CIPS按计划自动办理进路的原理

按计划自动执行是编组站综合集成自动化系统CIPS的标志性功能,本文将技术要点分解为自动择机和自动择路,并详细阐述了其原理和方法,归结为信息联锁技术。进一步诠释了管控一体化的理念和解决方案,以及应用管控一体化的必要性和必然性。     

综合单价风险评估研究及应用

工程量清单计价模式下,建筑市场的公开竞争促使施工企业科学地运用决策分析以获取项目。清单招标一般都采用单价合同,投标人要承担组价的全部风险,而出于种种原因,综合单价中的风险费用一直未得到投标人的充分重视。此文在深入理解综合单价的基础上,系统地分析了报价风险,以此为基础构建风险分析和评估数学模型;再以随机抽样为主要手段,运用蒙特卡罗模拟技术对模型进行风险分析,得出综合单价风险概率分布,从而为投标人的报价决策提供依据。综合单价报价风险决策方法的研究对施工企业投标报价风险分析和评估具有积极的意义。     

电动汽车用整车控制单元平台设计与开发

针对电动汽车种类繁多、对整车控制功能需求各异、缺乏整车控制单元平台的现状,在对电动汽车控制功能进行深入分析的基础上,以32位汽车级芯片和扭矩控制为核心,设计开发了电动汽车整车控制单元软件和硬件平台,大大提高了电动汽车整车控制单元的开发效率。     

西门子地铁信号控制系统轨旁ATP控制单元综述

简单介绍了西门子LZB 700M地铁信号控制系统的基础配置,以此为基础详细叙述了ATP系统的构成,轨旁ATP单元设备的配置及其功能,轨旁ATP控制单元在列车自动运行防护监控中遵循的原则及在西门子列控系统中实现的功能。     

汽车车速巡航模糊控制

汽车巡航控制系统是一种汽车辅助驾驶系统，可以在40～200km／h的车速范围内，启动该系统，人为设定一个车速，驾驶员将不需再操控油门，系统即可自动控制汽车恒速行驶。由于汽车巡航控制系统的强非线性，以及受外界负荷的扰动、复杂的运行工况等因素影响，该系统较适合采用模糊自整定HD控制方法，以保证系统具有良好的动态稳定性。     

电子式安全带预紧装置的检修

介绍了电子式安全带预紧装置故障代码的提取方法、故障代码的含义及故障代码的清除，并指出了检修时应注意事项。     

Simulation on progressive collapse behaviour of whole ship model under extreme waves using idealized structural unit method

To ensure the safety of navigating ship, working loads and structural load-carrying capacity are two important aspects. In the present paper, a total simulation system combing load calculation and structural collapse analysis is applied to simulate progressive collapse behaviour of a single-hull Kamsarmax type bulk carrier. A three dimensional singularity distribution method is adopted to calculate pressure distribution with time history. A mixed structural model, collapse part simulated by ISUM elements and remaining part by elastic FEM elements with relative coarse mesh, is proposed for collapse analysis. Progressive collapse behaviour obtained by ISUM is good agreement with that by nonlinear software package, MARC. However, the calculation time of ISUM analysis is about 1/70 of MARC analysis. The applicability to structure system, high accuracy and sufficient efficiency of ISUM had been demonstrated.     

A driver advisory system with dynamic losses for passenger electric multiple units

Driver advisory systems, instructing the driver how to control the train in an energy efficient manner, is one the main tools for minimizing energy consumption in the railway sector. There are many driver advisory systems already available in the market, together with significant literature on the mathematical formulation of the problem. However, much less is published on the development of such mathematical formulations, their implementation in real systems, and on the empirical data from their deployment. Moreover, nearly all the designed driver advisory systems are designed as an additional hardware to be added in drivers’ cabin. This paper discusses the design of a mathematical formulation and optimization approach for such a system, together with its implementation into an Android-based prototype, the results from on-board practical experiments, and experiences from the implementation. The system is based on a more realistic train model where energy calculations take into account dynamic losses in different components of the propulsion system, contrary to previous approaches. The experimental evaluation shows a significant increase in accuracy, as compared to a previous approach. Tests on a double-track section of the Mälaren line in Sweden demonstrates a significant potential for energy saving.     

船舶电缆自动化敷设系统设计与实现

在船舶电缆敷设过程中,很难借助有效的工装提高劳动效率,低空间的高强度作业存在严重的安全风险。以船舶电缆自动化敷设系统为分析对象,介绍系统组成和系统接口,采用比例积分微分(Proportion Integration Differentiation,PID)算法计算系统行程,通过PROFINET总线完成数据传输,以人机界面(Human Machine Interface,HMI)实现系统性能要求。在风电安装平台上的实际运用表明,该系统可解决造船行业劳动力成本高和安全风险大的问题。     

防止电力机车进入无电单元(区)的安全预警方法

针对目前计划内接触网停电时电力机车进入无电单元(区)的问题,提出了基于动态停电作业区域数据对比库语音、屏幕鼠标点击坐标和高清成像分析进行“三元素二阶段”处理对比方法,以减少人员操作失误和损失。机车/车次信息及对应机车属性先由操作人员办理接发列预告(办理闭塞)的语音识别获取,再通过TDCS/CTC终端机非上位机获取并核对机车/车次信息及对应机车属性信息,第1阶段获取排列列车进路及调车进路口呼内容语音识别所关联的设备名称与无电单元(区)信息进行对比,此步可以预防错误操作;第2阶段可获取屏幕鼠标点击坐标对应的设备名称、并通过高清成像分析计算机联锁界面上已排列好的进路光带所包含的设备名称,进行对比后,报警提示改正错误操作即取消进路操作。通过以上方法能有效防止电力机车进入无电单元(区),可为铁路现场相关业务领域提供参考。