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• W4377044119 abstract "Abstract The product functions (PFs) extracted by local mean decomposition (LMD) of the noisy signal contain obvious energy‐concentrated pulses. As a result, the conventional amplitude threshold filtering used in wavelet transform (WT)‐based and empirical mode decomposition (EMD)‐based de‐noising methods is no longer applicable. To address this issue, an improved signal de‐noising method is proposed by using the multi‐level local mean decomposition (ML‐LMD), the superposition and recombination (SR) of high‐order PFs, the outlier detection, and waveform smoothing (OD‐WS) to remove noise by eliminating the pulse components. The proposed method's superior noise reduction performance is demonstrated through theoretical analysis and experimental verification. Compared to well‐known methods like WT‐based and EMD‐based de‐noising, the results show that the proposed method has significant comparative advantages in reducing noise in rolling bearing signals." @default.
• W4377044119 created "2023-05-19" @default.
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• W4377044119 date "2023-05-17" @default.
• W4377044119 modified "2023-10-14" @default.
• W4377044119 title "An improved method for signal de‐noising based on multi‐level local mean decomposition" @default.
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• W4377044119 doi "https://doi.org/10.1002/eng2.12677" @default.
• W4377044119 hasPublicationYear "2023" @default.
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