Supplementary file 1_AI algorithms and IoT platforms for anomaly and failure prediction in industrial machinery—systematic review.pdf

Predictive Maintenance (PdM) focuses on anticipating potential failures in industrial machines by the monitoring key parameters. Artificial Intelligence (AI) provides algorithms that can be used for this purpose. Specialized literature mentions that some companies need to adopt more proactive and predictive strategies in managing of industrial maintenance. This study aims to conduct a Systematic Literature Review (SLR) on Artificial Intelligence algorithms and software and IoT platforms used for anomaly and failure prediction. The method includes of six main phases: (i) defining the research questions; (ii) conducting a search process; (iii) establishing exclusion and inclusion criteria; (iv) performing a quality assessment of studies; (v) collecting data; and (vi) analyzing the data. The findings show that the main AI techniques for PdM are classified as: (i) machine Learning-based methods; (ii) neural networks-based methods; and (iii) knowledge transfer-based methods. Nine software and IoT technologies were identified to support maintenance operations. Additionally, it is discussed how Machine Learning and Deep Learning algorithms perform well in fault classification, prediction, Remaining Useful Life (RUL) estimation, and diagnostic tasks. They can also be applied in earlier stages, such as data preprocessing and feature extraction. Finally, it is shown that knowledge transfer can improve AI algorithms when sudden changes occur in data and their relationships. In conclusion, the AI technologies identified can significantly contribute to predicting failures in industrial machinery.