Periodic event-triggered output feedback regulation for feedforward nonlinear systems with unknown measurement sensitivity

This article addresses the global regulation by periodic event-triggered output feedback control for a class of feedforward nonlinear systems. Particularly, the considered systems suffer from parameter uncertainties and unknown measurement sensitivity, which entail integrating advanced compensation strategies within the event-triggered framework. To this end, a time-varying gain is devised to tackle uncertain nonlinearities as well as the sampling error. Subsequently, a novel periodic event-triggered output feedback controller is constructed based on the delicate choice of design parameters. Notably, the proposed control scheme is able to avoid the continuous monitoring of the system behavior, and guarantee that all closed-loop system states are globally bounded and ultimately converge to zero. Finally, a practical example is given to illustrate the main results.