Secure State Estimation With Switched Compensation Mechanism Against DoS Attacks

This article is concerned with the secure state estimation problem for cyber-physical systems under intermittent denial-of-service (DoS) attacks. Based on a switching scheme and the cascade observer technique, a novel resilient state observer with a switched compensation mechanism is designed. Moreo...

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Veröffentlicht in:IEEE transactions on cybernetics Jg. 52; H. 9; S. 9609 - 9620
Hauptverfasser: Yan, Jing-Jing, Yang, Guang-Hong
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States IEEE 01.09.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Cascade observer
Compensation
Computer crime
Convergence
Cyber-physical systems
cyber-physical systems (CPSs)
Denial of service attacks
denial-of-service (DoS) attacks
Denial-of-service attack
Design parameters
Errors
Observers
Resilience
secure state estimation
Security
State estimation
State observers
switched algorithm
switched compensation mechanism
Switches
Symmetric matrices
Wireless communication
ISSN:2168-2267, 2168-2275, 2168-2275
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Zusammenfassung:This article is concerned with the secure state estimation problem for cyber-physical systems under intermittent denial-of-service (DoS) attacks. Based on a switching scheme and the cascade observer technique, a novel resilient state observer with a switched compensation mechanism is designed. Moreover, a quantitative relationship between the resilience against DoS attacks and the design parameters is revealed. Compared with the existing results, where only the boundedness of the estimation error is guaranteed under DoS attacks, the exponential convergence of the estimation error is achieved by employing the proposed observer scheme, such that the estimation performance is improved. More specifically, in the disturbance-free case, it is proven that the state estimation error converges exponentially to 0 despite the existence of DoS attacks. Finally, simulation results are provided to illustrate the effectiveness and merits of the proposed methods.
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ISSN:2168-2267
2168-2275
2168-2275
DOI:10.1109/TCYB.2021.3060743