Dynamic Event-Triggered Fault Detection for Discrete Networked Control System With Time-Delay

Abstract

The dynamic event-triggered fault detection problem for discrete networked control systems with time-delay is investigated in this paper. Firstly, for reducing the triggering times, a new dynamic event-trigged is proposed. Secondly, an observer is constructed on the controller node to generate fault residual, and the mathematical model of the closed-loop systems is established by analyzing the sequence of the transmission signal. Thirdly, by constructing a suitable Lyapunov-Krasovskii functional, the sufficient stability conditions for the closed-loop networked control systems are derived. The computing method of the observer gain matrix, the controller gain matrix and the minimal disturbance repression index is provided. Finally, a casy study on the dynamic cart is employed to illustrate the merits of the proposed approach.

Networked fault detection for fuzzy systems using a quantizer with event-triggered strategy

“…It updates control signals only when triggered, which further saves resources. Wang et al (2022b) designed a new controller, constructed an observer on the node of the controller to generate fault residual, and established a closed-loop system by analyzing the sequence of transmitted signals. Compared with Wang et al (2022b), this paper designed a quantizer with an event-triggering strategy, which saves network resources and reduces the length and number of transmitted packets.…”