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Title:
FAULT DIAGNOSIS METHOD FOR MECHANICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/178930
Kind Code:
A1
Abstract:
A fault diagnosis method for a mechanical device. First, utilizing a signal analysis method to extract fault features of a mechanical device comprised in signals collected by sensors, and forming fault feature vectors; then, utilizing the fault feature vectors to train a fault diagnosis classifier offline, wherein the fault diagnosis classifier adopts a combined classifier, and the combined classifier adopts an Adaboost lifting algorithm to act as a combined method; finally, applying in real time the trained fault diagnosis classifier to perform fault diagnosis on the mechanical device. The present method adopts a combined classification method to achieve the diagnosis of faults in parts of mechanical devices, and may be used for online real-time fault diagnosis, and for promptly discovering the failure of the mechanical device, thus preventing the occurrence of major accidents. Meanwhile, compared to other fault diagnosis methods, the described method significantly improves the accuracy of fault diagnosis.

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Inventors:
LOU PEIHUANG (CN)
GUO DAHONG (CN)
QIAN XIAOMING (CN)
TU JIACHEN (CN)
ZHANG JIONG (CN)
Application Number:
PCT/CN2018/087490
Publication Date:
September 26, 2019
Filing Date:
May 18, 2018
Export Citation:
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Assignee:
UNIV NANJING AERONAUTICS & ASTRONAUTICS (CN)
MIRACLE AUTOMATION ENGINEERING CORPORATION LTD (CN)
International Classes:
G01M13/04
Foreign References:
CN105738109A2016-07-06
CN107560850A2018-01-09
CN105241665A2016-01-13
KR20150001158A2015-01-06
Other References:
HU , JINHAI ET AL.: "Ensemble of Classification Methods Based on SVM and Its Application in Diagnosis", JOURNAL OF PROPULSION TECHNOLOGY, vol. 28, no. 6, 31 December 2007 (2007-12-31), pages 669 - 673
FENG, SHUAI: "Fault Diagnosis of Raiway Rolling Bearing Based on SVM-AdaBoost", URBAN PUBLIC TRANSPOT, 31 May 2017 (2017-05-31), pages 30 - 36
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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