Deng Chao, Wen Changyun
IEEE Trans Cybern. 2021 May;51(5):2347-2358. doi: 10.1109/TCYB.2020.2972686. Epub 2021 Apr 15.
In this article, we investigate the distributed resilient control problem for a class of cyber-physical systems with communication delays under denial-of-service (DoS) attacks. In contrast to the previous DoS attacks results based on multiagent systems (MASs), a new distributed resilient control approach is proposed for more general heterogeneous linear MASs with nonuniform communication delays. Two types of sampled-based observers are, respectively, proposed. Namely, adaptive distributed observers are designed by introducing a buffer mechanism to eliminate the heterogeneous behavior caused by communication delays while adaptive distributed resilient observers are designed by introducing resilient mechanisms to resist the DoS attacks. Furthermore, a time-varying sampling period sequence is provided to prevent the attacker from identifying the sampling period of the system. Based on the developed resilient observers, a controller is developed. It is proved that the considered problem can be solved by the developed method. Finally, a numerical example is given to illustrate the effectiveness of the obtained result.
在本文中，我们研究了一类在拒绝服务（DoS）攻击下具有通信延迟的网络物理系统的分布式弹性控制问题。与先前基于多智能体系统（MAS）的DoS攻击结果不同，本文针对具有非均匀通信延迟的更一般异构线性MAS提出了一种新的分布式弹性控制方法。分别提出了两种基于采样的观测器。具体而言，通过引入缓冲机制来消除通信延迟引起的异构行为，设计了自适应分布式观测器；而通过引入弹性机制来抵御DoS攻击，设计了自适应分布式弹性观测器。此外，还提供了一个时变采样周期序列，以防止攻击者识别系统的采样周期。基于所开发的弹性观测器，设计了一个控制器。结果表明，所提出的方法能够解决所考虑的问题。最后，给出了一个数值例子来说明所得结果的有效性。
