Predictive Health Monitoring of Induction Motors Using 1D Convolutional Neural Network
摘要
This research introduces a One-Dimensional Convolutional Neural Network (1D-CNN) model aimed at predicting ten different health conditions of Drive-End (DE) bearings in a 1-hp induction motor equipped with a 6202 2RS wheel bearing. The objective is to enhance fault diagnosis accuracy and provide a robust solution for predictive maintenance in rotating machinery, specifically addressing mechanical bearing failures, which are responsible for a significant portion of motor faults.
MethodsAcoustic data from the induction motor, captured through an R15a physical sound sensor, was processed and fed into the 1D-CNN model. This model was designed to automatically extract relevant features from raw acoustic signals, and a fully connected neural network was employed to classify the different bearing fault conditions. The model's performance was benchmarked against the FaultNet model using both the Case Western Reserve University (CWRU) dataset and a proprietary acoustic dataset. Key evaluation metrics included classification accuracy and robustness across both datasets.
ResultsThe 1D-CNN model demonstrated high accuracy in categorizing all ten DE bearing health conditions across both datasets. The results indicated superior performance compared to FaultNet, highlighting the model's ability to predict bearing failures effectively. These findings emphasize the potential of the proposed model for real-time fault diagnosis in industrial applications.
ConclusionsThe new developed 1D-CNN architecture offers a promising solution for predictive maintenance of rotating machines, enabling timely detection of bearing faults and reducing the risk of unforeseen breakdowns. The successful application of this model in both laboratory and real-world datasets supports its effectiveness and relevance within the framework of Industry 4.0.