港口使费控制的策略研究

介绍了港口费收的分类和计算,然后介绍了中国港口的收费规则,分析了存在的问题,提出了港口费收改革的思路与建议,对如何控制港口使费提出可行的措施。     

最优速度跟踪控制策略在地铁ATO系统中的应用研究

精准度是列车自动运行系统(ATO)的重要性能指标,文章提出地铁列车ATO系统中的一种高精度速度跟踪控制策略,通过PID控制器参数调整、增加死区控制和附加扰动控制,实现速度跟踪精准度的优化调整。经过项目的反复验证和数据分析,充分证实此控制策略可以极大提高ATO控制的精准度,同时对地铁列车的服务质量有进一步改善。     

道路收费政策典型案例分析

2005年英国政府宣布建立“交通创新基金”,后来人们才意识到所谓“创新”意味着道路收费,而与改进公共交通系统没有任何关系。2年之后,英国政府面临对轨道交通系统进行巨额投资,而该系统被认为是在大都市地区实施一系列道路收费项目的前提。因此,当前有必要对世界范围内的道路收费政策加以研究,以找出有效的道路收费系统所具有的特征以及能够成功实施应具备的条件。     

公路货运超限治理中的利益博弈分析

通过对公路货运中政府、道路运营者、运输商及其后相关利益关系进行分析,按现有环境下管理方与运输商之间超限运输治理的博弈,提出超限治理过程中对治理策略的选择应着力降低治理成本,这有助于提高管理方的治理激励.     

沈阳地铁一号线沈阳站站暗挖段洞桩施工技术研究

结合沈阳地铁一号线沈阳站站暗挖段洞桩施工实例,对洞桩施工技术进行探讨,通过采用改良桩机和研发自动泥浆分离系统进行机械作业,并采取钢筋笼分节直螺纹连接,成功地完成了地铁车站洞桩施工。     

视频智能交通系统的设计与实现

随着高速公路和计算机技术的发展,智能交通系统开始被应用于高速公路系统中.论文介绍了视频智能交通系统以及它在苏嘉杭高速公路系统中的应用.     

Automatic guidance control of an articulated all-wheel-steered vehicle

This paper presents automatic guidance control of a single-articulated all-wheel-steered vehicle being developed by the Korea Railroad Research Institute. The vehicle has an independent drive motor on each wheel except for the front axle. The guidance controller is designed so that the vehicle follows the given reference path within permissible lateral deviations. We use a three-input/three-output linearised model derived from the nonlinear dynamic model of the vehicle. For the purpose of simplifying the controller and making it tunable, we consider a decentralised control configuration. We first design a second-order decoupling compensator for the two-input/two-output system that is strongly coupled and then design a first-order controller for each decoupled feedback loop by using the characteristic ratio assignment method. The simulation results for the nonlinear dynamic model indicate that the proposed control configuration successfully achieves the design objectives.     

运营中地铁变形的动态监测方法研究

结合深圳地铁2号线东延线施工实际,对与之空间垂直相交的地铁4号线实施动态变形监测。论述了隧道变形的影响及实施动态监测的原则,探讨了隧道变形监测的布点方案及动态监测方法,并对监测结果进行了分析,提出了加强现场安全管理措施。     

一种新型船舶机舱训练中心的构造方案

本文介绍了利用先进的信息技术构建起来的、以教学训练为目的的、将网络技术和计算机辅助教学方法集成到传统的机舱控制系统中而构建成的一种新型自动化机舱监控系统.     

System convergence — The potential for an integrated road transport environment

This chapter discusses the potential for co-ordinating developments in Road Transport Informatics (RTI) in what could otherwise be a number of fragmented approaches, in order to approach what the DRIVE programme calls the Integrated Road Transport Environment (IRTE). The discussion is presented with particular reference to European developments such as the PROMETHEUS and DRIVE research programmes, but is intended to encompass possible progress towards worldwide standardisation.The role of consensus formation in Europe in the DRIVE projects SECFO and TARDIS is described. The importance of dynamic route guidance and of automatic debiting systems are highlighted in identifying the likely impetus towards the implementation of RTI systems. Finally, some outstanding issues are presented briefly, and the possible emergence of international standards leading to compatible systems worldwide is discussed.