Research of the Fault Feature Extraction of the Transmission Weak Abnormal Sound based on the Sample Entropy

Wu Chao; Sun Huer; Liang Xiaohua

doi:10.16578/j.issn.1004.2539.2017.09.025

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Research of the Fault Feature Extraction of the Transmission Weak Abnormal Sound based on the Sample Entropy

更新时间：2022-10-20

- Research of the Fault Feature Extraction of the Transmission Weak Abnormal Sound based on the Sample Entropy
- Vol. 41, Issue 9, Pages: 124-129(2017)
- 作者机构：
  
  1. 中北大学机械与动力工程学院
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2017.09.025
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[1]武超,孙虎儿,梁晓华.基于样本熵的变速器微弱异响故障特征提取研究[J].机械传动,2017,41(09):124-129.

Wu Chao, Sun Huer, Liang Xiaohua. Research of the Fault Feature Extraction of the Transmission Weak Abnormal Sound based on the Sample Entropy. [J]. 41(9):124-129(2017)
[1]武超,孙虎儿,梁晓华.基于样本熵的变速器微弱异响故障特征提取研究[J].机械传动,2017,41(09):124-129. DOI： 10.16578/j.issn.1004.2539.2017.09.025.

Wu Chao, Sun Huer, Liang Xiaohua. Research of the Fault Feature Extraction of the Transmission Weak Abnormal Sound based on the Sample Entropy. [J]. 41(9):124-129(2017) DOI： 10.16578/j.issn.1004.2539.2017.09.025.

摘要

针对某变速器新产品在特定挡位转速区间存在的微弱异响,运用非线性动力学参数样本熵提取变速器在不同挡位下的运行特征;通过实例分析了不同参数对样本熵提取齿轮故障的影响,选择了合适的参数计算样本熵;在此参数下研究了正常挡位与故障挡位样本熵和近似熵随转速变化情况。研究表明,输入轴转速升高,正常挡位样本熵和近似熵变化不大,而故障挡位样本熵和近似熵减小,且样本熵相比近似熵可更有效提取变速器齿轮特征。并针对样本熵异常的某变速器4挡齿轮故障进行了阶次包络分析,实现了变速器齿轮故障的判别。

Abstract

Aiming at the weak abnormal sound of the new transmission products in the specific speed range of gear,the nonlinear of the dynamic parameter sample entropy is used to extract the operating characteristics of the transmission under different gears. The influence of different parameters on the sample entropy extraction is researched. The appropriate parameters are selected to calculate the sample entropy. In this parameter,the sample entropy and approximate entropy of the normal gear and fault gear are analyzed. The results show that with the input shaft rotational speed increasing,the sample entropy of the normal gear changes little,but the sample entropy of the fault gear decreases. And sample entropy compared to approximate entropy can be more effective extraction of transmission gear characteristics. And the order envelope analysis is carried out for the failure of the fourth gear of a transmission with abnormal sample entropy,and the fault diagnosis of transmission gear is realized.

关键词

样本熵变速器特征提取阶次分析包络解调

Keywords

Sample entropyTransmissionFeature extractionOrder analysisEnvelope demodulation

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