DoS攻击下基于多率采样的多智能体系统安全一致性

本 文 研 究 了 一 类 带 有 多 率 采 样 的 线 性 多 智 能 体 系 统(Multiagent Systems, MASs)在 拒 绝 服 务(Denial-of-Service, DoS)攻击下的安全一致性控制问题, 其中DoS攻击通常阻断智能体之间的信息传输. 本文将多 率采样在网络化控制系统中的结果推广到了多智能体系统, 并考虑了非理想通信网络环境. 首先, 通过引入一个匹 配机制来同步由多率采样引起的智能体不同状态分量的采样数据. 然后, 在DoS攻击下, 针对带有多率采样的线 性MAS提出了一个基于多率采样的安全一致性控制器. 通过使用李雅普诺夫稳定性理论和切换系统方法, 获得了 包含DoS 攻击持续时间以及攻击频率的安全一致性充分条件. 最后, 给出了一个仿真例子来验证所提方法的有效 性, 并给出了多率采样与单率采样机制的性能对比分析.

Multi-rate Sampled-data Secure Consensus of Multi-Agent Systems Subject to DoS Attacks

This paper studies the secure consensus control problem for a class of linear multiagent systems (MASs) with a multi-rate sampling under denial-of-service (DoS) attacks, where DoS attacks usually prevent information transmission among agents. The results of the multi-rate sampling strategy in networked control systems are extended to MASs and a non-ideal communication network is considered in this paper. Firstly, a matching mechanism is introduced in order to synchronize the sampled data of different state components of agents caused by multi-rate sampling. Then, a multi-rate sampling based secure consensus controller is designed for linear MAS with a multi-rate sampling under DoS attacks. By using Lyapunov stability theory and switched system method, a sufficient condition with the DoS attack duration and frequency is obtained. Finally, a simulation example is presented to verify the effectiveness of the proposed method and exhibit the performance comparing analysis between the multi-rate sampling and single-rate sampling mechanism.