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基于深度主动学习的MVB网络故障诊断方法

杨岳毅 王立德 王冲 王慧珍 李烨

杨岳毅, 王立德, 王冲, 王慧珍, 李烨. 基于深度主动学习的MVB网络故障诊断方法[J]. 西南交通大学学报, 2022, 57(6): 1342-1348, 1385. doi: 10.3969/j.issn.0258-2724.20210195
引用本文: 杨岳毅, 王立德, 王冲, 王慧珍, 李烨. 基于深度主动学习的MVB网络故障诊断方法[J]. 西南交通大学学报, 2022, 57(6): 1342-1348, 1385. doi: 10.3969/j.issn.0258-2724.20210195
YANG Yueyi, WANG Lide, WANG Chong, WANG Huizhen, LI Ye. Fault Diagnosis Method Based on Deep Active Learning For MVB Network[J]. Journal of Southwest Jiaotong University, 2022, 57(6): 1342-1348, 1385. doi: 10.3969/j.issn.0258-2724.20210195
Citation: YANG Yueyi, WANG Lide, WANG Chong, WANG Huizhen, LI Ye. Fault Diagnosis Method Based on Deep Active Learning For MVB Network[J]. Journal of Southwest Jiaotong University, 2022, 57(6): 1342-1348, 1385. doi: 10.3969/j.issn.0258-2724.20210195

基于深度主动学习的MVB网络故障诊断方法

doi: 10.3969/j.issn.0258-2724.20210195
基金项目: 中国国家铁路集团有限公司科技研究开发计划(N2020J007)
详细信息
    作者简介:

    杨岳毅(1987—),男,博士研究生,研究方向为列车通信网络故障诊断与健康管理,E-mail:17117405@bjtu.edu.cn

    通讯作者:

    王立德(1960—),男,教授,博士生导师,研究方法为列车通信网络,E-mail:ldwang@bjtu.edu.cn

  • 中图分类号: U285.5

Fault Diagnosis Method Based on Deep Active Learning For MVB Network

  • 摘要:

    多功能车辆总线MVB (multiple vehicle bus)用于传输重要的列车运行控制指令和监视信息,准确地诊断MVB网络故障是列车智能运维的基础,为此,提出一种将主动学习和深度神经网络相结合的MVB网络故障诊断方法. 该方法采用堆叠去噪自编码器自动提取MVB信号物理波形特征,并将该特征用于训练深度神经网络来实现MVB网络故障模式分类;基于不确定性和可信度的高效主动学习方法,可解决实际应用中标记样本不足和人工标记成本高昂的问题,使用少量标记训练样本就能得到高性能的深度神经网络模型. 实验结果表明:为达到90%以上分类准确率,所提方法只需要600个标记训练样本,小于随机采样方法所需标记训练样本数的2 800个;在相同标记训练样本数下,所提方法在3种性能指标下均优于传统方法.

     

  • 图 1  EMD单线连接常见故障类型

    Figure 1.  Typical fault modes of EMD single-line connection

    图 2  SDAE模型训练过程

    Figure 2.  Training process of SDAE model

    图 3  深度主动学习方法架构

    Figure 3.  Framework of deep active learning method

    图 4  MVB网络实验平台

    Figure 4.  MVB experimental platform

    图 5  不确定性和可信度相结合的主动学习方法的对比实验结果

    Figure 5.  Comparison results of active learning methods based on uncertainty and credibility

    图 6  与基于不确定性的主动学习方法的对比实验结果

    Figure 6.  Comparison results with different active learning methods based on uncertainty estimation

    图 7  查询过程中带标签训练样本的类别分布

    Figure 7.  Class distributions of labeled training samples in query process

    表  1  MVB网络常见故障

    Table  1.   Typical faults of MVB network

    故障名称故障描述
    断路故障  MVB电缆或连接器断开,部分设备离线
    短路故障  MVB两根电缆或连接器针脚之间短接,导致MVB网络通信中断
    终端电阻缺失  因人为或外力因素造成终端电阻缺失,出现严重的阻抗不匹配,造成信号严重畸变
    收发器电路故障  因元器件老化等原因造成在此设备处阻抗突变,从而造成信号畸变
    连接器
    老化
     连接器老化导致接触电阻增大,造成传输阻抗不匹配,信号物理波形质量下降
    电缆性能退化  因安装不当、老化等原因,造成电缆传输特性阻抗发生变化,造成信号物理波形质量下降,导致MVB网络通信性能退化
    下载: 导出CSV

    表  2  不同已标记训练样本数下的分类准确率

    Table  2.   Classification accuracy under different numbers of labeled samples %

    方法已标记训练样本数/个
    3006001100160021002600
    AL_EN[14]58.8673.1484.9385.9189.5591.71
    AL_SM[14]64.2778.0991.9693.4894.5595.46
    HEAL_EN70.5787.4693.6196.6898.1498.46
    AL_RAND57.2163.1679.1182.6885.2588.61
    本文方法80.4690.3496.7597.5299.1499.43
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-03-17
  • 修回日期:  2021-07-28
  • 网络出版日期:  2022-08-20
  • 刊出日期:  2021-11-03

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