DING Xiaofeng, ZHANG Yuhua. Feature extraction and fault diagnosis of gearbox based on ICEEMDAN, MPE, RF and SVM[J]. Electric Drive for Locomotives, 2023(1): 42-50.
DING Xiaofeng, ZHANG Yuhua. Feature extraction and fault diagnosis of gearbox based on ICEEMDAN, MPE, RF and SVM[J]. Electric Drive for Locomotives, 2023(1): 42-50. DOI: 10.13890/j.issn.1000-128X.2023.01.006.
Feature extraction and fault diagnosis of gearbox based on ICEEMDAN, MPE, RF and SVM
To solve the challenges related to non-stationary vibration signals in gearboxes
i.e. difficult feature extraction
high redundancy of feature vectors and low fault identification rate
this paper proposed a method of feature extraction and fault diagnosis of gearboxes based on the improved complete ensemble empirical mode decomposition with adaptive noise (ICEEMDAN)
multi-scale permutation entropy (MPE)
random forest (RF) feature importance ranking and support vector machine (SVM). Firstly
the vibration signals of gears in various fault states were decomposed into a series of intrinsic mode functions (IMF) with different frequency distributions by ICEEMDAN. Then
the MPE values of the IMFs were calculated to obtain the nonlinear dynamic features of non-stationary signals in time-frequency distribution. Finally
the importance of such features was evaluated by the RF algorithm
and the sensitive features with high importance were selected to form the optimal feature subset as the input to SVM for fault pattern recognition. The experimental results show that this method with strong feature extraction and representation ability and as high as 99.79% recognition rate on average under different operating conditions is more robust in multi-operating conditions and small sample data sets
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