| 基于证据理论的单一故障诊断方法比较研究 |
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| 引用本文： | 梁伟光,王永,韩飞,周建亮.基于证据理论的单一故障诊断方法比较研究[J].东南大学学报(自然科学版),2009(Z1). |
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| 作者姓名： | 梁伟光 王永 韩飞 周建亮 |
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| 作者单位： | 中国科学技术大学自动化系;北京航天飞行控制中心; |
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| 摘 要： | 为了比较和研究证据理论中Dempster,Yager,PCR5三种组合规则的融合效果,构建多源传感器故障诊断识别框架,利用已有实验数据分别对基于3种组合规则融合多传感器信息诊断单一故障的过程进行仿真,并采用信息熵作为不确定性量度.结合融合后的基本概率分配函数和故障判定结果对各组合规则的融合效果进行定量比较、分析和评价.结果表明:3种组合规则均能够融合多传感器信息对所选的单一故障实现诊断,其中,Dempster组合规则的诊断结果具有最低的不确定性,Yager组合规则的效果相对较差.该研究对证据理论组合规则在冲突不明显时的融合效果进行了定量分析,是对已有定性分析研究的验证和补充.
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| 关 键 词： | 证据理论 故障诊断 数据融合 组合规则 信息熵 |
Comparative research of single fault diagnosis methods based on evidence theory |
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| Liang Weiguang, Wang Yong Han Fei Zhou Jianliang.Comparative research of single fault diagnosis methods based on evidence theory[J].Journal of Southeast University(Natural Science Edition),2009(Z1). |
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| Authors: | Liang Weiguang Wang Yong Han Fei Zhou Jianliang |
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| Institution: | Liang Weiguang1,2 Wang Yong1 Han Fei1 Zhou Jianliang2(1Department of Automation,University of Science , Technology of China,Hefei 230027,China)(2Beijing Aerospace Control Center,Beijing 100094,China) |
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| Abstract: | A research is carried to compare the fusion effect of Dempster's rule,Yager's rule and PCR5(proportional conflict redistribution) rule in the evidence theory.The frame of discernment of the multisensor fault diagnosis is formed.Processes of fusing multisensor information and diagnosing the single fault based on the three combination rules are simulated respectively using the existing experimental data.Entropy is chosen as the measure of uncertainty.Quantificational comparison,analysis and evaluation of the ... |
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| Keywords: | evidence theory fault diagnosis data fusion combination rule information entropy |
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