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Stealthy Adversaries Against Uncertain Cyber-Physical Systems: Threat of Robust Zero-Dynamics Attack
Korea Inst Sci & Technol, Ctr Intelligent & Interact Robot, Seoul 136791, South Korea..
Hyundai Motor Co, Res & Dev Div, Gyeonggi Do 18280, South Korea..
Seoul Natl Univ, Dept Elect & Comp Engn, ASRI, Seoul 08826, South Korea..
Daegu Gyeongbuk Inst Sci & Technol, Dept Informat & Commun Engn, Daegu 47988, South Korea..
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2019 (English)In: IEEE Transactions on Automatic Control, ISSN 0018-9286, E-ISSN 1558-2523, Vol. 64, no 12, p. 4907-4919Article in journal (Refereed) Published
Abstract [en]

In this paper, we address the problem of constructing a robust stealthy attack that compromises uncertain cyber-physical systems having unstable zeros. We first interpret the (non-robust) conventional zero-dynamics attack based on Byrnes-Isidori normal form, and then present a new robust zero-dynamics attack for uncertain plants. Different from the conventional strategy, our key idea is to isolate the real zero-dynamics from the plants input-output relation and to replace it with an auxiliary nominal zero-dynamics. As a result, this alternative attack does not require the exact model knowledge anymore. The price to pay for the robustness is to utilize the input and output signals of the system (i.e., disclosure resources). It is shown that a disturbance observer can be employed to realize the new attack philosophy when there is a lack of model knowledge. Simulation results with a hydro-turbine power system are presented to verify the attack performance and robustness.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2019. Vol. 64, no 12, p. 4907-4919
Keywords [en]
Eigenvalues and eigenfunctions, Uncertainty, Generators, Actuators, Closed loop systems, Erbium, Disturbance observer, robustness, security, uncertain system, zero-dynamics attack
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-266431DOI: 10.1109/TAC.2019.2903429ISI: 000502278300005Scopus ID: 2-s2.0-85077374170OAI: oai:DiVA.org:kth-266431DiVA, id: diva2:1385987
Note

QC 20200116

Available from: 2020-01-16 Created: 2020-01-16 Last updated: 2020-01-16Bibliographically approved

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Johansson, Karl H.

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