变分模态分解在地铁车辆熔断器非短路损坏故障分析

Damage fault analysis for non-short-circuit of subway vehicle fuse based on VMD method

非短路损坏故障不但增加车辆运营经济成本,而且影响运营线路的运营计划。该文针对熔断器非短路故障频发的地铁车辆,基于NI作为检测硬件设计一套故障诊断测试系统,并应用Dasylab软件搭建系统的采集部分,通过对列车运营时段的测试数据进行整体统计分析,应用VMD剔除趋势项,对偏离均值的异常数据应用VMD分析,最终找到熔断器非短路故障频发原因。结果表明,该文所设计的故障诊断测试系统与分析方法是有效并可靠的,可为工程实用提供参考。

Non-short-circuit damage usually causes the addition of economic cost during vehicles operating,still, this affects the operating line plan or strategy. In this paper, a set of fault diagnosis test system is designed based on NI instruments as hardware-detection for metro-vehicles with frequent non-short-circuit faults in fuses. The data collection of the system have been built by Dasylab software. Under the overall statistical analysis of the test data during train operation, the trend items are eliminated by VMD, VMD analysis is applied to the anomaly data which has the deviated mean values, to work out the causes of the frequent nonshort-circuit faults of the fuse. The results show that the fault diagnosis test system and the designed analysis method in this paper is effective and reliable, which can provide reference for practical engineering.