Observer-Based Event-Triggering Consensus Control for Multiagent Systems With Lossy Sensors and Cyber-Attacks

Abstract

In this paper, the observer-based event-triggering consensus control problem is investigated for a class of discrete-time multiagent systems with lossy sensors and cyber-attacks. A novel distributed observer is proposed to estimate the relative full states and the estimated states are then used in the feedback protocol in order to achieve the overall consensus. An event-triggered mechanism with state-independent threshold is adopted to update the control input signals so as to reduce unnecessary data communications. The success ratio of the launched attacks is taken into account to reflect the probabilistic failures of the attacks passing through the protection devices subject to limited resources and network fluctuations. The purpose of the address problem is to design an observer-based distributed controller such that the closed-loop multiagent system achieves the prescribed consensus in spite of the lossy sensors and cyber-attacks. By making use of eigenvalues and eigenvectors of the Laplacian matrix, the closed-loop system is transformed into an easy-to-analyze setting and then a sufficient condition is derived to guarantee the desired consensus. Furthermore, the controller gain is obtained in terms of the solution to certain matrix inequality which is independent of the number of agents. An algorithm is provided to optimize the consensus bound. Finally, a simulation example is utilized to illustrate the usefulness of the proposed controller design scheme.

Event‐triggered finite‐time reliable control for nonhomogeneous Markovian jump systems

“…The effectiveness of the proposed event-triggered finite-time controller design method has been verified by a numerical example. To further improve the proposed approach reliability and safety in practical applications, especially in networked control systems 43,44 and multiagent systems, [45][46][47][48] the problems of fading channels, [49][50][51] packet dropouts, 52,53 multiple input channels, 54 and cyber attacks [55][56][57] will be considered in our further work.…”

A novel event‐triggered extended state observer for networked control systems subjected to external disturbances

“…To avoid possible network congestions, the event‐triggered scheme can be used, where the measurement signals are not updated periodically but only when some events occur . Up to date, some initial results have been reported in the literature concerning the NCSs with event‐triggered sampling schemes (see other works and the references therein).…”

“…1,5 To avoid possible network congestions, the event-triggered scheme can be used, where the measurement signals are not updated periodically but only when some events occur. [6][7][8] Up to date, some initial results have been reported in the literature concerning the NCSs with event-triggered sampling schemes (see other works [9][10][11] and the references therein). For instance, the event-triggered mechanism with state-independent threshold has been discussed to update the control input signals for multiagent systems in the work of Ding et al 6 Two event-based robust sampled-data model predictive control strategies have been proposed for continuous-time systems with disturbances.…”

“…[6][7][8] Up to date, some initial results have been reported in the literature concerning the NCSs with event-triggered sampling schemes (see other works [9][10][11] and the references therein). For instance, the event-triggered mechanism with state-independent threshold has been discussed to update the control input signals for multiagent systems in the work of Ding et al 6 Two event-based robust sampled-data model predictive control strategies have been proposed for continuous-time systems with disturbances. 12 A stochastic energy-dependent event-triggering transmission protocol has been proposed to balance the communication rate and estimation performance according to the battery energy of the sensor.…”

Robust finite-horizon filtering for nonlinear time-delay Markovian jump systems with weighted try-once-discard protocol

“…In recent years, networked systems have stirred much attention from both theoretical research and industrial CONTACT Lifeng Ma malifeng@njust.edu.cn application due to the advantages of low cost, wireless transmission and high reliability, and accordingly, the relevant control and filtering issues have become hot research directions (Chen, 1990;Ding, Wang, Ho, & Wei, 2017;Ding, Wang, Shen, & Dong, 2015b;Ding, Wang, Shen, & Wei, 2015;Ma, Wang, Lam, & Kyriakoulis, 2017;Shen, Wang, & Qiao, 2017;Yuan, Yuan, Wang, Guo, & Yang, 2017;Zhu, Hua, & Wang, 2008). In a networked system, the components (e.g.…”