4.5 Article

A Fault Diagnosis Method of Rolling Bearing Based on Attention Entropy and Adaptive Deep Kernel Extreme Learning Machine

Journal

ENERGIES
Volume 15, Issue 22, Pages -

Publisher

MDPI
DOI: 10.3390/en15228423

Keywords

rolling bearing; fault diagnosis; empirical wavelet transform; attention entropy; marine predators algorithm; deep kernel extreme learning machine

Categories

Funding

  1. scientific research foundation of the Young Scholar Project of Cyrus Tang Foundation
  2. Shaanxi Province Key Research and Development Plan [2021NY-181]
  3. State Power Investment Corporation Limited [TC2020SD01]
  4. National Natural Science Foundation of China [51909222, 51509210]

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This paper proposes a rolling bearing diagnosis method by combining the attention entropy and adaptive deep kernel extreme learning machine (ADKELM). The method employs wavelet threshold denoising and empirical wavelet transform (EWT) to extract features, and optimizes the hyperparameters using the marine predators algorithm (MPA) for adaptive changes. The optimal ADKELM model is determined by analyzing the fault diagnosis performances.
To address the difficulty of early fault diagnosis of rolling bearings, this paper proposes a rolling bearing diagnosis method by combining the attention entropy and adaptive deep kernel extreme learning machine (ADKELM). Firstly, the wavelet threshold denoising method is employed to eliminate the noise in the vibration signal. Then, the empirical wavelet transform (EWT) is utilized to decompose the denoised signal, and extract the attention entropy of the intrinsic mode function (IMF) as the feature vector. Next, the hyperparameters of the deep kernel extreme learning machine (DKELM) are optimized using the marine predators algorithm (MPA), so as to achieve the adaptive changes in the DKELM parameters. By analyzing the fault diagnosis performances of the ADKELM model with different kernel functions and hidden layers, the optimal ADKELM model is determined. Compared with conventional machine learning models such as extreme learning machine (ELM), back propagation neural network (BPNN) and probabilistic neural network (PNN), the high efficiency of the method proposed in this paper is verified.

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