4.6 Article

Anomaly Detection and Inter-Sensor Transfer Learning on Smart Manufacturing Datasets

期刊

SENSORS
卷 23, 期 1, 页码 -

出版社

MDPI
DOI: 10.3390/s23010486

关键词

smart manufacturing; predictive maintenance; transfer learning; vibration sensors; manufacturing dataset; defect classification; piezoelectric sensor; mems sensor; rpm; autoencoder

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Smart manufacturing systems are the future of manufacturing applications, aiming to detect faults quickly and reduce maintenance costs. This research analyzes four datasets from sensors in manufacturing testbeds, using deep learning techniques to identify sensor defects. The study also evaluates the performance of traditional and ML-based forecasting models for predicting sensor data. The findings demonstrate that careful selection of training data and transfer learning can improve predictive failure classification, enabling predictive maintenance.
Smart manufacturing systems are considered the next generation of manufacturing applications. One important goal of the smart manufacturing system is to rapidly detect and anticipate failures to reduce maintenance cost and minimize machine downtime. This often boils down to detecting anomalies within the sensor data acquired from the system which has different characteristics with respect to the operating point of the environment or machines, such as, the RPM of the motor. In this paper, we analyze four datasets from sensors deployed in manufacturing testbeds. We detect the level of defect for each sensor data leveraging deep learning techniques. We also evaluate the performance of several traditional and ML-based forecasting models for predicting the time series of sensor data. We show that careful selection of training data by aggregating multiple predictive RPM values is beneficial. Then, considering the sparse data from one kind of sensor, we perform transfer learning from a high data rate sensor to perform defect type classification. We release our manufacturing database corpus (4 datasets) and codes for anomaly detection and defect type classification for the community to build on it. Taken together, we show that predictive failure classification can be achieved, paving the way for predictive maintenance.

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