推荐星级:
  • 1
  • 2
  • 3
  • 4
  • 5

基于时频分析法的高速列车轨道电路故障诊断

更新时间:2020-07-20 11:28:08 大小:628K 上传用户:xiaohei1810查看TA发布的资源 标签:时频分析法 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

资料介绍

针对现有高速列车轨道电路故障诊断方法大多采用电压电流信号有效值,没有充分利用其丰富的频域信息的问题,为提高轨道电路故障诊断系统的性能,提出基于电压电流实时信号时频分析的故障诊断方法.基于短时傅里叶变换(Short-Time Fourier Transform,STFT)生成频谱特征;根据可分性准则进行特征频带选择;采用支持向量机(Support Vector Machine,SVM)进行故障特征分类.基于现场数据的试验结果表明该方法有效.

Most of the existing fault diagnosis methods for track circuits are developed using root-mean- square values of voltage and current signals, but the plenty of frequency domain information is often ignored. To improve the performance of fault diagnosis system of track circuits, a fault diagnosis method is proposed on the basis of time-frequency analysis of real-time voltage and current signals. The frequency spectrum features are generated by Short-Time Fourier Transform (STFT), and the characteristic frequency bands are classified by Support Vector Machine (SVM). The test results based on the field data show that the method is effective.

部分文件列表

文件名 大小
基于时频分析法的高速列车轨道电路故障诊断.pdf 628K

全部评论(0)

暂无评论

上传资源 上传优质资源有赏金

  • 打赏
  • 30日榜单

推荐下载