TFFC-RNN:A New RNN Based Approach for Bearing and Misalignment Compound Fault
This paper proposes a fault diagnosis method based on the speed signal of the servo motor for the bearing and misalignment compound fault. First, it explores the change of motor speed caused by compound fault excitation and analyzes the theoretical feasibility of the speed method to achieve compound...
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Published in | 2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) pp. 2504 - 2509 |
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Main Authors | , |
Format | Conference Proceeding |
Language | English |
Published |
IEEJ-IAS
15.05.2022
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Subjects | |
Online Access | Get full text |
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Abstract | This paper proposes a fault diagnosis method based on the speed signal of the servo motor for the bearing and misalignment compound fault. First, it explores the change of motor speed caused by compound fault excitation and analyzes the theoretical feasibility of the speed method to achieve compound fault diagnosis. Experiments show that the detection of weak fault signals such as bearings in compound faults is susceptible to interference from mismatched installation faults, which will make the traditional diagnosis algorithms invalid. The pre-processed speed signal and the signal obtained through fast fourier transform(fft) are passed through the recurrent neural network respectively, and the input time-domain features and frequency-domain features are fused together as the basis for fault classification. This Time-Frequency Feature Compound-RNN model (TFFC-RNN) can perfectly classify bearing faults and normal signals under the interference of misalignment faults. Finally, the research and experimental verification of which recurrent neural network to use as the best composition of the model is carried out. |
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AbstractList | This paper proposes a fault diagnosis method based on the speed signal of the servo motor for the bearing and misalignment compound fault. First, it explores the change of motor speed caused by compound fault excitation and analyzes the theoretical feasibility of the speed method to achieve compound fault diagnosis. Experiments show that the detection of weak fault signals such as bearings in compound faults is susceptible to interference from mismatched installation faults, which will make the traditional diagnosis algorithms invalid. The pre-processed speed signal and the signal obtained through fast fourier transform(fft) are passed through the recurrent neural network respectively, and the input time-domain features and frequency-domain features are fused together as the basis for fault classification. This Time-Frequency Feature Compound-RNN model (TFFC-RNN) can perfectly classify bearing faults and normal signals under the interference of misalignment faults. Finally, the research and experimental verification of which recurrent neural network to use as the best composition of the model is carried out. |
Author | Yang, Ming Guo, Ziran |
Author_xml | – sequence: 1 givenname: Ziran surname: Guo fullname: Guo, Ziran email: 21S006077@stu.hit.edu.cn organization: Harbin Institute of Technology,Institute of Power Electronics & Electric Drives,Harbin,China – sequence: 2 givenname: Ming surname: Yang fullname: Yang, Ming organization: Institute of Power Electronics & Electric Drives, Harbin Institute of Technology,Harbin,China |
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Snippet | This paper proposes a fault diagnosis method based on the speed signal of the servo motor for the bearing and misalignment compound fault. First, it explores... |
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SubjectTerms | artificial intelligence bearing fault compound fault Data models Eigenvalues and eigenfunctions Fault diagnosis Interference Power electronics Recurrent Neural Network(RNN) Recurrent neural networks Time-frequency analysis |
Title | TFFC-RNN:A New RNN Based Approach for Bearing and Misalignment Compound Fault |
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