孙萌,景博,黄以锋,焦晓璇,徐光跃.基于多特征量的D矩阵模型的建立与分析[J].电子测量与仪器学报,2017,31(11):1731-1736
基于多特征量的D矩阵模型的建立与分析
Establishment and analysis of D matrix model based on multi feature quantity
  
DOI:10.13382/j.jemi.2017.11.006
中文关键词:  相关性模型  D矩阵模型  多特征量  信息熵
英文关键词:dependency matrix  D matrix model  multi feature quantity  information entropy
基金项目:航空科学基金(20142896022)资助项目
作者单位
孙萌 空军工程大学航空航天工程学院西安710038 
景博 空军工程大学航空航天工程学院西安710038 
黄以锋 空军工程大学航空航天工程学院西安710038 
焦晓璇 空军工程大学航空航天工程学院西安710038 
徐光跃 空军工程大学航空航天工程学院西安710038 
AuthorInstitution
Sun Meng College of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi’an 710038, China 
Jing Bo College of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi’an 710038, China 
Huang Yifeng College of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi’an 710038, China 
Jiao Xiaoxuan College of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi’an 710038, China 
Xu Guangyue College of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi’an 710038, China 
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中文摘要:
      针对基于单特征量的D矩阵模型会损失测试信号的大量信息的问题,提出了一种基于多特征量的可测性分析模型。首先,在研究D矩阵模型的基础上,对测试信号进行特征提取和多值编码,建立了基于多特征量的D矩阵模型。其次,基于信息熵制定诊断策略和生成故障诊断树,并对模型进行测试性分析,评估其诊断能力。结果表明,与单特征量的D矩阵模型相比,基于多特征量的D矩阵模型选用的测试点数和模糊组数小,故障隔离率高,诊断测试步骤数少,平均测试费用低。
英文摘要:
      Aiming at the problem that the D matrix model based on single feature quantity can lose a lot of information about the test signal, a testability analysis model based on multi feature quantity is proposed. Firstly, based on the study of D matrix model, the feature extraction and multi value coding of the test signal are carried out, and a D matrix model based on multi feature quantity is established. Then, the diagnostic strategies are developed based on the information entropy, the fault diagnosis tree is generated, and the model is analyzed to assess its diagnostic capabilities. The results show that the D matrix model based on multi feature quantity adopts a smaller number of test points and fuzzy group, and has a higher fault isolation rate, less diagnostic test step, and lower average test cost compared with the D matrix model based on the single feature quantity.
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