Journal
IEEE TRANSACTIONS ON CYBERNETICS
Volume 52, Issue 9, Pages 9076-9089Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCYB.2021.3051963
Keywords
Denial-of-service attack; State estimation; Nonlinear systems; Switches; Monitoring; Linear systems; Estimation error; Denial-of-service (DoS) attacks; distributed state estimation; event-triggered (ET) communication mechanism; nonlinear systems
Categories
Funding
- National Natural Science Foundation of China [61621004, U1908213]
- National Key Research and Development Program of China [2020YFE0201100]
- Research Fund of State Key Laboratory of Synthetical Automation for Process Industries [2018ZCX03]
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This article investigates the resilient event-triggered distributed state estimation problem for nonlinear systems under denial-of-service attacks. By designing a multi-mode switching estimator and dynamic trigger threshold, the efficiency loss of the ET mechanism caused by DoS attacks is addressed. Sufficient conditions are provided to guarantee the stability of the estimation error system under DoS attacks.
This article investigates the resilient event-triggered (ET) distributed state estimation problem for nonlinear systems under denial-of-service (DoS) attacks. Different from the existing results mainly considering linear or specified nonlinear systems, more general nonlinear systems are considered in this study. Moreover, the considered DoS attacks are able to compromise different communication links among estimators independently. In this context, by resorting to the techniques of incremental homogeneity, a nonlinear ET distributed estimation scheme is designed to estimate the states and regulate the data transmission. Under this scheme, the resilient state estimation is achieved by employing a multimode switching estimator, and the problem of efficiency loss of the ET mechanism caused by DoS attacks is solved by designing a dynamic trigger threshold with switched update laws. Then, based on the decay rates of the Lyapunov function corresponding to different communication modes, sufficient conditions are given to guarantee the stability of the estimation error system under DoS attacks. Finally, simulation results are provided to verify the effectiveness of the proposed method.
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