This paper is concerned with reliable control problems of cyber-physical systems against a class of frequency-constrained sensor and actuator attacks. We consider a continuous-time linear physical system equipped with an observer-based abnormal detector, and it is assumed that control signals and partial sensor outputs transmitted via network layers are vulnerable to cyber attacks. With the use of detection mechanisms of the abnormal monitor, an upper bound of the worst stealthy attacks is obtained, which is composed of the information of the detector’s threshold, the attack’s structure, and frequency characteristic. By exploiting the bound information, a novel attack compensator, which can stabilize the system with a nearly desired system performance, is proposed for a situation where an attack may occur without triggering an alarm. Finally, the effectiveness of the proposed control policy is verified by a numerical example.

中文翻译：

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针对一类频率受限的传感器和执行器攻击的网络物理系统的可靠控制策略

本文涉及针对一类频率受限的传感器和执行器攻击的电子物理系统的可靠控制问题。我们考虑一个连续时间的线性物理系统，该系统配备了基于观察者的异常检测器，并假设通过网络层传输的控制信号和部分传感器输出容易受到网络攻击。通过使用异常监视器的检测机制，可以获得最严重的隐身攻击的上限，该上限由检测器的阈值，攻击的结构和频率特性的信息组成。通过利用绑定的信息，提出了一种新颖的攻击补偿器，该补偿器可以在几乎不触发警报的情况下发生攻击的情况下，以接近期望的系统性能来稳定系统。最后，