关于信号高新技术设备应用BZG型电子保险器的建议及其可靠性分析

通过对BZG型电子保险器技术特性、工作原理的介绍,就其在纯电子高新技术设备中应用的可靠性和安全性进行了分析。     

常导型高速磁悬浮列车中悬浮电磁铁的程序化优化设计

常导型高速磁悬浮列车中的悬浮电磁铁同时承担着悬浮、推进、发电等多项任务,其几何参数直接影响到列车电磁系统的性能。在对悬浮电磁铁进行优化设计时,需要综合考虑直线同步电机和直线发电机这2个子系统的性能。为此引入全局化的目标函数对系统的总体性能进行控制,并以有限元分析和计算作为基础,采用程序化优化设计方法对悬浮电磁铁的几何参数进行自动调整,经过多次迭代计算可得到优化设计的结果。     

莫口站技改信号配合施工方案分析比较与实施

本文通过对莫口站施工方案的分析，说明既有车站改造时选择必须满足信号联锁的施工才能确保工程顺利的实施。     

变频试验电源在电机试验中的应用

介绍了一种在电机试验中应用的新型变频试验电源.通过对比分析变频试验电源与常规机组试验电源对同一型号电机的空载和堵转试验结果及分别对同一台电机的叠频温升试验结果,证明了新型变频试验电源在电机试验工作中的成功应用.     

浅析某轮发电副机滑油变质故障

本文首先简单介绍了本船发电柴油机的型号、一些主要技术指标、滑油系统的功能及其组成等;并说明了引起发电柴油机滑油压力下降的原因,本文着重论述了发电机油底壳生成污泥的主要原因。最后,讲述了对发电柴油机滑油系统维护管理的一些基本要求。     

太阳能热电装置的热效率和火用效率分析

本文建立了太阳能热电装置的基本分析模型,运用有限单元法对装置多种工况下的相关参数进行了计算。对装置的热电效率和火用效率进行了分析。研究结果表明,随着输入太阳能的增大,太阳能热电装置的热电效率明显增大,但火用效率基本稳定。     

PID智能模糊自整定控制器在SG水位控制中的应用

为提高蒸汽发生器水位控制效果,设计一种基于模糊控制原理的模糊PID参数自适应控制器,根据偏差和偏差变化率来实时调整参数,水位控制实验结果表明,这种模糊控制器比常规PID控制器有更好的控制效果,明显改善了系统的动态性能和稳态性能。     

A continuous-flow-intersection-lite design and traffic control for oversaturated bottleneck intersections

Oversaturation has become a severe problem for urban intersections, especially the bottleneck intersections that cause queue spillover and network gridlock. Further improvement of oversaturated arterial traffic using traditional mitigation strategies, which aim to improve intersection capacity by merely adjusting signal control parameters, becomes challenging since exiting strategies may (or already) have reached their “theoretical” limits of optimum. Under such circumstance, several novel unconventional intersection designs, including the well-recognized continuous flow intersection (CFI) design, are originated to improve the capacity at bottleneck intersections. However, the requirement of installing extra sub-intersections in a CFI design would increase vehicular stops and, more critically, is unacceptable in tight urban areas with closed spaced intersections. To address these issues, this research proposes a simplified continuous flow intersection (called CFI-Lite) design that is ideal for arterials with short links. It benefits from the CFI concept to enable simultaneous move of left-turn and through traffic at bottleneck intersections, but does not need installation of sub-intersections. Instead, the upstream intersection is utilized to allocate left-turn traffic to the displaced left-turn lane. It is found that the CFI-Lite design performs superiorly to the conventional design and regular CFI design in terms of bottleneck capacity. Pareto capacity improvement for every traffic stream in an arterial system can be achieved under effortless conditions. Case study using data collected at Foothill Blvd in Los Angeles, CA, shows that the new design is beneficial in more than 90% of the 408 studied cycles. The testing also shows that the average improvements of green bandwidths for the synchronized phases are significant.     

Development of a hydraulic limited slip differential system using a pressure generator

The limited slip differential (LSD) is a device that enables the driving force to be transmitted from one slipping wheel to the other by temporarily restraining the differential function when unwanted slipping occurs on muddy or icy roads. Many types of LSD have been developed, such as mechanical lock, disk clutch, viscous coupling, torsen and multiple clutch. This study designed a new type of hydraulic LSD using a pressure generator base on a trochoid gear pump and evaluated the performance of the new design.     

交通出行选择中的博弈分析

本文通过建立基于政府宏观调控措施的信号博弈模型,分析出行者的交通方式选择动机,提出最优出行选择方案及交通管理者的最优信号策略。