Adaptive output feedback control for high-order nonlinear systems via an event-triggered strategy

Abstract

This paper investigates the problem of adaptive event-triggered output feedback control for a class of high-order nonlinear systems with unknown homogeneous growth rate. Based on adding a power integrator technique, a homogeneous output feedback controller is designed first for the nominal systems. Then, a dynamic gain is introduced to the observer and controller, under which a novel adaptive event-triggered output feedback controller is constructed to guarantee that all the signals of the closed-loop system are bounded and the states can converge to a neighbourhood of origin. Meanwhile, it is proved that the event-triggered control system is the Zeno-free. Finally, a numerical example is given to illustrate the effectiveness of the proposed control strategy.