Trust-based fault detection and robust fault-tolerant control of uncertain cyber-physical systems against time-delay injection attacks☆
| Autor: | S. Baromand, Lyudmila Mihaylova, Amirreza Zaman |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
Science (General) Kullback-Leibler divergence Computer science Stability (learning theory) Robust control Fault detection and isolation Cyberattacks Q1-390 03 medical and health sciences 0302 clinical medicine Control theory Uncertain systems Divergence (statistics) Unknown time-delay attacks H1-99 Multidisciplinary Cyber-physical system Correlation analysis Fault tolerance Social sciences (General) Variable (computer science) Linear matrix inequalities (LMIs) 030104 developmental biology Control system 030217 neurology & neurosurgery Research Article |
| Zdroj: | Heliyon Heliyon, Vol 7, Iss 6, Pp e07294-(2021) |
| ISSN: | 2405-8440 |
| Popis: | Control systems need to be able to operate under uncertainty and especially under attacks. To address such challenges, this paper formulates the solution of robust control for uncertain systems under time-varying and unknown time-delay attacks in cyber-physical systems (CPSs). A novel control method able to deal with thwart time-delay attacks on closed-loop control systems is proposed. Using a descriptor model and an appropriate Lyapunov functional, sufficient conditions for closed-loop stability are derived based on linear matrix inequalities (LMIs). A design procedure is proposed to obtain an optimal state feedback control gain such that the uncertain system can be resistant under an injection time-delay attack with variable delay. Furthermore, various fault detection frameworks are proposed by following the dynamics of the measured data at the system's input and output using statistical analysis such as correlation analysis and K-L (Kullback-Leibler) divergence criteria to detect attack's existence and to prevent possible instability. Finally, an example is provided to evaluate the proposed design method's effectiveness. Correlation analysis; Cyberattacks; Kullback-Leibler divergence; Linear matrix inequalities (LMIs); Robust control; Uncertain systems; Unknown time-delay attacks |
| Databáze: | OpenAIRE |
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