Networked control systems under cyber attacks with applications to power networks
Networked control systems under cyber attacks with applications to power networks
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DOI：
10.1109/acc.2010.5530638
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发表时间：
2010-07
期刊：
影响因子：
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通讯作者：
André Teixeira;H. Sandberg;K. Johansson
中科院分区：
文献类型：
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作者：
André Teixeira;H. Sandberg;K. Johansson
分析了特定网络攻击下的网络控制系统。这些控制系统的通信网络使它们容易受到恶意外来者的攻击。我们的工作处理了两种类型的攻击：对网络节点的攻击和对节点之间通信的攻击。我们提出了一种使用观察者来检测和隔离攻击的分布式方案。此外，我们还讨论了如何在保持整个网络覆盖的同时减少观察节点的数量。将结果应用于两类网络控制系统：运行一致性协议的网络和由线性化的摆动方程定义的电力网络。对于第一类系统，给出了攻击检测方案存在的充分条件。对于第二类，我们给出了所提出的检测方案存在的必要条件。
Networked control systems under certain cyber attacks are analyzed. The communication network of these control systems make them vulnerable to attacks from malicious outsiders. Our work deals with two types of attacks: attacks on the network nodes and attacks on the communication between the nodes. We propose a distributed scheme to detect and isolate the attacks using observers. Furthermore, we discuss how to reduce the number of observer nodes while maintaining the coverage of the entire network. The results are applied to two classes of networked control systems: a network running the consensus protocol and a power network defined by the linearized swing equation. Sufficient conditions for the existence of the proposed attack detection scheme are provided for the first class of systems. For the second class, we provide a necessary condition for the existence of the proposed detection scheme.