Robust stabilization of interval plants by means of two feedback controllers

Abstract

The main aim of this paper is to present an approach for robust stabilization of interval plants by means of closed-loop control systems with two feedback controllers. The control synthesis is based on the polynomial technique and subsequent graphical robust stability analysis utilizes the combination of the value set concept with the zero exclusion condition. The presented set of examples for second and third order interval plants illustrates design and tuning of various controllers and elucidates investigation of robust stability through the graphical tests. Finally, the obtained results are confirmed by the control simulations. © 2015, North Atlantic University Union. All rights reserved.