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一类非线性网络化系统的鲁棒故障检测
引用本文:何潇,王子栋,吉吟东,周东华.一类非线性网络化系统的鲁棒故障检测[J].空间控制技术与应用,2010,36(5):7-12,49.
作者姓名:何潇  王子栋  吉吟东  周东华
作者单位:1. 清华大学信息技术研究院,北京,100084
2. 英国布鲁奈尔大学信息系统与计算学系,伦敦,UB8,3PH
3. 清华大学自动化系,北京,100084
基金项目:国家自然科学基金,中国博士后科学基金 
摘    要:研究了一类非线性网络化系统的鲁棒故障检测问题.系统的不确定参数具有范数有界约束,非线性项满足扇形域有界条件,系统状态时滞时变有界.用服从伯努利分布的随机序列描述系统观测数据的随机丢失.将原问题转化为鲁棒H∞问题后,以线性矩阵不等式的形式给出了鲁棒故障检测滤波器的存在条件,进而得到所求滤波器的增益阵.

关 键 词:故障检测  鲁棒性  网络化系统

Robust Fault Detection for a Class of Nonlinear Networked Systems
HE Xiao,WANG Zidong,JI Yindong,ZHOU Donghua.Robust Fault Detection for a Class of Nonlinear Networked Systems[J].Aerospace Contrd and Application,2010,36(5):7-12,49.
Authors:HE Xiao  WANG Zidong  JI Yindong  ZHOU Donghua
Institution:1. Research Institute of Information Technology,Tsinghua University,Beijing 100084,China;2. Department of Information Systems and Computing,Brunel University,Uxbridge,UB8 3PH,UK;3. Department of Automation,Tsinghua University,Beijing 100084,China)
Abstract:The robust fault detection problem for a class of discrete-time nonlinear networked systems with state delays and random packet dropouts is investigated in this paper. System parameters are uncertain but vary in a norm-bounded region; the state delay is time-varying within a specific interval,and the upper bound and lower bound are known; the nonlinearterm is represented by using a sector-bounded nonlinear function,which is more general than Lipschitz nonlinear condition. Random packet dropout induced by limited bandwidth network cable is described by a Bernoulli distributed random sequence. A sufficient condition indicating the existence of the desired fault detection filter is provided,and them the gain matrices can be further determined.
Keywords:fault detection  robustness  networked system
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