吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (6): 1895-1905.doi: 10.13229/j.cnki.jdxbgxb201506025

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Robust fault-tolerant control for nonlinear networked control system under discrete event-triggered communication scheme

CAO Hui-chao, LI Wei   

  1. College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China
  • Received:2014-05-09 Online:2015-11-01 Published:2015-11-01

Abstract: First, a new model of uncertain nonlinear closed-loop fault Networked Control System(NCS) is established, which integrates the network time-varying delay, actuator saturation and fault, and the discrete event-triggered condition in a unified framework. Then, utilizing the Lyapunov stability theory and delay decomposition technology, combing the improved Jensen integral inequality and the reciprocal convex combination lemma, the delay- and event-dependent invariant set condition for ensuring closed-loop fault NCS stability is derived. The co-design method for both robust fault-tolerant controller and the weight matrix of discrete event-triggered conditions is given. Finally,a simulation case is employed to demonstrate that the proposed method, which guarantees faulty NCS based on Discrete Event-Triggered Communication Scheme(DETCS), possesses good fault-tolerant performance, and saves the limited network resources by reasonably choosing the triggering parameters.

Key words: computer application, fault-tolerant control, discrete event-triggered, networked control system, actuator saturation, actuator fault

CLC Number: 

  • TP302.8
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