Rolling bearing plays an important role in rotating machinery and its working condition directly affects the equipment efficiency. While dozens of methods have been proposed for real-time bearing fault diagnosis and monitoring, the fault classification accuracy of existing algorithms is still not satisfactory. This work presents a novel algorithm fusion model based on principal component analysis and Dempster-Shafer evidence theory for rolling bearing fault diagnosis. It combines the advantages of the learning vector quantization (LVQ) neural network model and the decision tree model. Experiments under three different spinning bearing speeds and two different crack sizes show that our fusion model has better performance and higher accuracy than either of the base classification models for rolling bearing fault diagnosis, which is achieved via synergic prediction from both types of models.
Digital Object Identifier (DOI)
Published in Journal of Sensors, Volume 2017, Issue 6737295, 2017.
© 2017 Xuemei Yao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Yao, X., Li, S., & Hu, J. (2017). Improving Rolling Bearing Fault Diagnosis by DS Evidence Theory Based Fusion Model. Journal of Sensors, 2017, 1–14. https://doi.org/10.1155/2017/6737295