2014年乘用车市场将继续保持平稳快速发展

乘用车市场的发展态势是各大汽车制造企业关注的焦点，对企业制定发展战略和及时调整产业结构至关重要。在分析2013年乘用车市场逐步走高态势形成原因的基础上，对比美、欧、日等国家的汽车销量和保有水平，对2014年我国乘用车市场需求及发展走势进行了预测。受发展规律、宏观经济及汽车政策的影响，2014年我国乘用车需求预计为1860万辆，同比增长14％。2014年乘用车市场将继续保持平稳快速发展。     

限界检测车在南京地铁10号线贯通测量中的运用

对限界检测车原理、工作方式等进行了介绍,并结合南京地铁10号线的工期、线路长度、冷热滑时间安排等因素,首次把限界检测车引入到了南京地铁限界检测中,实现了对整个南京地铁10号线全线区间及城西路停车场的快速、准确检测,使南京地铁10号线在通车之后未发生一起电客车擦碰事件,保证了运营安全。     

汽车蓄电池漏电故障诊断分析

分析汽车蓄电池漏电的原因,绘制蓄电池漏电故障树状图,提出诊断分析流程和预防漏电建议。     

网络化SCADA系统调度端设计及可靠性分析

提出了一种高性能网络化ＳＣＡＤＡ系统调度端的设计方案，给出了其硬件结构图及网络软件设计框图，并建模分析了系统可靠性，该设计方案已成功地应用了于京郑线及湘黔线ＳＣＡＤＡ系统。     

30t轴重浴盆式敞车车体非线性分析

利用ANSYS软件建立了30 t轴重浴盆式敞车车体的有限元模型,并基于材料非线性和几何非线性特性对车体进行了分析,得到了车体结构的Von Mises应力云图和结构响应曲线。分析结果表明,车体结构的应力-应变响应曲线满足材料的本构关系,在规定的纵向压缩载荷下不会发生屈曲失稳现象,满足AAR M—1001《货车设计制造规范》的要求。     

Fuzzy and adaptive fuzzy control for the automobiles’ active suspension system

Two typical criteria for good vehicle suspension performance are their ability to provide good road handling and increased passenger comfort. The main disturbance affecting these two criteria is terrain irregularities. Active suspension control systems reduce these undesirable effects by isolating car body motion from vibrations at the wheels. This paper describes fuzzy and adaptive fuzzy control (AFC) schemes for the automobile active suspension system (ASS). The design objective is to provide smooth vertical motion so as to achieve the road holding and riding comfort over a wide range of road profiles. The efficacy of the proposed control schemes is demonstrated via simulations. With respect to the optimal linear quadratic regulator (LQR), it is shown that superior results have been achieved by the AFC.     

Non-stationary random vibration analysis of three-dimensional train–bridge systems

The quarter car model has been used extensively to study the benefits of active, semi-active and passive suspensions. Despite the evident simplicity of the model, the insights obtained from this model have been found to have counterparts in half- and full-car suspension models. Among the most interesting results of the analysis of the quarter car are the relationships among certain transfer function and invariant points in the frequency response functions. These results are of great interest for the application of linear control techniques to the design of active suspensions and the optimisation of linearised passive suspensions. This paper attempts to show why some of the limitations implied by the model are less absolute than they at first seem.     

转K1型转向架组装工艺

介绍了转K1型转向架的结构特点和关键技术参数,着重分析了侧架导框的加工、侧架与支撑座板的组焊和转向架的组装工艺等。     

浅谈C_(61Y)型敞车存在的安全隐患及防范措施

针对C61Y型敞车在检修及运用状况下的实际状态，分析了在车辆运用中存在诸多危及行车安全的因素，并提出了防范措施。     

青藏高原铁路客车电气系统设计

文章从安全性和可靠性的角度出发,指出了青藏高原铁路客车电气系统需要解决的难题,介绍了电气系统及设备所采取的针对性措施以及系统控制与防护措施。