基于QPSO⁃MPE的滚动轴承故障识别方法
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TH165.3; TP301.6

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国家自然科学基金资助项目(51675253);中国博士后科学基金资助项目(2016M592857);甘肃省自然科学基金资助项目(1610RJZA004)


Bearing Fault Identification Based on Quantum⁃Behaved Particle Swarm Optimization and Multi⁃scale Permutation Entropy
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    摘要:

    为准确辨识滚动轴承故障类型,提出了一种基于量子粒子群优化多尺度排列熵(quantum?behaved particle swarm optimization and multi?scale permutation entropy, 简称QPSO?MPE)的滚动轴承故障识别方法。首先,对滚动轴承的原始振动信号进行集成经验模态分解(ensemble empirical mode decomposition,简称EEMD),得到一系列内禀模态分量(intrinsic mode function,简称IMF)和一个趋势项,并以峭度作为度量指标筛选出含有主要故障特征信息的IMF来重构振动信号;然后,利用量子粒子群优化算法对多尺度排列熵的关键参数进行优化,得到其模型计算重构信号的多尺度排列熵,从而构建轴承故障的多尺度排列熵特征集;最后,将故障特征集输入GG(Gath?Geva)模糊聚类算法进行聚类识别。实验结果表明,基于QPSO?MPE的滚动轴承故障识别方法可实现滚动轴承典型故障的准确辨识,证明了QPSO?MPE在故障特征提取方面的有效性。

    Abstract:

    In order to accurately identify the different fault types of rolling bearings, a fault recognition method for rolling bearing based on quantum-behaved particle swarm optimization and multi-scale permutation entropy (QPSO-MPE) is proposed. Firstly, the original vibration signal of the rolling bearing is decomposed by ensemble empirical mode decomposition (EEMD), and a series of intrinsic mode functions (IMFs) and a trend term are obtained. The IMF component containing the main fault feature information is selected by kurtosis as the metric to reconstruct the vibration signal. Then, the key parameters of MPE are optimized by the QPSO algorithm, and the multi-scale permutation entropy of the reconstructed signals are calculated by the optimized MPE model to construct the multi-scale permutation entropy feature set of bearing faults. Finally, the fault feature set is input to GG (Gath-Geva) fuzzy clustering algorithm for clustering recognition. The experiment results show that the QPSO-MPE based fault recognition method can accurately identify the typical faults of rolling bearings and verify the effectiveness of QPSO-MPE in fault feature extraction.

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  • 在线发布日期: 2021-03-03
  • 出版日期: 2021-02-28
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