关于客货列车平稳操纵的探讨

重载货物列车和扩编旅客列车的提速,使列车所受冲击力加剧,断钩的可能性增加,列车平稳操纵的难度加大。因此探讨平稳操纵的经验,分析造成列车冲动、断钩的原因是具有现实意义的。     

对列车起动时平稳操纵的探讨

推导出列车起动时主手柄在1位停留时间的计算公式,为列车起动时平稳操纵提供科学依据.     

重载组合列车操纵方案优化探讨

针对既有重载组合列车装备,分析了组合列车冲动大的原因,探讨了多台机车同步牵引重载列车的操纵方案,为保证列车运行的安全性和可靠性提供参考。     

遗传算法在列车优化操纵曲线方面的应用

以牵引计算理论为基础,结合列车运行过程中的要求,构建了以能耗、时分误差、限速等为目标的列车节能控制模型,采用实数遗传算法,通过Visual Basic编程对此问题进行求解。在已知列车编组的条件下,以DF4(客)型机车的牵引、动力制动时的能耗曲线为基础,得到了给定运行时间、距离条件下的优化操纵曲线。     

数字仿真技术在模拟列车牵引操纵中的应用

介绍了列车仿真系统的定义,通过计算机车牵引力、列车运行阻力及列车的制动阻力得出了列车运行中距离、速度、加速度与时间的关系,即列车运行状态的数学模型。论述了计算机仿真模型的建立及其程序设计,并对监控装置记录的数据和程序计算结果进行了比较,结果表明,计算机仿真模型基本能反映列车的运行状态。     

浅谈利用"牵引辅助制动法"实现列车平稳操纵

针对铁路高速、重载在客观上存在的操纵难点,提出了利用“牵引辅助制动法”实现旅客列车平稳操纵,对该方法在起车、运行、调速、过分相、专运等方面的操纵进行了介绍。     

列车牵引计算及操纵示意图软件

介绍了西南交通大学开发的列车牵引计算及操纵示意图软件的特点、功能、安装等内容。     

客运机车分配阀的试验研究

从JZ-7型空气制动机本身的结构出发,提出了客运机车分配阀的方案,研制了新的分配阀主阀。试验表明,该客运机车分配阀有效地改善了制动机常用制动性能,且具有结构简单、维修方便的特点,达到了改善旅客列车纵向冲动的目的。     

列车节能运行第三论断

通过构造适当的分析模型,并以ND5型和SS7型机车分别牵引不同质量的空、重货车为计算条件,对列车节能运行第三论断进行了分析论证,并揭示出其成立的本质。     

借助空气联动阀实现旅客列车牵引的平稳操纵

1　问题的提出　　我段是客运机务段,为适应提速需要,配属ＤＦ4Ｄ型机车39台,ＤＦ4Ｄ型准高速机车8台,担当北到济南,南到南京,东到连云港,西到商邱的51对客车(包括两对特快)的牵引任务。根据2000年5月1日开始执行的新《铁道部机车操作规程》中对内燃机务段旅客列车操纵第37条的     

高速列车半主动悬挂系统控制方法研究综述

阐述了我国高速列车横向悬挂采用半主动悬挂控制横向振动问题的必要性,介绍了高速列车横向半主动悬挂控制所采用的几种控制方法,并进行了比较,指出模糊控制方法是优先选用的控制方法。     

动力分散内燃液传摆式动车组网络控制系统

介绍了为三茂铁路设计的动力分散内燃液传摆式动车组的网络控制系统的组成、系统功能特点以及系统显示策略。系统已完成试验室联调和现场装车联调以及电磁兼容试验,结果表明系统达到了技术要求。     

浅析200km/h速度等级客运机车的功率选择

针对我国铁路客运急需 2 0 0km/h速度等级机车的现状 ,分别按照《列车牵引计算规程》和《高速试验列车技术条件》的规定进行分析计算 ,从列车的剩余加速度、列车阻力等方面论证了2 0 0km/h速度等级机车的功率选择 ,并提出了 6轴机车的概念设计模型     

强侧风对高速列车运行安全性的影响及其控制

介绍了德国的强侧风Nowcasting预警系统、日本的强侧风WINDAS实时列车控制系统及我国正在开发的车载侧风安全预警和控制系统,并对3个系统进行了比较,认为在我国高速列车上安装侧风安全预警和控制系统会使列车在强侧风情况下的安全性和经济性得到很好的平衡。     

Sector coupling potential of wind-based hydrogen production and fuel cell train operation in regional rail transport in Berlin and Brandenburg

As the transport sector is ought to be decarbonized, fuel-cell-powered trains are a viable zero-tailpipe technology alternative to the widely employed diesel multiple units in regional railway service on non-electrified tracks. Carbon-free hydrogen can be provided by water-electrolysis from renewable energies. In this study we introduce an approach to assess the potential of wind-based hydrogen for use in adjacent regional rail transport by applying a GIS approach in conjunction with a site-level cost model. In Brandenburg about 10.1 million train-km annually could be switched to fuel cell electric train operation. This relates to a diesel consumption of appr. 9.5 million liters today. If fuel cell trains would be employed, that translated to 2198 annual tons hydrogen annually. At favorable sites hydrogen costs of approx. 6.40 €/kg - including costs of hydrogen refueling stations - could be achieved. Making excess hydrogen available for other consumers, would further decrease hydrogen production costs.     

Drive train dynamics assessment and speed controller design in variable speed wind turbines

This paper deals with the speed controller design in DFIG based wind turbines, and investigates stability and performance of the drive train dynamics against different control strategies. It is shown that speed controller design based on the single mass drive train model may result in unstable mechanical modes, because it ignores the dynamics of the flexible shaft. Then, another control approach, known as feedforward compensation of the shaft torsional torque, is examined. It is shown that this control method results in poorly damped oscillations of torsional torque and turbine speed during the transient conditions. The open loop transfer function from the electromagnetic torque to the generator speed contains a dual quadratic function representing the dynamics of flexible shaft. The dual quadratic function comprises resonant and anti-resonant frequencies that greatly affect the stability of the drive train dynamics. Next, a step-by-step procedure for designing the speed controller based on the two-mass drive train model is proposed. The proposed speed controller provides stable closed loop system, zero tracking error, low-frequency disturbance rejection, and open-loop gain attenuation at the resonant frequency. At the end, performance of the proposed controller is investigated by the time domain simulations.     

LKJ2000型监控装置在南疆线的运用和改进

介绍LKJ2 0 0 0型监控装置在南疆线运用情况 ,包括初装LKJ2 0 0 0时解决的几个问题 ,运用中出现的问题和解决措施以及LKJ2 0 0 0在南疆线强化机车运行监控方面实现的一些功能。