Event-Triggered Fault Detection Filter Design for a Continuous-Time Networked Control System

• Published in: IEEE transactions on cybernetics Vol. 46; no. 12; pp. 3414 - 3426
• Main Authors: Wang, Yu-Long, Shi, Peng, Lim, Cheng-Chew, Liu, Yuan
• Format: Journal Article
• Language: English
• Published: United States IEEE 01.12.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Actuators; Bandwidth; Computer simulation; Continuous time systems; Control systems design; Controllers; Delays; Event-triggering; Fault detection; Filter design (mathematics); Integrals; Networked control systems; networked control systems (NCSs); Performance analysis
• ISSN: 2168-2267; 2168-2275
• DOI: 10.1109/TCYB.2015.2507177

This paper studies the problem of event-triggered fault detection filter (FDF) and controller coordinated design for a continuous-time networked control system (NCS) with biased sensor faults. By considering sensor-to-FDF network-induced delays and packet dropouts, which do not impose a constraint on the event-triggering mechanism, and proposing the simultaneous network bandwidth utilization ratio and fault occurrence probability-based event-triggering mechanism, a new closed-loop model for the considered NCS is established. Based on the established model, the event-triggered H ∞ performance analysis, and FDF and controller coordinated design are presented. The combined mutually exclusive distribution and Wirtinger-based integral inequality approach is proposed for the first time to deal with integral inequalities for products of vectors. This approach is proved to be less conservative than the existing Wirtinger-based integral inequality approach. The designed FDF and controller can guarantee the sensitivity of the residual signal to faults and the robustness of the NCS to external disturbances. The simulation results verify the effectiveness of the proposed event-triggering mechanism, and the FDF and controller coordinated design.