DoS攻击下一类二阶多智能体系统的安全分组一致性研究

针对拒绝服务(denial-of-service, DoS)攻击下一类二阶多智能体系统的安全分组一致性协同控制问题,区别于同类工作,在非周期性多信道独立的攻击场景下,基于复杂系统中智能体间的合作与竞争交互,提出一种新的带有状态估计器的安全分组一致性控制协议.在该协议的作用下,首先,给出DoS攻击持续时间的约束条件,通过设计合适的李雅普诺夫函数,结合求解代数黎卡提方程得到不同攻击模式下信道的衰减率;然后,通过引入与各个信道对应的等效衰减率,克服所得衰减率与信道难以匹配的问题,并给出系统的稳定性判据;最后,通过数值实验验证理论分析所得结论的正确性和有效性.

Security group consensus for second-order multi-agent systems with cooperative-competitive interactions subject to DoS attacks

This paper investigates the problem of security couple-group consensus for second-order multi-agent systems under DoS attacks. Different from the related studies, more complex non-periodic multi-channel independent DoS attacks are considered in our work. Comprehensively considering the cooperative and competitive interactions among the agents, a novel protocol with a state estimator for realizing security couple-group consensus is proposed. On basis of the protocol, the constraint condition for the duration of DoS attacks is given. Meanwhile, the decay rates under different attack modes are obtained by designing appropriate Lyapunov functions and solving the algebraic Riccati equations. To solve the problem that the decay rate is difficult to match with the channel, the equivalent decay rate corresponding to each channel is introduced. In addition, the stability criterion of the system is also given. Finally, several numerical simulations are designed to illustrate the correctness and effectiveness of the results.