Abstract
The bogie plays a crucial role in ensuring the safe and comfortable operation of high-speed trains (HST). Fault localization is a valuable approach for scheduling vehicle maintenance plans and ensuring the safe operation of high-speed rail transportation. However, in real train operating conditions, two limitations complicate the accurate fault localization of bogies using deep learning: substantial railway differences and a shortage of labeled data. This paper proposes a novel multi-sensor graph transfer network (3MAGTN), equipped with a multi-attention mechanism, to achieve end-to-end localization of faults in HST bogies across various running railways. The designed multi-attention mechanism exhibits multi-level, multi-dimensional, and multi-focus attention capabilities, while operating at three hierarchical levels: worker, extractor, and optimizer. It enhances fault location accuracy at the local scale by prioritizing essential features and improves cross-railway capability at the global scale. Moreover, an adaptive multi-objective optimization strategy is designed to distinguish perplexing data and utilize unlabeled data efficiently. The effectiveness of 3MAGTN is demonstrated by sophisticated and imbalanced mutual transfer experiments across three vehicle running railways, with the average location and identification accuracy of 30 tests being 86.10% and 92.71%, respectively.
Get full access to this article
View all access options for this article.
