A morphology filter method for high speed train cardan shaft unbalance fault detection

被引：0
|
作者：
Li Y.-F. [1 ]
Liu W.-W. [1 ]
Lin J.-H. [2 ]
机构：
[1] School of Mechanical Engineering, Southwest Jiaotong University, Chengdu
[2] State-key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2018年 / 31卷 / 01期
关键词：
Cardan shaft; Fault diagnosis; High speed train; Morphology filter; Structure element;
D O I：
10.16385/j.cnki.issn.1004-4523.2018.01.021
中图分类号：
学科分类号：
摘要：
Structure element is a significant component in mathematical morphology filter, which directly influence the analysis accuracy. To overcome the defects of the widely used flat structure element and triangular structure element, a Hamming window based structure element is proposed in this paper to improve the morphology filter with an application to the fault detection of high speed train cardan shaft. Firstly, the defects of the flat structure element and triangular structure element are analyzed theoretically from the perspective of the basic constitution of structure element and their frequency response function. Then the advantages of Hamming window are shown by comparison with other common used windows. The Hamming structure element is constructed consequently and applied to morphology filter. A test rig experiment is conducted on the unbalance test bench of cardan shaft. The results show that the morphology filter using a Hamming structure element is effective to identify the fundamental frequency and multiple frequencies caused by the imbalance of the cardan shaft. Compared with the traditional triangular structure element, this method is better to manifest the fault features. © 2018, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：176 / 182
页数：6
相关论文
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