The Open Electrical & Electronic Engineering Journal

2017, 11 : 68-86
Published online 2017 February 28. DOI: 10.2174/1874129001711010068
Publisher ID: TOEEJ-11-68

RESEARCH ARTICLE
 Hybrid Active-Passive Robust Fault-Tolerant Control of Event-Triggered Nonlinear NCS

Jun Wang, * , Xiaowan Yao and Wei Li

* Address correspondence to this author at College of Electrical and Information Engineering, Lanzhou University of Technology, Peoples Republic of China; Tel: 1500260 8239; E-mail: wangj31901@163.com

ABSTRACT

In this paper, the authors aimed to analyze uncertain nonlinear networked control systems (NCS) under discrete event-triggered communication scheme (DETCS), in which an integrated design methodology between robust fault detection observer and active fault-tolerant controller is proposed. Moreover, the problem of hybrid active–passive robust fault-tolerant control, which integrated passive fault-tolerant control, fault detection, and controller reconstruction, is researched. In consideration of the impact of uncertainties and network-induced delay on system performance, a new class of uncertain nonlinear NCS fault model is established based on T-S fuzzy model. By employing Lyapunov stability theory, H∞ control theory, and linear matrix inequality method, the fault detection observer and hybrid fault-tolerant controller are both appropriately designed. In addition, the sufficient condition that guaranteed the asymptotically robust stability of nonlinear NCS against any actuator failures is deduced. Finally, a numerical simulation is provided to show the effectiveness of the proposed methods.

Keywords:

Nonlinear networked control system, Hybrid active–passive robust fault-tolerant control, T-S fuzzy model, Discrete event-triggered communication scheme, Fault detection, PTTCS.