ROBUST CONTROL USING H INFINITY TECHNIQUE FOR UNCERTAIN SYSTEM

Abstract

The main objective of this work is to design an Hoo optimal controller for very essential applications in electrical circuits, i.e., DC-DC buck converter in the presence of the system uncertainties, parameter variations and disturbance. Here, Hoo method is applied to DC-DC buck converter circuit for robust control against parameter variation and disturbance. . Hoo control method is a systematic and allows one to deal with model uncertainty, directly which is not possible in classical control. Therefore this work emphasis to give a clear understanding of the working procedure and how to apply it to practical problems like DC-DC buck converter. The model with its robust controller is simulated in MATLAB to verify its performance.