Distributed event‐triggered state estimators design for sensor networked systems with deception attacks

Abstract

This study addresses the issue of distributed event-triggered H ∞ state estimators subject to deception attacks for sensor networked systems. A decentralised event-triggered scheme (ETS) is introduced to determine whether the sampling data of each sensor is transmitted or not, respectively. In this scheme, each sensor node is independent to decide to deliver the local measurement output through the corresponding ETS. Due to the insertion of the network, the effect of the deception attacks along with time delay and packet dropouts are considered in this study. A novel estimator network is established to realise the estimation of the decoupling output measurements and coupling intercommunication measurements. Firstly, a distributed event-triggered H ∞ estimating system with deception attacks is constructed in a mathematical model. Secondly, sufficient conditions are derived, which can ensure the stability of the designed H ∞ estimating error systems and the related parameters of the desired distributed estimators are presented in an accurate form. Finally, a simulated example is given to demonstrate the effectiveness of the designed event-triggered distributed H ∞ state estimator systems under the deception attacks.