Robust output regulation for a flexible wing with external disturbances and input saturation

Abstract

This paper proposes observer based saturated controls to address the robust output regulation of a flexible wing system, which is closely coupled to an exosystem having unknown initial values and a known matrix. This makes the generated signals unknown, including disturbances and references. Two observer based tracking error feedback controls are proposed in the presence of input saturation. The closed-loop system is proved to be bounded and the convergence of the tracking errors is robust to all disturbances and references from the exosystem. Two simulation examples are compared to demonstrate the robust output regulation of the closed-loop system.