带有时延和量化的网络控制系统的故障检测  

Fault detection for networked control systems with time-varying delays and quantization

作　　者：龙跃[1] 杨光红[1,2] 

机构地区：[1]东北大学信息科学与工程学院,沈阳110819 [2]东北大学流程工业综合自动化国家重点实验室,沈阳110819

出　　处：《中国科技论文》2012年第1期64-68,78,共6页China Sciencepaper

基　　金：国家自然科学基金资助项目(60904010;60974043;61004015);高等学校博士学科点专项科研基金资助项目(20100042110027)

摘　　要：讨论了当网络控制系统存在时变时延和量化情况下的有限频故障检测问题。首先将此类网络控制系统建模成带有量化误差的线性时滞系统;其次给出了有限频H∞性能的定义,并且将所要研究的问题转化为带有有限频扰动的滤波问题。随后给出了线性时滞系统能够达到一定的有限频H∞性能的充分条件,并根据所得的条件,设计了故障检测滤波器;最后,仿真算例验证了所提方法的有效性。The fault detection （FD） problem for networked Conm）l systems （NCSs） with respect to time-varying dclaysand quanfization has been investigated. Firstly, the considered NCS is modeled as a linear lime-delay system with quantization error. Then a new definition named finite-frequency H~ performance is given, then the FI5 problem is converted into an H,o filtering problem with finite-frequency distutt）ance. Subsequently, sufficient-condition guaranteeing the linear time-delay system with such a performance is presented. By virtue of this condition, the fault detection filter （FDF） is designed. Finally, an example is given to illuslrate the effectiveness of the proposed method.

关 键 词：故障检测 网络控制系统 网络诱导时变时延 量化 有限频 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]