Event-/Self-Triggered Communication for DoS-Resilient Consensus in Multiagent Systems With Application to LEO Satellite Formation

This article focuses on the design and analysis of resilient leaderless consensus for multiagent systems exposed to distributed denial-of-service (DoS) attacks. Unlike most existing works that focus on undirected communication topologies and synchronized attacks affecting all links simultaneously, this work considers a more general scenario with directed communication graphs and distributed DoS attacks, where different communication channels can be disrupted independently. To address this challenge, a dynamic event-triggered communication scheme is incorporated into the consensus protocol, under which asymptotic consensus stability can be preserved despite distributed DoS disruptions. Information exchange is performed only at triggering instants, which effectively suppresses redundant transmissions and enhances communication efficiency. To further reduce computational burden and remove the requirement of continuous monitoring, a self-triggered communication scheme is introduced, in which each agent determines its next triggering instant solely based on the most recently available data. Rigorous analysis verifies that both the event-triggered and self-triggered schemes preclude Zeno behavior. In addition, numerical simulations of a low Earth orbit satellite formation demonstrate the efficacy and advantages of the developed control strategies.