Decentralized Adaptive Control for Interconnected Cyber-Physical Systems under Coordinated Attacks
Decentralized Adaptive Control for Interconnected Cyber-Physical Systems under Coordinated Attacks
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DOI：
10.1109/cdc51059.2022.9992599
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发表时间：
2022-12
期刊：
影响因子：
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通讯作者：
Kaiwen Chen;A. Astolfi;T. Parisini
中科院分区：
文献类型：
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作者：
Kaiwen Chen;A. Astolfi;T. Parisini
本文介绍了一种针对网络物理系统在传感器和协调执行器攻击下的分散自适应控制方案。首先，研究了一个简化模型，其中每个节点系统是隔离的。提出了一种具有非自适应线性分量和自适应非线性分量的部分自适应控制器，保证了系统轨迹的有界性和状态的渐近调节。在此基础上，研究了执行器协同攻击下的整个网络系统，提出了一种分散的全自适应控制器。通过将完全自适应控制器和部分自适应控制器联合放置，根据所谓底层图的反馈顶点集，可以保证整个网络简化模型的有界性和收敛性。最后给出了多级配水系统的仿真实例。结果表明，所提出的控制器保证了闭环网络系统对传感器和协调执行器攻击的鲁棒性，并能够将暂态性能恢复到无攻击情况下的状态。
This paper introduces a decentralized adaptive control scheme for networks of cyber-physical systems under sensor and coordinated actuator attacks. First, a simplified model, in which each node system is isolated, is studied. A partially adaptive controller with a non-adaptive linear component and an adaptive nonlinear component is proposed: this guarantees bounded system trajectories and asymptotic regulation of the state. Then, the whole network system under coordinated actuator attacks is studied and a decentralized fully adaptive controller is proposed. By jointly placing the fully adaptive controller and the partially adaptive controller, according to the so-called feedback vertex set of the underlying graph, boundedness and convergence properties of the simplified model can be guaranteed for the entire network. Finally, a simulation example for a multi-stage water distribution system is presented. The results show that the proposed controller guarantees robustness of the closed-loop network system against sensor and coordinated actuator attacks and it is capable of restoring the transient performance to that of the attack-free case.