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Fault diagnosis of wind turbine bearings based on improved dung beetle optimizer optimized LSTM
  • Wei WEI,
  • yucen yuan
Wei WEI
Youth Science Foundation of Lanzhou Jiaotong University

Corresponding Author:[email protected]

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yucen yuan
Youth Science Foundation of Lanzhou Jiaotong University
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Abstract

Due to the nonlinearity, non-stationarity and noise interference of the rolling bearing fault signals of wind turbines, the extraction of features is challenging. This paper proposes a fault diagnosis method for wind turbine bearings based on the improved dung beetle optimizer (IDBO) optimized Long Short-Term Memory (LSTM) network. Firstly, Levy flight strategy and T-distribution perturbation strategy are integrated into the traditional dung beetle optimizer (DBO) to optimize the algorithm. The optimized IDBO algorithm solves the problems of low convergence accuracy and easy entrapment into local optima in the traditional dung beetle algorithm. Secondly, the IDBO algorithm is combined with the long short-term memory method to build the IDBO-LSTM fault diagnosis model. The advantage of fewer parameters in this algorithm enables the model to reduce the overall number of parameters and computational complexity while ensuring the accuracy of temporal feature extraction. Finally, this pa-per takes the bearing open dataset of Case Western Reserve University as an example to compare the proposed method with other models through optimization tests. The experimental results show that the IDBO-LSTM model outperforms other models, with a fault diagnosis accuracy rate of 98.3%. This demonstrates the superiority of the proposed improved dung beetle optimizer and effectively improves the accuracy of fault diagnosis for rolling bearings of wind turbines.
25 Sep 2024Submitted to Wind Energy
26 Sep 2024Submission Checks Completed
26 Sep 2024Assigned to Editor
26 Sep 2024Review(s) Completed, Editorial Evaluation Pending
16 Oct 2024Reviewer(s) Assigned