Study on the Fault Diagnosis of Generator Unit based on WPD-Neural Network

Liu Zhigang; Zhao Xiaoyan; Zhang Tao; Ao Baolin; Li Simin; Dang Qiqian

doi:10.16578/j.issn.1004.2539.2018.08.035

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Study on the Fault Diagnosis of Generator Unit based on WPD-Neural Network

更新时间：2022-10-20

- Study on the Fault Diagnosis of Generator Unit based on WPD-Neural Network
- Vol. 42, Issue 8, Pages: 179-182(2018)
- 作者机构：
  
  1. 河南工业职业技术学院机械工程学院
  2. 华北水利水电大学机械学院
  3. 郑州机械研究所有限公司
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2018.08.035
  CLC：
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[1]刘志刚,赵晓燕,张涛,敖宝林,李四敏,党齐乾.基于小波包-神经网络的电厂发电机组故障诊断研究[J].机械传动,2018,42(08):179-182.

Liu Zhigang, Zhao Xiaoyan, Zhang Tao, et al. Study on the Fault Diagnosis of Generator Unit based on WPD-Neural Network. [J]. 42(8):179-182(2018)
[1]刘志刚,赵晓燕,张涛,敖宝林,李四敏,党齐乾.基于小波包-神经网络的电厂发电机组故障诊断研究[J].机械传动,2018,42(08):179-182. DOI： 10.16578/j.issn.1004.2539.2018.08.035.

Liu Zhigang, Zhao Xiaoyan, Zhang Tao, et al. Study on the Fault Diagnosis of Generator Unit based on WPD-Neural Network. [J]. 42(8):179-182(2018) DOI： 10.16578/j.issn.1004.2539.2018.08.035.

摘要

电厂发电机组齿轮箱通常工作在高速高负载和润滑不良的恶劣环境中,研究对其工作过程的有效监测和故障诊断具有重要意义。针对齿轮箱故障信号的非平稳特征,提出了基于小波包分解和神经网络的故障诊断方法。以故障信号小波包分解后的能量信息作为输入向量,以BP神经网络作为分类器对其进行识别和诊断。通过对齿轮箱的正常工况、齿面磨损、缺齿和复合故障等4种类型的分析表明,提出的小波神经网络故障诊断方法可以识别齿轮箱的故障类型。

Abstract

While gearbox in power plant generator set often work in the environment of high speed,high load and poor lubrication,it is of great significance to study the effective monitor and fault diagnosis of working condition. As to nonstationary feature of fault signal in gearbox,the fault diagnosis method based on wavelet packet decomposition（ WPD） and BP neural network is presented. The measured fault signal is decomposed by the wavelet packet to obtain the energy feature information as the input vector,and the BP neural network is used as the classifier to identify and diagnose it. Through analysis of gearbox under four types of normal condition,tooth surface wear,missing teeth and compound fault,show that the fault diagnosis method can distinguish the fault type in gearbox.

关键词

发电机组故障诊断小波包分解BP神经网络

Keywords

Generator unitFault diagnosisWavelet packet decompositionBP neural network

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