Application of MCKD-cyclic Domain Demodulation Method in Gearbox Fault Diagnosis

Wang Zhijian; Wang Junyuan; Zeng Zhiqiang; Zhang Jiping

doi:10.16578/j.issn.1004.2539.2017.01.040

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Application of MCKD-cyclic Domain Demodulation Method in Gearbox Fault Diagnosis

更新时间：2022-10-20

- Application of MCKD-cyclic Domain Demodulation Method in Gearbox Fault Diagnosis
- Vol. 41, Issue 1, Pages: 183-188(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.1004.2539.2017.01.040
  CLC：
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[1]王志坚,王俊元,曾志强,张纪平.MCKD-循环域解调方法在齿轮箱故障诊断中的应用[J].机械传动,2017,41(01):183-188.

Wang Zhijian, Wang Junyuan, Zeng Zhiqiang, et al. Application of MCKD-cyclic Domain Demodulation Method in Gearbox Fault Diagnosis. [J]. 41(1):183-188(2017)
[1]王志坚,王俊元,曾志强,张纪平.MCKD-循环域解调方法在齿轮箱故障诊断中的应用[J].机械传动,2017,41(01):183-188. DOI： 10.16578/j.issn.1004.2539.2017.01.040.

Wang Zhijian, Wang Junyuan, Zeng Zhiqiang, et al. Application of MCKD-cyclic Domain Demodulation Method in Gearbox Fault Diagnosis. [J]. 41(1):183-188(2017) DOI： 10.16578/j.issn.1004.2539.2017.01.040.

摘要

多调制源、多载波信号的循环自相关解调分析存在交叉项的干扰,这使循环自相关解调方法的实际应用产生局限性。提出了基于最大相关峭度反褶积（Maximum correlated Kurtosis deconvolution,MCKD）和循环自相关解调方法相结合的齿轮箱故障诊断方法,先通过MCKD对原信号降噪以便提取感兴趣的周期成分,再对降噪后的周期信号进行循环自相关解调分析,此方法有效地抑制了多调制源、多载波对循环平稳结果带来的交叉项干扰,提高了分析的可靠性。将该方法运用于齿轮箱故障诊断中,成功地从振动信号中分离出故障源。

Abstract

The cross- term interference caused by multi- modulator and multi- carrier makes it limited the use of the cyclic autocorrelation demodulation. A new method called the MCKD（ Maximum correlated Kurtosis Deconvolution）- cyclic domain demodulation is proposed. Firstly,the strong background noise of the original signal is decreased by the MCKD method in order to extract the interest period component,the above given signal is processed by the cyclic autocorrelation function demodulation. The new method can decrease the cross- term interference caused by multi- modulator and multi- carrier and improve the reliability of the analysis. As the application of the MCKD- cyclic domain demodulation theory in fault diagnosis,the method is used to extract fault feature from vibration signals successfully.

关键词

MCKD循环自相关解调故障诊断周期信号

Keywords

MCKDCyclic autocorrelation demodulationFault diagnosisPeriodic signal

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