中国机械工程 ›› 2015, Vol. 26 ›› Issue (14): 1969-1977.

• 机械基础工程 • 上一篇    下一篇

基于粗糙集属性约简和贝叶斯分类器的故障诊断

姚成玉1;李男1;冯中魁1;陈东宁2,3   

  1. 1.燕山大学河北省工业计算机控制工程重点实验室,秦皇岛,066004
    2.燕山大学河北省重型机械流体动力传输与控制重点实验室,秦皇岛,066004
    3.燕山大学先进锻压成形技术与科学教育部重点实验室,秦皇岛,066004
  • 出版日期:2015-07-25 发布日期:2015-08-05
  • 基金资助:
    国家自然科学基金资助项目(51405426);河北省教育厅科研项目(ZH2012062)

Fault Diagnosis Based on Rough Set Attribute Reduction and Bayesian Classifier

Yao Chengyu1;Li Nan1;Feng   Zhongkui1;Chen  Dongning2,3   

  1. 1.Key  Laboratory  of  Industrial  Computer  Control  Engineering  of Hebei  Province,Yanshan University, Qinhuangdao, Hebei, 066004
    2.Hebei  Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, Qinhuangdao, Hebei, 066004
    3.Key Laboratory of Advanced Forging & Stamping Technology and Science,Ministry of Education,Yanshan  University, Qinhuangdao, Hebei, 066004
  • Online:2015-07-25 Published:2015-08-05
  • Supported by:
    National Natural Science Foundation of China(No. 51405426);Hebei Provincial Scientific Research Project of Ministry of Education of China(No. ZH2012062)

摘要:

利用改进的小波包对收集的信号进行特征提取,解决了小波包分解的频率混叠问题;针对故障信息中的冗余属性问题,提出了基于类差别矩阵改进属性重要度的属性约简算法,根据各条件属性在类差别矩阵中出现1的频次定义新的属性重要度,提高属性约简的效率;通过考虑条件属性与类属性间的关联性,提出了基于熵权法的属性加权朴素贝叶斯分类器算法,提高故障分类精度。通过对滚动轴承故障数据的对比分析,验证了所提组合方法在提高故障诊断正确率、快速性方面所具有的优势。

关键词: 故障诊断, 改进小波包, 粗糙集, 属性约简, 属性加权朴素贝叶斯分类器

Abstract:

An improved  wavelet  package  was  used  to extract  feature  of  collected  signals  and  to  solve the wavelet packet aliasing problem.Considering redundant  attributes  in  fault informations,rough set attribute reduction algorithm was proposed based on  class  discernibility matrix  and improved attribute significance,new attribute significance was defined according to the frequency of each condition  attribute  equal to  1  in the class discernibility matrix,which  improved the efficiency of  attribute reduction. Considering the relativity  among  different  condition attributes  and  class  attributes,the  entropy  weight  method-based attribute  weighted  naive Bayesian classifier  algorithm  was  proposed,which  improved the fault classification accuracy.By comparative analysis of  rolling bearing failure data,it shows that the proposed  hybrid method herein has  certain  advantages  in  fault  diagnosis  accuracy  and  rapidity.

Key words: fault , diagnosis;improved wavelet package;rough , set;attribute , reduction;attribute , weighted naive , Bayesian , classifier

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