Fault diagnosis based on orthogonal semi-supervised LLTSA for feature extraction and Transductive SVM for fault identification
To overcome the low diagnosis accuracy caused by the scarcity of labeled training samples, a fault diagnosis method was proposed using orthogonal Semi-supervised linear local tangent space alignment (OSSLLTSA) for feature extraction and transductive support vector machine (TSVM) for fault identifica...
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Published in | Journal of intelligent & fuzzy systems Vol. 34; no. 6; pp. 3499 - 3511 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
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IOS Press BV
01.01.2018
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Abstract | To overcome the low diagnosis accuracy caused by the scarcity of labeled training samples, a fault diagnosis method was proposed using orthogonal Semi-supervised linear local tangent space alignment (OSSLLTSA) for feature extraction and transductive support vector machine (TSVM) for fault identification. Through extracting the statistical features were extracted from the sub-bands of vibration signals decomposed by wavelet packet decomposition (WPD), the high-dimensional feature set could be obtained. Following that, the improved kernel space distance evaluation method was applied to remove non-sensitive fault features. Then, a semi-supervised manifold learning method (OSSLLTSA) was proposed to reduce the dimensionality of the fault feature set, and thus to extract fused fault features with high clustering performance. OSSLLTSA overcomes the over-learning of supervised manifold learning and projection aimlessness of unsupervised manifold learning. Finally, the low-dimensional feature set after dimension reduction was inputted into TSVM for fault diagnosis. TSVM was able to completely utilize the fault information contained in unlabelled samples to modify the model, and the trained fault diagnosis model has better generalization ability. The effectiveness of the proposed method was verified based on the case of gearbox fault. Experimental results showed that the proposed method is able to achieve very high fault diagnosis accuracy even when labeled samples were insufficient. |
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AbstractList | To overcome the low diagnosis accuracy caused by the scarcity of labeled training samples, a fault diagnosis method was proposed using orthogonal Semi-supervised linear local tangent space alignment (OSSLLTSA) for feature extraction and transductive support vector machine (TSVM) for fault identification. Through extracting the statistical features were extracted from the sub-bands of vibration signals decomposed by wavelet packet decomposition (WPD), the high-dimensional feature set could be obtained. Following that, the improved kernel space distance evaluation method was applied to remove non-sensitive fault features. Then, a semi-supervised manifold learning method (OSSLLTSA) was proposed to reduce the dimensionality of the fault feature set, and thus to extract fused fault features with high clustering performance. OSSLLTSA overcomes the over-learning of supervised manifold learning and projection aimlessness of unsupervised manifold learning. Finally, the low-dimensional feature set after dimension reduction was inputted into TSVM for fault diagnosis. TSVM was able to completely utilize the fault information contained in unlabelled samples to modify the model, and the trained fault diagnosis model has better generalization ability. The effectiveness of the proposed method was verified based on the case of gearbox fault. Experimental results showed that the proposed method is able to achieve very high fault diagnosis accuracy even when labeled samples were insufficient. |
Author | Su, Zuqiang Zhang, Yi Xiao, Hong Luo, Jiufei Xu, Haitao Zheng, Kai |
Author_xml | – sequence: 1 givenname: Jiufei surname: Luo fullname: Luo, Jiufei organization: School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing, P.R. China – sequence: 2 givenname: Haitao surname: Xu fullname: Xu, Haitao organization: School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing, P.R. China – sequence: 3 givenname: Zuqiang surname: Su fullname: Su, Zuqiang organization: School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing, P.R. China – sequence: 4 givenname: Hong surname: Xiao fullname: Xiao, Hong organization: School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing, P.R. China – sequence: 5 givenname: Kai surname: Zheng fullname: Zheng, Kai organization: School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing, P.R. China – sequence: 6 givenname: Yi surname: Zhang fullname: Zhang, Yi organization: School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing, P.R. China |
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CitedBy_id | crossref_primary_10_1016_j_engappai_2021_104365 crossref_primary_10_1016_j_psep_2022_01_048 crossref_primary_10_1016_j_ifacsc_2021_100150 crossref_primary_10_1016_j_isatra_2023_09_027 |
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SubjectTerms | Clustering Decomposition Fault diagnosis Feature extraction Gearboxes Machine learning Manifolds (mathematics) Statistical analysis Statistical methods Support vector machines Wavelet transforms |
Title | Fault diagnosis based on orthogonal semi-supervised LLTSA for feature extraction and Transductive SVM for fault identification |
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