| 摘要: |
| 为解决由多个被控对象组成的工业信息物理系统(ICPS)在拒绝服务(DoS)攻击和不确定外界扰动下的一致性控制问题,将多智能体和ICPS相结合,并基于状态观测器和零和博弈方法,设计最优H∞一致控制器。首先,针对多个被控对象组成的ICPS,根据智能体的信息交互特性,构建固定拓扑结构的多智能体ICPS模型。其次,考虑DoS攻击作用在传感器通道和执行器通道时系统通信信道堵塞的影响,采用状态观测器重构被堵塞的状态信息,并构建DoS攻击下基于状态观测器的多智能体ICPS模型。然后,引入干扰抑制水平,并将控制器和干扰者视为零和博弈中的参与者,根据干扰抑制水平的优化目标和H∞性能条件,构建基于零和博弈的最优H∞设计框架。最后,通过对干扰抑制水平的约束,并求解满足H∞一致性的线性矩阵不等式,设计最优一致性控制器。采用4个不间断电源的控制问题作为仿真对象,Matlab仿真结果表明, 相比于未对状态重构和未对参数约束的设计方法,本设计方案可使得多智能体ICPS在双通道DoS攻击下达到一致的时间更短,且具有良好的相对稳定性。 |
| 关键词: 工业信息物理系统 多智能体 DoS攻击 零和博弈 干扰抑制水平 H∞一致性 |
| DOI：10.11918/202312061 |
| 分类号:TP273+.1 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(61373126); 中央高校基本科研业务费用专项资金(JUSRP51310A); 江苏省自然科学基金(BK20131107) |
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| Optimal consensus control of multi-agent ICPS under DoS attack |
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SUN Ziwen1,2,ZHAI Runhua1
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(1.School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China; 2.Engineering Research Center of Internet of Things Technology Applications Ministry of Education, Jiangnan University, Wuxi 214122, Jiangsu, China)
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| Abstract: |
| To solve the problem of consensus control of industrial cyber-physical systems (ICPS) composed of multiple controlled objects under denial of service (DoS) attack and uncertain external disturbance, optimal H∞ consensus controller is designed by combining multi-agent with ICPS and employing state observer and zero-sum game methods. Firstly, for the ICPS composed of multiple controlled objects, a fixed topology multi-agent ICPS model is constructed based on the information interaction characteristics of agents. Secondly, considering the effects of DoS attacks causing communication channel blockages when acting on sensor channels and actuator channels, the state observer is used to reconstruct the blocked state information, and the multi-agent ICPS model under DoS attack based on the state observer is constructed. Then, the interference suppression level is introduced, and the controller and the disturber are considered as participants in a zero-sum game. Based on the optimization objective of interference suppression level and the condition of system H∞ performance, an optimal design framework based on zero-sum game is constructed. Finally, by imposing constraints on disturbance suppression levels and solving linear matrix inequalities that satisfy H∞ consensus, an optimal consensus controller is designed. Using the control problem of four uninterruptible power supplies as a simulation object, Matlab simulation results demonstrate that compared to design methods without state reconstruction and parameter constraints, the proposed approach achieves shorter consensus time for multi-agent ICPS under dual-channel DoS attacks and exhibits good relative stability. |
| Key words: industrial cyber-physical systems(ICPS) multi-agent DoS attack zero-sum game interference suppression level H∞consensus |
