and performance (disturbance rejection, reference tracking) with the presence of system parametric and non-parametric uncertainty. The robust stability and performance analysis has been done with unstructured model.