计算机应用 ›› 2013, Vol. 33 ›› Issue (01): 291-294.DOI: 10.3724/SP.J.1087.2013.00291

• 典型应用 • 上一篇    下一篇

单向阀的小波包核主元分析故障检测

田宁1,2,范玉刚2,3,吴建德3,4,黄国勇2,3,王晓东1,2   

  1. 1. 昆明理工大学 信息工程与自动化学院, 昆明 650500
    2. 云南省矿物管道输送工程技术研究中心, 昆明 650500
    3. 昆明理工大学 信息工程与自动化学院, 昆明 650504
    4. 云南省矿物管道输送工程技术研究中心, 昆明 650504
  • 收稿日期:2012-07-05 修回日期:2012-08-16 出版日期:2013-01-01 发布日期:2013-01-09
  • 通讯作者: 范玉刚
  • 作者简介:田宁(1984-),男,山西大同人,硕士研究生,主要研究方向:基于声发射的故障检测系统;范玉刚(1973-),男,山东威海人,副教授,博士,主要研究方向:基于机器学习的智能信息处理、数据挖掘;吴建德(1979-),男,云南保山人,副教授,博士,主要研究方向:基于嵌入式技术的工业机器人技术、矿物管道输送实时检测与控制。
  • 基金资助:

    国家自然科学基金资助项目(51169007);云南省科技计划项目(2010DH004);云南省中青年学术和技术带头人后备人才培养计划项目(2011CI017)

Check valve's fault detection with wavelet packet's kernel principal component analysis

TIAN Ning1,2,FAN Yugang1,3,WU Jiande3,4,HUANG Guoyong1,3,WANG Xiaodong1,2   

  1. 1. Engineering Research Center for Mineral Pipeline Transportation of Yunnan Province, Kunming Yunnan 650500, China
    2. Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming Yunnan 650500, China
    3. Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming Yunnan 650504, China
    4. Engineering Research Center for Mineral Pipeline Transportation of Yunnan Province, Kunming Yunnan 650504, China
  • Received:2012-07-05 Revised:2012-08-16 Online:2013-01-01 Published:2013-01-09
  • Contact: FAN Yugang

摘要: 高压活塞隔膜泵是管道输送的最重要动力源,为了解决其内部单向阀故障的在线监测问题,提出一种基于声发射信号的小波包时频及核主元分析(KPCA)的检测方法。首先采用小波包对声发射数据进行处理,求出信号各频率段的能量值;然后采用KPCA方法对能量值在高维空间进行分解建立特征模型,利用特征模型中的SPE和T2统计量对故障信号进行检测;最后对GEHO型隔膜泵单向阀的声发射数据进行实验验证。通过与主元分析方法的比对,表明所提方法能够快速、准确地对单向阀故障进行在线检测,在高压活塞隔膜泵无损故障检测领域具有良好的应用前景。

关键词: 声发射, 小波包分解, 核主元分析, 故障检测

Abstract: High pressure piston diaphragm pump is the most important power source of the pipeline transportation. To solve the problem of on-line monitoring on the fault of internal piston, the authors put forward a detection method based on acoustic emission signal's wavelet packet frequency and Kernel Principal Component Analysis (KPCA). Firstly, the author adopted wavelet packet to deal with the acoustic emission data to get each frequency band energy value. Secondly, the authors used KPCA to decompose the energy in high dimensional space to find the feature model, and made use of statistics SPE and T2 in feature model to make detection on fault signal. Finally, the authors conducted experiments to verify the statistics of acoustic emission of GEHO diaphragm pump's check valve. In comparison with the PCA method, the proposed method can make on-line monitoring on fault of internal piston fast and accurate, so it has good application prospect on the domain of the high pressure piston diaphragm pump's non-destructive fault detection.

Key words: acoustic emission, wavelet packet decomposition, Kernel Principal Component Analysis (KPCA), fault detection

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