Security distributed state estimation for nonlinear networked systems against DoS attacks

• Published in: International journal of robust and nonlinear control Vol. 30; no. 3; pp. 1156 - 1180
• Main Authors: Liu, Jinliang, Suo, Wei, Zha, Lijuan, Tian, Engang, Xie, Xiangpeng
• Format: Journal Article
• Language: English
• Published: Bognor Regis Wiley Subscription Services, Inc 01.02.2020
• Subjects: distributed state estimation; DoS attacks; event‐triggered scheme (ETS); Linear matrix inequalities; Mathematical analysis; nonlinear networked systems; Nonlinear systems; quantization mechanism; Security; Stability; State estimation
• ISSN: 1049-8923; 1099-1239
• DOI: 10.1002/rnc.4815

Summary This paper is concerned with security distributed state estimation for nonlinear networked systems against denial‐of‐service attacks. By taking the effects of resource constraints into consideration, an event‐triggered scheme and a quantization mechanism are employed to alleviate the burden of network. A mathematical model of distributed state estimation is constructed for nonlinear networked systems against denial‐of‐service attacks. Sufficient conditions ensuring the exponential stability of the estimation error systems are obtained by utilizing the Lyapunov stability theory. The explicit expressions of the designed state estimators are acquired in terms of the linear matrix inequalities. Finally, a numerical example is used to testify the feasibility of the proposed method.