我国铁道车辆设计CAD应用软件系统的研究与开发

本文论述了我国铁道车辆结构设计 CAD 应用软件系统——THCAD 及 TKCAD 的设计原理,并介绍了其基本结构和功能特点.     

铁路客车高速化对其空调系统的发展要求探讨

分析了国外典型高速客车空气调节系统的特点,并结合客车高速化对其空调系统的影响,指出了我国高速客车空调系统的发展要求及思路。     

无人驾驶城轨列车控制系统的研究与开发

介绍了无人驾驶运输系统对列车控制系统的特殊要求,在有人驾驶列车控制系统的基础上,提出了无人驾驶控制系统的解决方案。     

水性涂料在铁道车辆中的应用

综述我国铁道车辆涂料的应用现状、与涂料相关的环保要求以及铁道车辆涂料的特点和存在的问题,简述水性涂料的发展概况及加快水性涂料在铁道车辆中应用方面的建议。     

基于Box-Cox-TQR概率密度的铁路运用车保有量预测方法

合理的铁路运用车保有量，对满足铁路货运需求，提高货车运用效率，降低运营成本等有重要作用.考虑铁路运输系统复杂的内外部环境及其动态变化特性，对影响运用车保有量因素定性分析；提出了粗糙集属性约简、灰色关联分析、逐步回归方法相结合的主要影响因素识别方法.以此为基础，建立了基于 Box-Cox变换分位数回归(Box-Cox-TQR)和核密度估计相结合的概率密度预测模型.以国家铁路局运用车保有量实际数据为基础，进行预测试验.结果表明，利用主要因素识别的方法符合目标值的运动变化规律，预测结果具有良好的精度.此外，概率密度预测比点预测、区间预测传递出更多信息，为管理决策提供更多准确有用信息.     

优化空车调配问题

首先阐述了车站空车调配问题对编制车站日班工作计划的意义，通过利用卸后空车对配空车问题进行优化研究，给出配空车问题的数学模型。     

Automated driving and autonomous functions on road vehicles

In recent years, road vehicle automation has become an important and popular topic for research and development in both academic and industrial spheres. New developments have received extensive coverage in the popular press, and it may be said that the topic has captured the public imagination. Indeed, the topic has generated interest across a wide range of academic, industry and governmental communities, well beyond vehicle engineering; these include computer science, transportation, urban planning, legal, social science and psychology. While this follows a similar surge of interest – and subsequent hiatus – of Automated Highway Systems in the 1990s, the current level of interest is substantially greater, and current expectations are high. It is common to frame the new technologies under the banner of ‘self-driving cars’ – robotic systems potentially taking over the entire role of the human driver, a capability that does not fully exist at present. However, this single vision leads one to ignore the existing range of automated systems that are both feasible and useful. Recent developments are underpinned by substantial and long-term trends in ‘computerisation’ of the automobile, with developments in sensors, actuators and control technologies to spur the new developments in both industry and academia. In this paper, we review the evolution of the intelligent vehicle and the supporting technologies with a focus on the progress and key challenges for vehicle system dynamics. A number of relevant themes around driving automation are explored in this article, with special focus on those most relevant to the underlying vehicle system dynamics. One conclusion is that increased precision is needed in sensing and controlling vehicle motions, a trend that can mimic that of the aerospace industry, and similarly benefit from increased use of redundant by-wire actuators.     

基于失效率变化量的燃料电池轿车可靠性分配优化

基于某燃料电池轿车用户道路采集的故障数据,分析了该车的可靠性统计特性。结合燃料电池轿车整车可靠性指标的要求,提出了基于失效率变化量的可靠性分配层次分析法,对燃料电池轿车进行可靠性指标分配优化。优化结果为提高整车及其关键零部件的可靠性和轻量化开发提供了理论依据,也为制定整车及其关键零部件的可靠性增长目标提供了技术基础。     

一种电动汽车车载高频智能充电机的设计研究

采用单片机和充电集成电路进行充电机的设计,不但能够实现对一般的蓄电池进行充电,而且还能够实现相应的过压、温度等保护功能,从而可以充分发挥蓄电池的性能,延长电池的使用寿命,并避免简易充电器在充电时可能对电池造成损害的情况发生。     

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在“公共交通优先发展”已经成为共识的大背景下，各界都在努力探索如何实现这一理念。香港是世界上公共交通最为发达的地区之一，本文从几个方面介绍了其公共交通运营管理模式，希望对全国有学习和借鉴的价值。本文首先介绍了香港政府对铁路、巴士的监管机制，相关部门职责和监管方法，然后介绍了铁路和巴士的经营理念与运营模式，最后介绍了香港公交线网的制定原则和限制私家车的政策措施。