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arXiv 1504.07586eess.SYcs.SY
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双速率控制用于网络物理系统中的安全性

Dual Rate Control for Security in Cyber-physical Systems

University of Illinois(伊利诺伊大学)

Mohammad Naghnaeian, Nabil Hirzallah, Petros G. Voulgaris

AI总结:

本文研究了反馈系统中传感器和执行器的恶意攻击,提出双速率控制器能确保所有攻击可检测,通过快速采样输出提升性能。

摘要:

我们考虑了反馈系统中执行器和传感器的恶意攻击,这些攻击可以建模为数字部分反馈回路中的加性、可能无界的扰动。我们精确地刻画了系统不稳定极点和零点在检测隐秘攻击能力中的作用,特别是在采样数据控制器的采样实现中。我们证明,如果存在一个保证安全的传感器,并且该传感器能从系统中观测到,则存在一类多速率采样数据控制器,确保所有攻击都可检测。这些双速率控制器以比零阶保持器处理控制输入的速率更快的速度采样输出,因此即使以更高的连续输出采样率为代价,它们也能提供比单速率更好的名义性能。

英文摘要:

We consider malicious attacks on actuators and sensors of a feedback system which can be modeled as additive, possibly unbounded, disturbances at the digital (cyber) part of the feedback loop. We precisely characterize the role of the unstable poles and zeros of the system in the ability to detect stealthy attacks in the context of the sampled data implementation of the controller in feedback with the continuous (physical) plant. We show that, if there is a single sensor that is guaranteed to be secure and the plant is observable from that sensor, then there exist a class of multirate sampled data controllers that ensure that all attacks remain detectable. These dual rate controllers are sampling the output faster than the zero order hold rate that operates on the control input and as such, they can even provide better nominal performance than single rate, at the price of higher sampling of the continuous output.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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