Synchronous vs asynchronous switching-based output-feedback control for switched nonlinear systems with measurement noise sensitivity

Abstract

This paper investigates the problem of output-feedback control in the presence of measurement noise sensitivity for a class of switched nonlinear systems with unknown control coefficients under synchronous vs asynchronous switching. A constructive output-feedback control technique is provided by exploiting the dual-domination method and the average dwell time (ADT) method, which permits removal of a common restriction for output-feedback control in which the measurement sensitivity in switched systems is always a known constant. Also, output-feedback controllers of subsystems with a switched linear observer are designed to guarantee asymptotic stability of the closed-loop system under a class of switching signals with ADT, which effectively handle the influence of different sensor sensitivities for different subsystems in both synchronous vs asynchronous switching. Finally, simulation examples, including a mass–spring–damper mechanical system as a practical example, are given to illustrate the effectiveness of the technique proposed.