Improved DCNN Based on Multi-Source Signals for Motor Compound Fault Diagnosis
Induction motors, the key equipment for rotating machinery, are prone to compound faults, such as a broken rotor bars and bearing defects. It is difficult to extract fault features and identify faults from a single signal because multiple fault features overlap and interfere with each other in a com...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-04-01
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| Series: | Machines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-1702/10/4/277 |
| _version_ | 1797445287937048576 |
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| author | Xiaoyun Gong Zeheng Zhi Kunpeng Feng Wenliao Du Tao Wang |
| author_facet | Xiaoyun Gong Zeheng Zhi Kunpeng Feng Wenliao Du Tao Wang |
| author_sort | Xiaoyun Gong |
| collection | DOAJ |
| description | Induction motors, the key equipment for rotating machinery, are prone to compound faults, such as a broken rotor bars and bearing defects. It is difficult to extract fault features and identify faults from a single signal because multiple fault features overlap and interfere with each other in a compound fault. Since current signals and vibration signals have different sensitivities to broken rotor and bearing faults, a multi-channel deep convolutional neural network (MC-DCNN) fault diagnosis model based on multi-source signals is proposed in this paper, which integrates the original signals of vibration and current of the motor. Dynamic attenuation learning rate and SELU activation function were used to improve the network hyperparameters of MC-DCNN. The dynamic attenuated learning rate can improve the stability of model training and avoid model collapse effectively. The SELU activation function can avoid the problems of gradient disappearance and gradient explosion during model iteration due to its function configuration, thereby avoiding the model falling into local optima. Experiments showed that the proposed model can effectively solve the problem of motor compound fault identification, and three comparative experiments verified that the improved method can improve the stability of model training and the accuracy of fault identification. |
| first_indexed | 2024-03-09T13:24:36Z |
| format | Article |
| id | doaj.art-b1a8fd96920449e4ad27b42fc1ff3463 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-09T13:24:36Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-b1a8fd96920449e4ad27b42fc1ff34632023-11-30T21:26:17ZengMDPI AGMachines2075-17022022-04-0110427710.3390/machines10040277Improved DCNN Based on Multi-Source Signals for Motor Compound Fault DiagnosisXiaoyun Gong0Zeheng Zhi1Kunpeng Feng2Wenliao Du3Tao Wang4College of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, ChinaCollege of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, ChinaCollege of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, ChinaCollege of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, ChinaCollege of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, ChinaInduction motors, the key equipment for rotating machinery, are prone to compound faults, such as a broken rotor bars and bearing defects. It is difficult to extract fault features and identify faults from a single signal because multiple fault features overlap and interfere with each other in a compound fault. Since current signals and vibration signals have different sensitivities to broken rotor and bearing faults, a multi-channel deep convolutional neural network (MC-DCNN) fault diagnosis model based on multi-source signals is proposed in this paper, which integrates the original signals of vibration and current of the motor. Dynamic attenuation learning rate and SELU activation function were used to improve the network hyperparameters of MC-DCNN. The dynamic attenuated learning rate can improve the stability of model training and avoid model collapse effectively. The SELU activation function can avoid the problems of gradient disappearance and gradient explosion during model iteration due to its function configuration, thereby avoiding the model falling into local optima. Experiments showed that the proposed model can effectively solve the problem of motor compound fault identification, and three comparative experiments verified that the improved method can improve the stability of model training and the accuracy of fault identification.https://www.mdpi.com/2075-1702/10/4/277fault diagnosiscompound faultsinformation fusionlearning rate decayconvolutional neural network |
| spellingShingle | Xiaoyun Gong Zeheng Zhi Kunpeng Feng Wenliao Du Tao Wang Improved DCNN Based on Multi-Source Signals for Motor Compound Fault Diagnosis Machines fault diagnosis compound faults information fusion learning rate decay convolutional neural network |
| title | Improved DCNN Based on Multi-Source Signals for Motor Compound Fault Diagnosis |
| title_full | Improved DCNN Based on Multi-Source Signals for Motor Compound Fault Diagnosis |
| title_fullStr | Improved DCNN Based on Multi-Source Signals for Motor Compound Fault Diagnosis |
| title_full_unstemmed | Improved DCNN Based on Multi-Source Signals for Motor Compound Fault Diagnosis |
| title_short | Improved DCNN Based on Multi-Source Signals for Motor Compound Fault Diagnosis |
| title_sort | improved dcnn based on multi source signals for motor compound fault diagnosis |
| topic | fault diagnosis compound faults information fusion learning rate decay convolutional neural network |
| url | https://www.mdpi.com/2075-1702/10/4/277 |
| work_keys_str_mv | AT xiaoyungong improveddcnnbasedonmultisourcesignalsformotorcompoundfaultdiagnosis AT zehengzhi improveddcnnbasedonmultisourcesignalsformotorcompoundfaultdiagnosis AT kunpengfeng improveddcnnbasedonmultisourcesignalsformotorcompoundfaultdiagnosis AT wenliaodu improveddcnnbasedonmultisourcesignalsformotorcompoundfaultdiagnosis AT taowang improveddcnnbasedonmultisourcesignalsformotorcompoundfaultdiagnosis |