Observer‐based event‐triggered H∞$$ {H}_{\infty } $$ control of networked switched systems under hybrid attacks

This article is concerned with the issue of observer‐based event‐triggered H∞$$ {H}_{\infty } $$ control for networked switched systems (NSSs) under hybrid attacks. Since hybrid attacks can cause more damage to the system than a single cyber attack, this article considers a situation where stochasti...

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Bibliographic Details
Published in:International journal of robust and nonlinear control Vol. 34; no. 11; pp. 7133 - 7160
Main Authors: Zhang, Zhigang, Liu, Jinhai, Zhang, Shuo, Zhu, Hongfei
Format: Journal Article
Language:English
Published: Bognor Regis Wiley Subscription Services, Inc 25.07.2024
Subjects:
Co-design
Control systems
Cybersecurity
deception attacks
Denial of service attacks
Design parameters
Dwell time
event‐triggered mechanism
H-infinity control
Hybrid systems
H∞$$ {H}_{\infty } $$ control
networked switched systems
Performance indices
Stability
Switching
ISSN:1049-8923, 1099-1239
Online Access:Get full text
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Summary:This article is concerned with the issue of observer‐based event‐triggered H∞$$ {H}_{\infty } $$ control for networked switched systems (NSSs) under hybrid attacks. Since hybrid attacks can cause more damage to the system than a single cyber attack, this article considers a situation where stochastic deception attacks and aperiodic denial‐of‐service (DoS) attacks coexist in NSSs. To address this issue, the dynamics of the initial switched system combined with the event‐triggered mechanism (ETM), observers and hybrid attacks are formulated as a new augmented switched system. Thereinto, the unmeasurable states are estimated by a newly constructed gain adjustable observer and an observer state‐based adaptive ETM is designed under DoS attacks to save limited communication resources. Then, employing the Lyapunov stability theory and average dwell time (ADT) approach, sufficient conditions are obtained to guarantee the mean‐square exponential stability with a H∞$$ {H}_{\infty } $$ performance index of the new model. And the quantitative relationship between the switching signal and DoS attacks is formulated. Moreover, a co‐design method of ETM parameters and observer‐based controller gains is proposed. Compared with some existent results, restrictions on DoS attack signals and switching signals are relaxed. Finally, a numerical example is utilized to verify the feasibility and effectiveness of the proposed theory.
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ISSN:1049-8923
1099-1239
DOI:10.1002/rnc.7337