Bearing Fault Diagnosis Based on Improved Convolutional Deep Belief Network
Mechanical equipment fault detection is critical in industrial applications. Based on vibration signal processing and analysis, the traditional fault diagnosis method relies on rich professional knowledge and artificial experience. Achieving accurate feature extraction and fault diagnosis is difficu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/18/6359 |
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| author | Shuangjie Liu Jiaqi Xie Changqing Shen Xiaofeng Shang Dong Wang Zhongkui Zhu |
| author_facet | Shuangjie Liu Jiaqi Xie Changqing Shen Xiaofeng Shang Dong Wang Zhongkui Zhu |
| author_sort | Shuangjie Liu |
| collection | DOAJ |
| description | Mechanical equipment fault detection is critical in industrial applications. Based on vibration signal processing and analysis, the traditional fault diagnosis method relies on rich professional knowledge and artificial experience. Achieving accurate feature extraction and fault diagnosis is difficult using such an approach. To learn the characteristics of features from data automatically, a deep learning method is used. A qualitative and quantitative method for rolling bearing faults diagnosis based on an improved convolutional deep belief network (CDBN) is proposed in this study. First, the original vibration signal is converted to the frequency signal with the fast Fourier transform to improve shallow inputs. Second, the Adam optimizer is introduced to accelerate model training and convergence speed. Finally, the model structure is optimized. A multi-layer feature fusion learning structure is put forward wherein the characterization capabilities of each layer can be fully used to improve the generalization ability of the model. In the experimental verification, a laboratory self-made bearing vibration signal dataset was used. The dataset included healthy bearings, nine single faults of different types and sizes, and three different types of composite fault signals. The results of load 0 kN and 1 kN both indicate that the proposed model has better diagnostic accuracy, with an average of 98.15% and 96.15%, compared with the traditional stacked autoencoder, artificial neural network, deep belief network, and standard CDBN. With improved diagnostic accuracy, the proposed model realizes reliable and effective qualitative and quantitative diagnosis of bearing faults. |
| first_indexed | 2024-03-10T16:22:16Z |
| format | Article |
| id | doaj.art-26bb079d35604370887f7463d45dc55c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T16:22:16Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-26bb079d35604370887f7463d45dc55c2023-11-20T13:31:19ZengMDPI AGApplied Sciences2076-34172020-09-011018635910.3390/app10186359Bearing Fault Diagnosis Based on Improved Convolutional Deep Belief NetworkShuangjie Liu0Jiaqi Xie1Changqing Shen2Xiaofeng Shang3Dong Wang4Zhongkui Zhu5School of Rail Transportation, Soochow University, Suzhou 215000, ChinaSchool of Rail Transportation, Soochow University, Suzhou 215000, ChinaSchool of Rail Transportation, Soochow University, Suzhou 215000, ChinaWuxi Metro Group Co, Ltd., Wuxi 214000, ChinaState Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200000, ChinaSchool of Rail Transportation, Soochow University, Suzhou 215000, ChinaMechanical equipment fault detection is critical in industrial applications. Based on vibration signal processing and analysis, the traditional fault diagnosis method relies on rich professional knowledge and artificial experience. Achieving accurate feature extraction and fault diagnosis is difficult using such an approach. To learn the characteristics of features from data automatically, a deep learning method is used. A qualitative and quantitative method for rolling bearing faults diagnosis based on an improved convolutional deep belief network (CDBN) is proposed in this study. First, the original vibration signal is converted to the frequency signal with the fast Fourier transform to improve shallow inputs. Second, the Adam optimizer is introduced to accelerate model training and convergence speed. Finally, the model structure is optimized. A multi-layer feature fusion learning structure is put forward wherein the characterization capabilities of each layer can be fully used to improve the generalization ability of the model. In the experimental verification, a laboratory self-made bearing vibration signal dataset was used. The dataset included healthy bearings, nine single faults of different types and sizes, and three different types of composite fault signals. The results of load 0 kN and 1 kN both indicate that the proposed model has better diagnostic accuracy, with an average of 98.15% and 96.15%, compared with the traditional stacked autoencoder, artificial neural network, deep belief network, and standard CDBN. With improved diagnostic accuracy, the proposed model realizes reliable and effective qualitative and quantitative diagnosis of bearing faults.https://www.mdpi.com/2076-3417/10/18/6359mechanical fault diagnosisbearingfeature extractionconvolutional deep belief network |
| spellingShingle | Shuangjie Liu Jiaqi Xie Changqing Shen Xiaofeng Shang Dong Wang Zhongkui Zhu Bearing Fault Diagnosis Based on Improved Convolutional Deep Belief Network Applied Sciences mechanical fault diagnosis bearing feature extraction convolutional deep belief network |
| title | Bearing Fault Diagnosis Based on Improved Convolutional Deep Belief Network |
| title_full | Bearing Fault Diagnosis Based on Improved Convolutional Deep Belief Network |
| title_fullStr | Bearing Fault Diagnosis Based on Improved Convolutional Deep Belief Network |
| title_full_unstemmed | Bearing Fault Diagnosis Based on Improved Convolutional Deep Belief Network |
| title_short | Bearing Fault Diagnosis Based on Improved Convolutional Deep Belief Network |
| title_sort | bearing fault diagnosis based on improved convolutional deep belief network |
| topic | mechanical fault diagnosis bearing feature extraction convolutional deep belief network |
| url | https://www.mdpi.com/2076-3417/10/18/6359 |
| work_keys_str_mv | AT shuangjieliu bearingfaultdiagnosisbasedonimprovedconvolutionaldeepbeliefnetwork AT jiaqixie bearingfaultdiagnosisbasedonimprovedconvolutionaldeepbeliefnetwork AT changqingshen bearingfaultdiagnosisbasedonimprovedconvolutionaldeepbeliefnetwork AT xiaofengshang bearingfaultdiagnosisbasedonimprovedconvolutionaldeepbeliefnetwork AT dongwang bearingfaultdiagnosisbasedonimprovedconvolutionaldeepbeliefnetwork AT zhongkuizhu bearingfaultdiagnosisbasedonimprovedconvolutionaldeepbeliefnetwork |