Distributed event-triggered H∞ filtering over sensor networks with sensor saturations and cyber-attacks

Abstract

This paper investigates the problem of distributed event-triggered H_∞ filtering over sensor networks with sensor saturations and cyber-attacks. By taking the effects of sensor saturations existing in spatially distributed sensors and randomly occurring cyber-attacks into consideration, a distributed event-triggered filtering error system is firstly established. Then, sufficient conditions guaranteeing the system asymptotically stable with H_∞ performance are obtained by means of Lyapunov stability theory. Moreover, the explicit expressions of distributed H_∞ filters and the weighting matrices of distributed event-triggered scheme are achieved by solving a set of linear matrix inequalities (LMIs). Finally, two examples are given to illustrate the usefulness of the designed distributed event-triggered H_∞ filters.

Keywords: Cyber-attacks; Distributed H(∞) filtering; Event-triggered scheme; Sensor saturations.