Journal
IET CONTROL THEORY AND APPLICATIONS
Volume 11, Issue 11, Pages 1756-1766Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-cta.2016.1313
Keywords
sensors; robust control; observers; linear systems; cyber-physical systems; variable structure systems; fault diagnosis; robust detection; state reconstruction; sensor attacks; cyber-physical systems; sliding modes; cyber-attack reconstruction; cyber-attack detection; linear cyber-physical system; robust state-sensor attack observer design; bounded modelling errors; state equation; square plants; fault detection
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The problem of detection and reconstruction of cyber-attacks corrupting states and/or outputs of a linear cyber-physical system is addressed. Robust state/sensor attack observers are designed able both to work as detection monitors with guaranteed performances, and to reconstruct the attacks within a finite-time. Detection and reconstruction are performed robustly with respect to bounded modelling errors possibly affecting the state equation. Compensation of attacks is also addressed for square plants. An extensive simulation study using test-cases taken from the literature is shown to support the theoretical findings.
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