Guaranteed cost control of hybrid-triggered networked systems with stochastic cyber-attacks

• Published in: ISA transactions 2020-09, Vol.104, p.84-92
• Main Authors: Wu, Jiancun, Peng, Chen, Zhang, Jin, Yang, Mingjin, Zhang, Bao-Lin
• Format: Article
• Language: English
• Subjects: Cyber-attacks; Guaranteed cost control; Hybrid-triggered mechanism; Networked control systems
• ISSN: 0019-0578; 1879-2022
• DOI: 10.1016/j.isatra.2019.04.017

This paper is concerned with guaranteed cost control for a hybrid-triggered networked system subject to stochastic cyber-attacks. First, a hybrid-triggered mechanism including time-triggered mechanism and event-triggered mechanism is proposed to mitigate the pressure of network transmission, in which the switching between two mechanisms satisfies Bernoulli distribution. Second, the closed-loop system subject to the hybrid communication scheme and stochastic cyber-attacks is modelled as a stochastic system with an interval time-varying delay. Then, based on the Lyapunov–Krasovskii functional approach, two theorems are presented for guaranteeing the mean-square stability of the studied system. Finally, the effectiveness of the proposed method is demonstrated through a numerical example. •A hybrid-triggered mechanism is presented to mitigate the pressure of network transmission.•Two stochastic variables are used to describe the switch process of two triggered schemes and the probability of cyber-attacks occurred.•The feedback guaranteed cost controller gain and parameters of triggered can be co-design.