Sampled-data control of a class of uncertain switched nonlinear systems in nonstrict-feedback form

This paper investigates the stabilization problem of sampled-data output feedback for a class of uncertain switched nonlinear systems in nonstrict-feedback form. An observer is designed to estimate the unmeasured states, and a sampled-data controller is obtained by discretizing the virtual controller that is constructed via the dynamic surface control method. It is proved that the designed sampled-data controller can render all states of the resulting closed-loop system to converge to a neighborhood of the origin for the arbitrary switching signal, and an allowable sampling period is also given. Finally, 2 examples are presented to illustrate the effectiveness of the proposed method.