Yong Li - IEEE Xplore Author Profile

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Large electromechanical equipment typically operates under low-speed, heavy-duty conditions, significantly increasing the likelihood of bearing failures. The reduced speed diminishes the frequency of fault impacts per unit time, rendering them prone to being obscured within intricate vibration signals. To address this challenge, a novel fault weak feature extraction method is proposed for low-spee...Show More
Various kinds of sensing data can be acquired for smart fault detection. Each signal source has spatial attributes and strong correlations exist between different data sources. However, most of the existing fault detection models are established in the vector domain, which would destroy the structure information embedded within multisource data. Besides, the nonideal data, especially strong-noise ...Show More
The majority of present data-driven fault diagnosis methods for mine gearboxes are constructed in vector space, which fails to properly benefit from the structural information of 2D fault features like wavelet time-frequency images. Besides, the presence of mislabeled data can greatly impact the capability of fault diagnosis. Hence this article develops a prior-weighted support matrix machine (PWS...Show More