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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离散事件触发非线性网络化控制系统鲁棒容错控制

曹慧超， 李炜   

  1. 兰州理工大学 电气工程与信息工程学院,兰州 730050
  • 收稿日期:2014-05-09 出版日期:2015-11-01 发布日期:2015-11-01
  • 通讯作者: 李炜(1963-),女,教授,博士生导师.研究方向:动态系统故障诊断与容错控制,工业过程先进控制.E-mail:liwei@lut.cn
  • 作者简介:曹慧超(1986-),女,博士研究生.研究方向:故障诊断与容错控制.E-mail:cchhcc_love@126.com
  • 基金资助:
    国家自然科学基金项目(61364011); 甘肃省自然科学基金项目(1308RJZA148); 兰州理工大学基金项目(03-0099)

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

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摘要： 首先建立了集网络时变时延、执行器饱和约束及故障、离散事件触发条件于一体的不确定非线性闭环故障网络化控制系统(NCS)模型。然后应用Lyapunov稳定性理论和时延分段技术,结合改进的Jensen积分不等式和互反凸组合引理,推证出了闭环故障NCS稳定的时滞且事件依赖不变集充分条件,并给出了鲁棒容错控制器与离散事件触发条件权矩阵的协同设计方法。最后,通过一个仿真算例验证了本文方法不仅能使基于离散事件触发通信机制(DETCS)的NCS对故障有效容错,而且可通过触发参数的适当选取来节省有限的网络资源。

关键词: 计算机应用, 容错控制, 离散事件触发, 网络化控制系统, 执行器饱和, 执行器故障

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

中图分类号: 

  • TP302.8
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