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Attack Detection and Identification in Cyber-Physical Systems – Part II: Centralized and Distributed Monitor Design

Author(s):

F. Pasqualetti, F. Dörfler, F. Bullo
Conference/Journal:

Abstract:

Cyber-physical systems integrate computation, communication, and physical capabilities to interact with the physical world and humans. Besides failures of components, cyberphysical systems are prone to malicious attacks so that specific analysis tools and monitoring mechanisms need to be developed to enforce system security and reliability. This paper builds upon the results presented in our companion paper [1] and proposes centralized and distributed monitors for attack detection and identification. First, we design optimal centralized attack detection and identification monitors. Optimality refers to the ability of detecting (respectively identifying) every detectable (respectively identifiable) attack. Second, we design an optimal distributed attack detection filter based upon a waveform relaxation technique. Third, we show that the attack identification problem is computationally hard, and we design a sub-optimal distributed attack identification procedure with performance guarantees. Finally, we illustrate the robustness of our monitors to system noise and unmodeled dynamics through a simulation study.

Year:

2012
Type of Publication:

(15)Miscellaneous
Supervisor:



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% Autogenerated BibTeX entry
@Misc { PasD_r:2012:IFA_4950,
    author={F. Pasqualetti and F. D{\"o}rfler and F. Bullo},
    title={{Attack Detection and Identification in Cyber-Physical
	  Systems – Part II: Centralized and Distributed Monitor
	  Design}},
    month=feb,
    year={2012},
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=4950}
}
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