A Multi-Granularity Supervised Contrastive Framework for Remaining Useful Life Prediction of Aero-engines
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866913934495186944 |
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| author | He, Zixuan Kong, Ziqian Chen, Zhengyu Zhan, Yuling Que, Zijun Xu, Zhengguo |
| author_facet | He, Zixuan Kong, Ziqian Chen, Zhengyu Zhan, Yuling Que, Zijun Xu, Zhengguo |
| contents | Accurate remaining useful life (RUL) predictions are critical to the safe operation of aero-engines. Currently, the RUL prediction task is mainly a regression paradigm with only mean square error as the loss function and lacks research on feature space structure, the latter of which has shown excellent performance in a large number of studies. This paper develops a multi-granularity supervised contrastive (MGSC) framework from plain intuition that samples with the same RUL label should be aligned in the feature space, and address the problems of too large minibatch size and unbalanced samples in the implementation. The RUL prediction with MGSC is implemented on using the proposed multi-phase training strategy. This paper also demonstrates a simple and scalable basic network structure and validates the proposed MGSC strategy on the CMPASS dataset using a convolutional long short-term memory network as a baseline, which effectively improves the accuracy of RUL prediction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_00461 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Multi-Granularity Supervised Contrastive Framework for Remaining Useful Life Prediction of Aero-engines He, Zixuan Kong, Ziqian Chen, Zhengyu Zhan, Yuling Que, Zijun Xu, Zhengguo Machine Learning Artificial Intelligence Systems and Control Accurate remaining useful life (RUL) predictions are critical to the safe operation of aero-engines. Currently, the RUL prediction task is mainly a regression paradigm with only mean square error as the loss function and lacks research on feature space structure, the latter of which has shown excellent performance in a large number of studies. This paper develops a multi-granularity supervised contrastive (MGSC) framework from plain intuition that samples with the same RUL label should be aligned in the feature space, and address the problems of too large minibatch size and unbalanced samples in the implementation. The RUL prediction with MGSC is implemented on using the proposed multi-phase training strategy. This paper also demonstrates a simple and scalable basic network structure and validates the proposed MGSC strategy on the CMPASS dataset using a convolutional long short-term memory network as a baseline, which effectively improves the accuracy of RUL prediction. |
| title | A Multi-Granularity Supervised Contrastive Framework for Remaining Useful Life Prediction of Aero-engines |
| topic | Machine Learning Artificial Intelligence Systems and Control |
| url | https://arxiv.org/abs/2411.00461 |