文章基本信息

标题：Disruption via Grounding and Countermeasures in Discrete-Time Consensus Networks ⁎
本地全文：下载
作者：Yamin Yan ; Sonja Stüdli ; Maria M. Seron 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2020
卷号：53
期号：2
页码：2944-2950
DOI：10.1016/j.ifacol.2020.12.970
语种：English
出版社：Elsevier
摘要：AbstractWe investigate the disruption of discrete-time consensus problems via grounding. Loosely speaking, grounding a network occurs if the state of one agent no longer responds to inputs from other agents and/or changes its dynamics. Then, the agent becomes a leader or a so-called stubborn agent. The disruption of the agent can be caused by internal faults, safety protocols or externally due to a malicious attack. In this paper we investigate how the grounding affects the eigenratio of expander graph families that usually exhibit good scaling properties with increasing network size. It is shown that the algebraic connectivity and eigenratio of the network decrease due to the grounding causing the performance and scalability of the network to deteriorate, even to the point of losing consensusability. We then present countermeasures to such disruptions in both passive and active manners. Our findings are supported by numerical simulations given within the paper.
关键词：KeywordsGroundingdiscrete-time systemsscalabilityconsensusabilityconsensus performance