Journal
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
Volume 51, Issue 14, Pages 2746-2766Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207721.2020.1801883
Keywords
Distributed secure estimation; cyber-physical systems; fading measurements; false data injection attacks; attack detection
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Funding
- NationalNatural Science Foundation of China [61773334, 61733012]
- Natural Science Fund of Hebei Provincial [F2020203079]
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This paper is concerned with the distributed secure estimation problem for a cyber-physical system (CPS) with fading measurements and false data injection (FDI) attacks, where the fading probability of measurements is assumed to be individual for each sensor, and the FDI attacks occur at the physical system layer to intensively modify the system's state. For improving security of the system, an attack detection mechanism is proposed based on an FDI attack observer constructed by minimising the upper bound of observation error covariance. Then a complete distributed state estimation algorithm is given to provide locally reliable estimation. A sufficient condition is provided to guarantee boundedness of the estimation error covariance. Finally, the effectiveness of the proposed method is illustrated by numerical simulation and practical example simulation.
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