Anomaly Detection of Permanent Magnet Synchronous Motor Based on Improved DWT-CNN Multi-Current Fusion

The Permanent Magnet Synchronous Motor (PMSM) is the power source maintaining the stable and efficient operation of various pieces of equipment; hence, its reliability is crucial to the safety of public equipment. Convolutional Neural Network (CNN) models face challenges in extracting features from...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2024-04, Vol.24 (8), p.2553
Main Authors: Tang, Minqi, Liang, Lihua, Zheng, Haitao, Chen, Junjun, Chen, Dongdong
Format: Article
Language:English
Subjects:
Accuracy
Analysis
anomaly detection
DWT-CNN
Fault diagnosis
Fourier transforms
Localization
Magnets, Permanent
Methods
multi-current signals
Neural networks
permanent magnet synchronous motor
Sensors
Wavelet transforms
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Summary:The Permanent Magnet Synchronous Motor (PMSM) is the power source maintaining the stable and efficient operation of various pieces of equipment; hence, its reliability is crucial to the safety of public equipment. Convolutional Neural Network (CNN) models face challenges in extracting features from PMSM current data. A new Discrete Wavelet Transform Convolutional Neural Networks (DW-CNN) feature with fusion weight updating Long Short-Term Memory (LSTM) anomaly detection is proposed in this paper. This approach combines Discrete Wavelet Transform (DWT) with high and low-frequency separation processing and LSTM. The anomaly detection method adopts DWT and CNN by separating high and low-frequency processing. Moreover, this method combines the hybrid attention mechanism to extract the multi-current signal features and detects anomalies based on weight updating the LSTM network. Experiments on the motor bearing real fault dataset and the PMSM stator fault dataset prove the method's strong capability in fusing current features and detecting anomalies.
ISSN:1424-8220
1424-8220
DOI:10.3390/s24082553