移动闭塞下列车运行系统的研究

构造移动闭塞条件下的计算机列车运行仿真系统,介绍系统总体结构,对列车实际运行间隔进行分析,对各功能模块进行描述.进一步分析移动闭塞条件下列车追踪运行间隔模型和列车运行自动控制子系统的功能等,对系统实际运用能够起到指导作用.     

模糊控制在列车停靠站制动系统中的应用

针对国内列车停靠站台时比较混乱的现象,提出采用模糊控制来使列车停在确定位置以便乘客上车的方法.基于模糊控制的基本原理,阐述了模糊控制器的基本结构和实现方法.     

旅客列车票额分配及周转图自动处理系统的设计开发

论述旅客列车票额分配方案重要性及现状,介绍运用现代化信息技术手段实现旅客列车票额分配及周转图自动生成的设计目标、方案、系统结构及技术特点.     

编辑部关于发表“国家中长期交通运输规划摘要”的决定——国家《中长期铁路网规划》内容简介

交通运输事关国民经济发展和百姓生活的最基本需求．与中国经济的成长一样，我国交通运输业也历经了从传统的计划经济向市场经济转型的过程．作为国民经济发展的基础，和其他行业相比，交通运输具有准公共特性．为真正将国家意志体现到交通运输能力供给中，遵循本届政府决策，建设项目“规划先行”的原则，国家发展和改革委员会会同铁道部、交通部等有关单位，按照全面建设小康社会宏伟目标的要求，以科学发展观为指导，在充分考虑我国土地、人口等资源分布的基础上，将交通运输发展规划理论与交通发展实践相结合，组织编制了《中长期铁路网规划》、《高速公路网规划》、《农村公路建设规划》、《长江三角洲、珠江三角洲、渤海湾三区域沿海港口建设规划（2004年-2010年）》和《环渤海京津冀地区、长江三角洲地区、珠江三角洲地区城际轨道交通网规划》，现已完成并正式颁布实施．上述5项规划从不同层面反映了国家交通资源的空间布局与国家生产力布局的结合，国家综合交通体系发展方向和重点；体现了在市场经济条件下，如何结合中国的具体实际充分发挥各种运输方式的技术经济优势，做好运输资源的配置，并更加突出了效率与公平．对于加快我国铁路与高速公路的发展，促进综合交通网络的形成，加速区域现代综合运输体系建设，全面增强运输普遍服务能力，提升综合交通的生产力水平和服务水平，都具有十分重要的指导作用．     

全自动无人驾驶地铁列车安全型网络控制系统设计

针对全自动无人驾驶地铁列车智能化、高安全性、高可靠性的特点,文章阐述了其网络控制系统的整体设计策略,从系统架构、平台架构及全自动控制核心功能等方面重点介绍其设计特点与功能,并结合实例分析了列车在无人场景下系统联动功能的设计。     

全自动运行信号系统与洗车机接口分析研究

全自动运行系统自动洗车功能的实现,依托于信号系统与洗车机之间的接口配合。在全面分析洗车机类型的基础上,针对移动式洗车方式进行详细接口设计与分析,描述自动端洗和自动非端洗模式下的清洗场景,同时考虑手动洗车模式和降级洗车模式,从而提出一套完整可行的接口技术方案。     

地铁列车客室门远程诊断系统的应用

客室门是地铁列车上使用非常频繁的设备,也是故障率较高的部件。客室门远程诊断系统的开发和应用,可以实现实时监测门系统电机、门控器以及锁闭结构的工作情况和工作参数;并通过智能故障分析手段,预测车门系统故障;在车门系统未进入故障时提前检修和排除亚健康问题,降低门系统的故障率,提升门系统的可靠性。     

Distributed model predictive control for vessel train formations of cooperative multi-vessel systems

Recently, the cooperative control of multiple vessels has been gaining increasing attention because of the potential robustness, reliability and efficiency of multi-agent systems. In this paper, we propose the concept of Cooperative Multi-Vessel Systems (CMVSs) consisting of multiple coordinated autonomous vessels. We in particular focus on the so-called Vessel Train Formation (VTF) problem. The VTF problem considers not only cooperative collision avoidance, but also grouping of vessels. An MPC-based approach is proposed for addressing the VTF problem. A centralized and a distributed formulation based on the Alternating Direction of Multipliers Method (ADMM) are investigated. The distributed formulation adopts a single-layer serial iterative architecture, which gains the benefits of reduced communication requirements and robustness against failures. The impacts of information updating sequences and responsibility parameters are discussed. We furthermore analyze the scalability of the proposed method. Simulation experiments of a CMVS navigating from different terminals in the Port of Rotterdam to inland waterways are carried out to illustrate the effectiveness of our method. The proposed method successfully steers the vessels from different origins to form a vessel train. Due to the effective communication, vessels can timely respond to the velocity changes that others make. After the formation is formed, the distances between vessels become constant. The results show the potential to use CMVSs for inland shipping with enhanced safety.     

On particulate emissions from moving trains in a tunnel environment

Increasing attention is being paid to airborne particles in railway environments because of their potential to adversely affect health. In this study, we investigate the contribution of moving trains to both the concentration and size distribution of particles in tunnel environments. Real-time measurements were taken with high time-resolution instruments at a railway station platform in a tunnel in Stockholm in January 2013. The results show that individual trains stopping and starting at the platform substantially elevate the particulate concentrations with a mobility diameter greater than 100 nm. Two size modes of the particulate number concentrations were obtained. A mode of around 170 nm occurs when a train moves, while the other mode peaks at about 30 nm when there is no train in the station. By using principal component analysis (PCA), three contributing sources were identified on the basis of the classification of the sizes of the particles, namely railway-related mechanical wear, suspension due to the movement of trains and sparking of electric-powered components. It is concluded that the particulate matter released by individual moving trains is a key contributor to fine particles (100–500 nm) on the railway platform in a tunnel.     

高速列车曲线通过迭代学习半主动控制研究

高速列车通过曲线时,车辆动力学性能恶化。为改善高速列车通过不同曲线的动力学性能,研究了抗蛇形减振器半主动控制对高速列车曲线通过时动力学性能的影响。根据列车运行具有重复性等特点,结合大数据,设计了PD型迭代学习控制算法,并进行控制算法和多体动力学软件的半主动控制仿真,将结果与无控制的仿真结果进行对比。结果显示:经过10次迭代控制后,列车过曲线时的平稳性指标、脱轨系数、轮重减载率、轮轨横向力指标都有所改善。