Title: Online fault detection for networked control system with unknown network-induced delays

Authors: Mingming Wang; Xiaoyun Sun; Hui Xing; Haiqing Zheng

Addresses: School of Electrical and Electronics Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China ' School of Electrical and Electronics Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China ' School of Electrical and Electronics Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China ' School of Electrical and Electronics Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China

Abstract: This paper focuses on the online fault detection problem for networked control systems with unknown network-induced delays. In the study, a fault detection model was established for the impact of the unknown network-induced delay. Based on the model, the fault detection filter was constructed, and then the corresponding fault detection problem was converted to an optimisation problem. Finally, a numerical simulation shows that the proposed online fault detection algorithm is not only sensitive to the fault, but also robust to the unknown disturbance caused by the delays.

Keywords: fault detection; networked control system; network-induced delay.

DOI: 10.1504/IJMIC.2018.095832

International Journal of Modelling, Identification and Control, 2018 Vol.30 No.4, pp.293 - 302

Received: 13 Mar 2017
Accepted: 07 Nov 2017
Published online: 23 Oct 2018 *

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