计算机科学
符号
控制器(灌溉)
控制理论(社会学)
李雅普诺夫函数
控制(管理)
观察员(物理)
数学
算术
人工智能
农学
量子力学
生物
物理
非线性系统
作者
Ling Huang,Jing Guo,Bing Li
出处
期刊:IEEE Access
[Institute of Electrical and Electronics Engineers]
日期:2021-01-01
卷期号:9: 145626-145637
被引量:5
标识
DOI:10.1109/access.2021.3121689
摘要
This paper designs an observer-based controller with a dynamic event-triggered strategy for networked control systems with external disturbance, system uncertainty, and unknown periodic Denial-of-Service (DoS) attacks. First, the system under DoS attacks is modeled as active subsystem and dormant subsystem by using the switching system method. The controller is built based on dynamic event-triggered sequence and observer with the hold-input method used as the control signal for DoS attacks active subsystem. An augmented system is constructed with the time delay method, and the $H_{\infty }$ performance index of the closed-loop switched system is given. Then, using Lyapunov functional theory and some technical lemmas, the sufficient conditions for the stability of the system are given without the disturbance, and with disturbance, the sufficient conditions for the closed-loop system with $H_{\infty }$ performance index are deduced. Finally, a numerical example is given to verify the effectiveness of the theory. Through the minimum optimization problem, the $H_{\infty }$ performance parameter is optimized to increase the disturbance suppression degree of the system.
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