Compound-fault Diagnosis of Bearing Based on Order Tracking Wavelet Packet and Rough Sets

被引:2
作者
Tian Guang [1 ]
Tian Hao [1 ]
Liu Guang-sheng [1 ]
Zhao Jin-hui [1 ]
Luo Li-ping [2 ]
机构
[1] Ordnance Engn Coll, Dept Guns Engn, Shijiazhuang 050003, Hebei, Peoples R China
[2] PLA, Unit 75482, Guangxi 532600, Peoples R China
来源
MECHANICAL AND ELECTRONICS ENGINEERING III, PTS 1-5 | 2012年 / 130-134卷
关键词
order tracking; wavelet packet; rough sets theory; bearing; decision rule; compound-fault diagnosis;
D O I
10.4028/www.scientific.net/AMM.130-134.1681
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The diagnosis of compound-fault is always a difficult point, and there is not an effective method in equipment diagnosis field, then a new method of compound-fault diagnosis was presented. The vibration signals at start-up in the gearbox are non-stationary signals, and traditional ways of diagnosis have low precision. Order tracking and wavelet packet and rough sets theory are introduced in the compound-fault diagnosis of bearing. First, the vibration signals at start-up were resampled using computer order tracking arithmetic and equal angle distributed vibration signals were obtained, and wavelet packet has been used for equal angle distributed vibration signals decomposition and reconstruction. Then, energy distribution of every frequency band can be calculated according to normalization process. A new feature vector can be obtained, then clear and concise decision rules can be obtained by rough sets theory. Finally, the result of compound-fault example proves that the proposed method has high validity and more amplitude appliance foreground.
引用
收藏
页码:1681 / +
页数:2
相关论文
共 4 条
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