A method of data fusion system for fault detection based on model-based diagnosis and evidence theory

被引：0

作者：

Yao Qin ^{[1
]}

Shi Yi-Kai ^{[1
]}

Shan Ning ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Mechatron Engn, Xian 710072, Peoples R China

来源：

PROCEEDINGS OF 2008 INTERNATIONAL CONFERENCE ON CONDITION MONITORING AND DIAGNOSIS | 2007年

关键词：

word-model-based diagnosis; conflict set; hitting set; Dempster-Shafer evidence theory; data fusion;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper applied first Principles that is brought forward by Reiter etc, to obtain the conflict set and hitting set. Based this result, it introduce date fusion system with D-S evidence theory to solve the problem of detecting multi-fault through multi-symptom of these faults. The method is to seek for conflict set candidates through SD (system description) of the device off-line, and then discerns minimal conflict set and minimal hitting set on-line through the action data of the device based on the fault symptoms. Afterwards, it assigns prior probability to each possible fault component and process data fusion on the set of possible fault components using D-S evidence theory. Finally the probability order of the possible fault components is proposed.

引用

页码：1365 / 1368

页数：4

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