短路试验开关在地铁直流短路试验中的应用

介绍了地铁直流短路试验中利用短路试验开关进行短路试验的方法,分析得出该实验方法能够减少对运行中的直流馈线开关的危害,并能据实反映出实际短路情况,有较好的应用价值。     

ZPW-2000A和8信息在站内电码化系统中的综合应用

结合兰武线（兰州至武威南）黄羊滩站站内电码化系统的工程设计，介绍了ZPW-2000A和8信息在站内电码化系统中综合应用的系统方案。     

我国相控电力机车主电路的优化和简统化探讨

从标准化、系列化、模块化的要求出发,针对我国批量生产的各型相控机车主电路进行分析和优化,简统出4种形式（客、货运各2种）,为今后简化我国相控机车设计和更新改造程序、提高应用管理的效益提供相关技术依据.     

基于嵌入式专家系统的机车电路仿真系统的研究

在介绍嵌入式专家系统的基础上,提出了基于专家系统、计算机技术、数据库技术的"机车电路仿真系统"的研制方法,包括知识的框架表示,推理模型的建立,数据库文件及控制矩阵的建立等。并以SS4G机车电路为例,描述了动态仿真的工作过程。     

交流传动地面功率试验及问题探讨

介绍了交流传动地面功率试验的主要结果,并就异步牵引电动机、逆变器、滤波电路及保护中的一些问题进行了探讨,提出交流传动机车应进一步研究解决的问题。     

Influence of the track quality and of the properties of the wheel–rail rolling contact on vehicle dynamics

This work describes an analytical approach to determine what degree of accuracy is required in the definition of the rail vehicle models used for dynamic simulations. This way it would be possible to know in advance how the results of simulations may be altered due to the existence of errors in the creation of rolling stock models, whilst also identifying their critical parameters. This would make it possible to maximise the time available to enhance dynamic analysis and focus efforts on factors that are strictly necessary. In particular, the parameters related both to the track quality and to the rolling contact were considered in this study. With this aim, a sensitivity analysis was performed to assess their influence on the vehicle dynamic behaviour. To do this, 72 dynamic simulations were performed modifying, one at a time, the track quality, the wheel–rail friction coefficient and the equivalent conicity of both new and worn wheels. Three values were assigned to each parameter, and two wear states were considered for each type of wheel, one for new wheels and another one for reprofiled wheels. After processing the results of these simulations, it was concluded that all the parameters considered show very high influence, though the friction coefficient shows the highest influence. Therefore, it is recommended to undertake any future simulation job with measured track geometry and track irregularities, measured wheel profiles and normative values of the wheel–rail friction coefficient.     

2036型电子摆设计原理初探

概述了2036型电子摆的运行系统原理,结构设计要点和电子电路设计原理,分析计算了对电子摆性能具有重大影响的装配间隙h_1及硅油液面高度值h_3,从而正确确定了摆锤阻尼力与h对温度的函数关系,这对指导设计与生产具有一安的实用价值。     

大功率GTO使用时的两个关键技术

介绍了大功率ＧＴＯ使用时其吸收电路和驱动电路的设计要求，并阐述了几种不同捐收电路以及驱动电路吉应注意的隔离、抗干扰以及ＧＴＯ状态检测等问题。     

起常见25Hz轨道电路故障的分析和处理方法简

针对常见细铁屑短路绝缘节造成的25Hz轨道电路故障,进行理论分析,总结判断方法及处理程序,提出冷封胶封堵的方法,减少故障发生率,达到压缩故障延时的目的.     

简谈ZPW-2000A无绝缘移频轨道电路故障判断和处理方法

基于我国铁路区间广泛使用的ZPW-2000A无绝缘移频自动闭塞制式,提出快速判断方法及处理过程,及时解决运用过程中出现的常见设备故障,达到压缩故障延时的目的。