Attack-free protocols design for leader-following consensus of discrete-time multi-agent systems with multiple input delays

Lixuan Zhang, Kai Zhang and Huaiyuan Jiang

International Journal of Systems Science, 2024, vol. 55, issue 3, 407-425

Abstract: The consensus problem for leader-following multi-agent systems (MASs) characterised by discrete-time multiple input delays linear systems with directed communication topologies is investigated. Under reasonable assumptions, full-order observer-based output feedback protocols are first established by using the relative outputs and inputs of neighbouring agents. In order to overcome the impact of potential network attacks, we truncate the relative inputs of the proposed protocols, namely the exchange of communication information between neighbouring agents is forbidden, so that the closed-loop leader-following MAS is inherently immune to being attacked and achieves consensus. Additionally, the improved attack-free protocols not only allow arbitrarily large yet bounded delays, but also only relative output measurement can be available, which reduces the communication burden and thus are easy to implement in practice. A numerical example is worked out to illustrate the effectiveness of the proposed approach.

Date: 2024
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DOI: 10.1080/00207721.2023.2272301

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