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新疆大学 电气工程学院, 新疆 乌鲁木齐 830017
Received:04 October 2025,
Revised:2025-12-29,
Accepted:03 January 2026,
Published:25 January 2026
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刘磊,穆塔里夫·阿赫迈德,木巴来克·都尕买提,邵曾智. 基于参数优化VMD及改进CNN的风电齿轮故障诊断方法[J]. 新疆大学学报(自然科学版中英文),2026,43(1):38-50.
Liu Lei,Ahemaide Mutalifu,Dugamaiti Mubalaike,Shao Zengzhi. Wind Turbine Gear Fault Diagnosis Method Based on Parameter-Optimized VMD and Improved CNN[J]. Journal of Xinjiang University(Natural Science Edition in Chinese and English),2026,43(1):38-50.
刘磊,穆塔里夫·阿赫迈德,木巴来克·都尕买提,邵曾智. 基于参数优化VMD及改进CNN的风电齿轮故障诊断方法[J]. 新疆大学学报(自然科学版中英文),2026,43(1):38-50. DOI: 10.13568/j.cnki.651094.651316.2025.10.04.0001.
Liu Lei,Ahemaide Mutalifu,Dugamaiti Mubalaike,Shao Zengzhi. Wind Turbine Gear Fault Diagnosis Method Based on Parameter-Optimized VMD and Improved CNN[J]. Journal of Xinjiang University(Natural Science Edition in Chinese and English),2026,43(1):38-50. DOI: 10.13568/j.cnki.651094.651316.2025.10.04.0001.
风电齿轮因长期高速运转且运行环境复杂,早期故障信号特征微弱易被掩盖,致使传统故障诊断方法精度较低.为解决此问题,本文提出一种基于改进旗鱼算法(ISFO)优化变分模态分解(VMD)与卷积神经网络(CNN)的风电齿轮故障诊断方法.首先,将Logistic混沌映射初始化、 Lévy飞行理论和遗传算法优化理论引入旗鱼算法(SFO)中,提出了基于混合策略的ISFO算法,有效解决了算法的局部最优问题.其次,利用ISFO算法优化VMD参数分解信号,提取相关系数最大模态分量的故障特征信息,并利用短时傅里叶变换(STFT)构建时频图.最后,将时频图输入优化后的CNN训练以完成故障诊断分类.实验对比和分析表明,所提方法在公共数据集和自测数据集上均表现出较高的诊断精度,平均准确率达98.67%,能够有效解决风电齿轮故障诊断问题.
Wind turbine gears
operating at high speeds under complex environmental conditions
exhibit subtle early-stage fault signals that are easily masked
resulting in low accuracy with conventional diagnostic methods. To address this issue
this paper proposes a fault diagnosis method for wind turbine gears based on an improved sailfish optimizer (ISFO) algorithm optimising variational modal decomposition (VMD) and convolutional neural networks (CNN). Firstly
the ISFO algorithm is enhanced by incorporating initialisation via the Logistic chaotic map
optimisation principles from Lévy flight theory
and genetic algorithm techniques. This yields an ISFO algorithm based on hybrid strategies
effectively resolving the algorithm's local optimum issue. Subsequently
using ISFO algorithm refines VMD parameter decomposition of signals
extracting fault feature information from the modal component with the highest correlation coefficient. A short-time Fourier transform (STFT) is then employed to construct a time-frequency map. Finally
the time-frequency map is input into an optimised CNN for fault diagnosis classification. Experimental comparisons and analyses demonstrate that the proposed method achieves high diagnostic accuracy on both public and self-test datasets
with an average accuracy rate of 98.67%
effectively addressing wind turbine gear fault diagnosis challenges.
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