持续DoS攻击下多智能体系统基于观测器的一致性研究

Observer-Based Consensus for Multi-Agent Systems Subject to Consecutive DoS Attacks

针对状态不完全可测的多智能体系统,研究持续异步拒绝服务(Denial of Service,DoS)攻击下基于观测器的安全一致性控制问题.基于切换理论,将受到攻击的多智能体系统建模为满足持续驻留时间的切换系统.攻击睡眠阶段被认为是τ部分,其中通信网络中的领导者是全局可达的.攻击激活阶段看作T部分,持续有效的拒绝服务攻击能够破坏原始通讯网络的连通性.通过构造模型依赖Lyapunov函数并求解线性矩阵不等式,获得控制器和观测器增益以实现一致性跟踪.最后,仿真结果验证了所提方法的有效性.

The observer-based secure consensus control problem under consecutive asynchronous denial of service(DoS)attacks is studied for multi-agent systems with incompletely measurable states.Based on switching theory,the multi-agent system subject to attacks is modeled as switched system with persistent dwell time(PDT).The sleep phase of attack is considered to be the τ portion,in which the leader in the communication network is globally reachable.The activation phase of the attack can be regarded as T portion,where effective DoS attacks will destroy the connectivity of original communication network.By constructing model-dependent Lyapunov functions and solving linear matrix inequalities,the gains of controller and observer are obtained.Finally,simulation results verify the effectiveness of the proposed method.