Secure state estimation for cyber-physical systems with unknown input sliding mode observer
Panpan Zhang1
Yuwei Ren1
Yixian Fang2
Ang Liu1
1.School of Information Science and Engineering,Shandong Normal University,Jinan 250358,Shandong,China2.School of Information Engineering,Shandong Management University,Jinan 250357,Shandong,China
摘要：In recent years,cyber attacks have posed great challenges to the development of cyber-physical systems.It is of great significance to study secure state estimation methods to ensure the safe and stable operation of the system.This paper proposes a secure state estimation for multi-input and multi-output continuous-time linear cyber-physical systems with sparse actuator and sensor attacks.First,for sparse sensor attacks,we propose an adaptive switching mechanism to mitigate the impact of sparse sensor attacks by filtering out their attack modes.Second,an unknown input sliding mode observer is designed to not only observe the system states,sensor attack signals,and measurement noise present in the system but also counteract the effects of sparse actuator attacks through an unknown input matrix.Finally,for the design of an unknown input sliding mode state observer,the feasibility of the observing system is demonstrated by means of Lyapunov functions.Additionally,simulation experiments are conducted to show the effectiveness of this method.
机标关键词：observersystemssecurestateinputmodewithcyber-physical
论文发表日期：2024-05-05
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：10( 244-253 )
英文信息