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。     

船舶电力系统同步相量测量装置的研制

实现一种适用于船舶电力系统的同步相量测量装置,介绍了时钟同步模块、数据采集模块和数据处理模块。采用基于Nuttall窗函数的双谱线插值FFT算法对电力谐波进行分析,并对IEEE C37.118协议进行扩展,使之适用于船舶电力系统同步相量参数测量。用标准信号源对装置进行测试,相量幅值误差小于0.2%,相位误差小于0.2°。满足电力系统实时监控的要求。     

岩溶区河流下小断面隧道施工

依据西南成品油管线隧道穿越岩溶区河流施工的工程实践，介绍了岩溶区河流下隧道施工时特殊情况下的岩石爆破方法，提供了隧道发生涌水、围岩变形和穿越溶洞时的施工办法和有关措施。提出了岩溶区河流下隧道施工的建议。     

地质雷达探测溶洞等地质体机理研究及实例分析

阐述了地质雷达的探测原理，对雷达探测溶洞等地质体的可行性进行了分析，提出了提高雷达判别准确度的相关措施。对雷探技术用于隧道短距离超前地质预报有一定的借鉴。     

单轴并联式混合动力总成的设计

设计完成了驱动电机与电控共轨柴油机结合而成的混合动力汽车动力总成,该总成用于单轴并联式混合动力汽车。驱动电机既是电驱动装置,又是起动、发电一体化系统(ISG),基于MC 68H9S12DP256B单片机,研制了该总成的控制系统,通过CAN总线实现了联合控制,以电池充放电平衡和发动机燃油经济性为基础,应用了一种模糊逻辑控制策略,实现了混合动力系统的扭矩分配与不同工作模式以及模式间的切换,该总成能够在所要求的工作模式下运转。     

浅论全面预算管理在勘察设计单位中的有效应用

全面预算管理在国内外企业中得到了广泛应用。勘察设计单位改制后,也纷纷引入全面预算管理。该文探讨全面预算管理在勘察设计单位中的应用过程,并提出在实施过程容易出现的问题及解决对措。