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• W2286877141 abstract "The extraction of ideal age feature is a challenging task in vibration-based bearing remaining useful life (RUL) estimation. Aiming at this problem, a new approach is proposed on the basis of time–frequency representation (TFR) and supervised dimensionality reduction. Firstly, S transform and Gaussian pyramid are employed to obtain TFRs at multiple scales. Textural features of TFRs are used as the high-dimensional features. Then, a two-step supervised dimensionality reduction technique, i.e. principal component analysis (PCA) plus linear discriminant analysis, is employed to reduce the dimensionality, in which the target dimension and number of classes are taken as variable parameters. Finally, the simple multiple linear regression model is utilized to estimate the RUL. Experimental results indicate that the proposed approach outperforms the methods using traditional statistical features and/or PCA. Additionally, variable conditions of load and speed should be considered in the future to further improve the proposed approach." @default.
• W2286877141 created "2016-06-24" @default.
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• W2286877141 date "2016-05-01" @default.
• W2286877141 modified "2023-10-12" @default.
• W2286877141 title "Bearing remaining useful life estimation based on time–frequency representation and supervised dimensionality reduction" @default.
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• W2286877141 doi "https://doi.org/10.1016/j.measurement.2015.11.047" @default.
• W2286877141 hasPublicationYear "2016" @default.
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