城市轨道交通系统车辆走行部故障诊断技术研究  

Research on the diagnosis technology for faults of vehicle running part in urban rail transit

作　　者：李朋 LI Peng(Second Branch Company of Beijing Municipal Metro Operation Company Limited,Beijing 100043,China)

机构地区：[1]北京市地铁运营有限公司运营二分公司,北京100043

出　　处：《现代城市轨道交通》2024年第9期37-43,共7页Modern Urban Transit

摘　　要：为提高安全性,城市轨道交通通常采用高强度、大容量的运输方式进行交通运输,并在启用之前进行严密的可靠性测试。城市轨道交通车辆在高速运行时,走行部极易发生零部件损坏、转向架性能退化等故障。为解决该问题,文章提出一种适用于城市轨道交通走行部故障的在线监测和诊断系统,并使用广义共振和共振解调相结合的方法,研究微弱机械故障中冲击信号的提取和广义共振变换,提出一种智能化的诊断模式。应用分析表明,该智能诊断模式可获得更加精准的故障诊断、健康评估结果。In urban rail transit,the transport means with high-intensity and high-capacity are commonly used to improve safety,and stringent reliability testing would be carried out before commissioning.When the urban rail transit vehicles are running at high speed,the running part is prone to parts damage,bogie performance degradation,among other failures.To solve this issue,this article proposes an on-site on-line detection and monitoring system for failures of urban rail transit running parts,and uses a combination of generalized resonance and resonance demodulation to study the extraction of impact signals and generalized resonance transformations of weak mechanical failures to accurately diagnose the failures of bearings,gears and wheel tread.At the same time,an intelligent diagnostic model is proposed for the issue that the running parts of urban rail transit vehicles are prone to fracture failure of bearing cages and frames.The application analysis shows that this intelligent diagnostic model could obtain more accurate fault diagnosis,health assessment and fault prediction results。

关 键 词：城市轨道交通 广义共振 共振解调 车辆走行部 故障诊断 

分 类 号：U231.92[交通运输工程—道路与铁道工程]