An early bearing fault analysis based on improved whale algorithm to optimize variational mode decomposition

Xiaoxia Gao; Gaohua Chen; Zemin Liu

doi:10.1117/12.3011083

1 December 2023 An early bearing fault analysis based on improved whale algorithm to optimize variational mode decomposition

Xiaoxia Gao, Gaohua Chen, Zemin Liu

Author Affiliations +

Proceedings Volume 12940, Third International Conference on Control and Intelligent Robotics (ICCIR 2023); 129400M (2023) https://doi.org/10.1117/12.3011083
Event: Third International Conference on Control and Intelligent Robotics (ICCIR 2023), 2023, Sipsongpanna, China

Abstract

A fault diagnosis method for rolling bearing based on improved Whale Optimization Algorithm (WOA) is proposed to address the nonlinearity, non-stationarity, and unclear fault characteristics of the rolling bearing vibration signals. Firstly, adaptive inertia weight, nonlinear convergence factor, and Levy flight theory are introduced into WOA, and an improved WOA algorithm based on a hybrid strategy is proposed to enhance the optimization speed and accuracy. Then, fuzzy entropy is used as the fitness function of the WOA algorithm to optimize the parameters of Variational Mode Decomposition (VMD), obtaining the optimal combination of the number of modal components and penalty factor. Finally, the optimized parameter combination is applied to perform VMD on the bearing fault signals, yielding several modal components. The improved WOA algorithm effectively avoids mode mixing in the optimized VMD decomposition, whereas Empirical Mode Decomposition (EMD) exhibits mode mixing. This further validates the superiority of the proposed method. The research results provide an effective improvement approach for existing rolling bearing fault diagnosis techniques.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Xiaoxia Gao, Gaohua Chen, and Zemin Liu "An early bearing fault analysis based on improved whale algorithm to optimize variational mode decomposition", Proc. SPIE 12940, Third International Conference on Control and Intelligent Robotics (ICCIR 2023), 129400M (1 December 2023); https://doi.org/10.1117/12.3011083

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KEYWORDS

Mathematical optimization

Modal decomposition

Nonlinear optimization

Vibration

Analytical research

Algorithms

Aliasing

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