Research on Gearbox Fault Diagnosis Based on LMD Energy Entropy

Xu Le; Li Wei; Zhang Bo; Zhu Yubin; Lang Chaonan

doi:10.16578/j.issn.1004.2539.2022.10.004

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Research on Gearbox Fault Diagnosis Based on LMD Energy Entropy

Theory·Research | 更新时间：2022-11-05

- Research on Gearbox Fault Diagnosis Based on LMD Energy Entropy
- Journal of Mechanical Transmission Vol. 46, Issue 10, Pages: 24-29(2022)
- 作者机构：
  
  1.江苏师范大学工程实训中心，江苏徐州 221116
  2.中国矿业大学机电工程学院，江苏徐州 221116
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2022.10.004
  CLC：
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徐乐,李伟,张博等.基于LMD能量熵的齿轮箱故障诊断研究[J].机械传动,2022,46(10):24-29.

Xu Le,Li Wei,Zhang Bo,et al.Research on Gearbox Fault Diagnosis Based on LMD Energy Entropy[J].Journal of Mechanical Transmission,2022,46(10):24-29.
徐乐,李伟,张博等.基于LMD能量熵的齿轮箱故障诊断研究[J].机械传动,2022,46(10):24-29. DOI： 10.16578/j.issn.1004.2539.2022.10.004.

Xu Le,Li Wei,Zhang Bo,et al.Research on Gearbox Fault Diagnosis Based on LMD Energy Entropy[J].Journal of Mechanical Transmission,2022,46(10):24-29. DOI： 10.16578/j.issn.1004.2539.2022.10.004.

摘要

针对小样本情况下齿轮箱复合故障特征难以识别的问题，提出了基于局部均值分解（Local mean decomposition，LMD）能量熵的齿轮箱故障诊断方法。利用LMD方法对齿轮箱振动信号进行处理，得到若干个PF分量；利用不同状态下齿轮箱振动信号在频域区间内分布不均的特性，计算出分量能量在频域区间离散的值，即LMD能量熵；通过不同状态下LMD能量熵的分布进行了齿轮箱故障分类。结果显示，在小样本情况下，基于LMD能量熵方法能够精确地对齿轮箱故障类型进行特征提取和故障诊断，也表明了该方法对齿轮箱故障诊断的优越性。

Abstract

Aiming at the problem that it is difficult to identify the composite fault characteristics of gearboxes in the case of small samples, a local mean decomposition(LMD) gearbox fault diagnosis method based on energy entropy is proposed. The LMD method is used to process the gearbox vibration signal to obtain several PF components；the dispersion value of component energy in the frequency domain is calculated using the uneven distribution of gearbox vibration signals in different states, which is the LMD energy entropy; the gearbox fault classification is carried out through the distribution of LMD energy entropy in different states. The experimental results show that in the case of small samples, the feature extraction and fault diagnosis of gearbox fault types can be accurately carried out based on the LMD energy entropy method, which also shows the superiority of this method in gearbox fault diagnosis.

关键词

齿轮箱局部均值分解能量熵故障诊断

Keywords

GearboxLocal mean decompositionEnergy entropyFault diagnosis

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