Attack detection and security state estimation of cyber-physical systems

被引：0
|
作者：
Gao Y. [1 ]
Ren W. [1 ,3 ]
Wu R. [1 ]
Wang W. [2 ]
Yi S. [1 ]
Han B. [2 ]
机构：
[1] China Information Technology Security Evaluation Center, Beijing
[2] School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing
[3] College of Electronics and Information Engineering, Sichuan University, Chengdu
来源：
Qinghua Daxue Xuebao/Journal of Tsinghua University | 2021年 / 61卷 / 11期
关键词：
Abnormal state detection; Cyber-physical systems; Detector; Observer; Safe state estimation;
D O I：
10.16511/j.cnki.qhdxxb.2021.21.008
中图分类号：
学科分类号：
摘要：
In the Industry 4.0 context, cyber-physical systems (CPS) need effective security and control capabilities. This study analyzes attack detection and security state estimation based on a cyber-physical system model attacked by an actuator. The attack detection uses a finite time attack detector that ensures that existing attacks can be accurately detected within a preset time limit. An observer is then designed to estimate the system state. A theoretical analysis shows that the observer ensures that the system can immediately adjust when attacked and that the system will reach a safe, stable state. Simulations verify the effectiveness of this method. © 2021, Tsinghua University Press. All right reserved.
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页码：1234 / 1239
页数：5
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