Compound-fault Diagnosis of Bearing Based on Order Tracking Wavelet Packet and Rough Sets
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 compoundfault 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.
order tracking wavelet packet rough sets theory bearing decision rule compound-fault diagnosis
Tian Guang Tian Hao Liu Guang-sheng Zhao Jin-hui Luo Li-ping
Department of Guns Engineering, Ordnance Engineering College, Shijiazhuang, Hebei, 050003, China Unit 75482, PLA., Pingxiang, Guangxi, 532600, China
国际会议
合肥
英文
1681-1685
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）