期刊
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
卷 64, 期 12, 页码 4907-4919出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAC.2019.2903429
关键词
Eigenvalues and eigenfunctions; Uncertainty; Generators; Actuators; Closed loop systems; Erbium; Disturbance observer; robustness; security; uncertain system; zero-dynamics attack
资金
- Institute for Information & Communications Technology Promotion (IITP) - Korea government (MSIT) [2014-0-00065]
- National Research Foundation of Korea (NRF) - Korea government (Ministry of Science and ICT) [NRF-2017R1E1A1A03070342]
- Knut and Alice Wallenberg Foundation
- Swedish Strategic Research Foundation
- Swedish Research Council
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.
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