Switching scheme based on ADT for packet dropout compensating

Abstract

This paper deals with the problem of compensating transmission error and packet dropout of networked control systems. A strategy of switching between an open-loop estimator and a closed-loop estimator is introduced to networked control systems. An average dwell time (ADT) scheme and piecewise Lyapunov function method are used to analyze stability of closed-loop system with transmission error and packet dropout. Given the maximal packet dropout rate, a sufficient condition for exponential stability under average dwell time is presented. An exponential decay degree and a lower bound of average dwell time are explicitly given. The method is extended to cope with networked control systems with nonlinear perturbations, and a robust stability condition is found.