不同的优势 不同的亮点 共同的商机 共同的期待

正由浙江省自行车电动车行业协会、浙江省自行车电动车商会主办,浙江华达展览有限公司和上海协升展览有限公司共同承办的"第35届中国浙江国际自行车电动车展览会"(以下简称"浙江展")定于2014年11月21日—23日在宁波国际会展中心隆重举行。     

金属的咆哮 机械的诗歌

2009年底,三大艺术机构向公众展出了粗加工金属制成的艺术品,原型皆来自汽车。这是一场远距离的,围绕材料以及汽车地位的对话。第一件,也许是最具冲击力的一件作品,来自于Jeremy Deller的装置艺术作品,该作品获得了2004年泰纳奖(Turner Prize)。作为一个天生具备挑衅精神的英国艺术家,Deller于10月11月在芝加哥MCA展示了他的作品《它就是它,关于伊拉克的谈话(It iswhat it is:Conversation about Iraq)》。     

平凡的司机大写的人

做为驾车人,我被两位同行的义举所感动.一位叫王杰,江西九江的一名客运司机.……     

现在的买主是理性的

2008年的全球金融危机对宾科在中国的销售有影响吗？ 安德鲁 2008年我们在销量上都有增长,特别是上半年,大中华区500辆的销售目标不会受到影响,但第四季度的销量放缓,我们对明年比较谨慎一点,上半年会困难些,但下半年会有增长。不过金融危机对中国的影响并没那么大,对心理的影响大过对金钱收益的影响,实际上消费的能力在那里,只是心理上不想消费。40000亿的政府投入,对经济的影响在上半年就能体现。     

沦陷的车城 衰败的车展

一年一度的北美车展就要开幕了,底特律新闻上的一则消息引起了笔者的兴趣。消息称,由于日产、法拉利、三菱等品牌已宣布不参加本次车展,底特律的Cobo中心有很大一部分展场面积未能租出,无奈之下,主办方决定在地下一层开辟出一个面积达7万m^2的赛道,旁边还布置了树木与小瀑布,以供参观者试乘试驾通用、福特的环保车型。     

适合的才是最好的

我们中国人的新年终于来了!展望新的一年,行走,还将是我生活的重要部分。为此,我给自己准备了两个新年礼物,一台尼桑电喷Y60四驱越野车,另一个则是KTM640ADV。后者也将是我今后一段时间里主要的自驾伙伴。     

绿色的，环保的

和三一充满活力的红不同,位于E2室内展馆的维特根用明亮的绿彰显它的环保主旨。随着人们的环保意识提高,在选择某种技术、材料或者某款设备时,环境友好型往往更受青睐,而同时契合循环经济、环境的可持续发展观念www.roadm-china.com     

紊乱的比赛混淆的结局

对巴里切罗来说，突如其来的退出令他如此的痛苦。欲打破8年来没有能够拿到家乡站积分宿命的他再次以失利而告终。而费斯切拉阴差阳错将面对现实，因为他的职业生涯的第一个分站冠军如此的不可琢磨。     

专业性的车展 专业性的服务

随着上海车展开展日期的临近，不少参展商开始关心展会期间的相关服务情况，如宾馆、租赁、布展、用车、饮食等，本刊记者近日就此咨询了展会组委会负责人。     

疯狂的电摩 盲目的市场

属地级市的贵港市．东接玉林、西连广西首府南宁，人口约400万。同广西其他城市样．贵港市的基础工业还相当的薄弱．仅依靠简单的商业、粗放式的物流和农产品深加工等产业的收入支撑着整个城市经济的运行。因此．财力有限的贵港市，城市的软硬件设施建设属于刚起步阶段。     

Neuro-Fuzzy Control of a Tracked Vehicle Featuring Semi-Active Electro-Rheological Suspension Units

This paper presents vibration control of a tracked vehicle installed with electro-rheological suspension units (ERSU). As a first step, an in-arm type ERSU is designed, and its spring and damping characteristics are evaluated with respect to the intensity of electric fields. Subsequently, a 16 degree-of-freedom model for a tracked vehicle equipped with the proposed ERSU is established followed by the formulation of a neuro-fuzzy controller. This controller takes account for both ride quality and steering stability by adopting a weighting parameter between two performance requirements. The parameter is appropriately determined by employing a fuzzy algorithm associated with two fuzzy variables: the vertical speed of the body and the rotational angular speed of the wheel. Control performances to isolate unwanted vibration from bump and random road excitations are evaluated through computer simulations. In addition, maximum speed of the vehicle with 6 Watt power absorption is investigated with respect to the road roughness.     

Neuro-Fuzzy Control of a Tracked Vehicle Featuring Semi-Active Electro-Rheological Suspension Units

This paper presents vibration control of a tracked vehicle installed with electro-rheological suspension units (ERSU). As a first step, an in-arm type ERSU is designed, and its spring and damping characteristics are evaluated with respect to the intensity of electric fields. Subsequently, a 16 degree-of-freedom model for a tracked vehicle equipped with the proposed ERSU is established followed by the formulation of a neuro-fuzzy controller. This controller takes account for both ride quality and steering stability by adopting a weighting parameter between two performance requirements. The parameter is appropriately determined by employing a fuzzy algorithm associated with two fuzzy variables: the vertical speed of the body and the rotational angular speed of the wheel. Control performances to isolate unwanted vibration from bump and random road excitations are evaluated through computer simulations. In addition, maximum speed of the vehicle with 6 Watt power absorption is investigated with respect to the road roughness.     

Ride quality evaluation of a vehicle with a planar suspension system

The longitudinal connection between a chassis and a wheel in a conventional vehicle suspension system is commonly very stiff than the vertical connection. Such a mechanism can efficiently isolate vibrations and absorb shocks in the vertical direction but cannot sufficiently attenuate the impact in the longitudinal direction. In order to overcome such a limitation, a planar suspension system (PSS) with spring–damper struts in both the longitudinal and vertical directions is proposed so that the vibration along any direction in the wheel rotation plane can be isolated. In this paper, the dynamic responses of a vehicle with PSS due to a single bump and random road unevenness are investigated. The ride quality of the vehicle with PSS is evaluated in accordance with ISO 2631. A comparison with that of a similar conventional vehicle is conducted to demonstrate the promising potentials of the PSS in improving the vehicle ride quality.     

Vehicle Models for RTS Applications

A vehicle system dynamics model is presented that captures the essential braking and handling behavior of a passenger car and runs faster than real-time on a 1998 Pentium 233 MHz laptop computer. The simulation code was generated with the AutoSim multibody code generator and linked with C functions that communicate with braking hardware to create a real-time simulation (RTS) with hardware in the loop (HITL). Techniques are described that were used to allow the simulation program to work with HITL. The model (without controller) was also integrated with the Simulink environment to provide a design tool for control engineers.     

基于力学与造价的CFRP-钢组合拉索斜拉桥设计理论

针对1400～2800m主跨斜拉桥整体刚度不足的问题,提出一种新型结构方案——碳纤维增强塑料（CFRP）-钢组合拉索斜拉桥。该方案将CFRP斜拉索与传统钢斜拉索同时应用于斜拉桥中,组合2种材料高强轻质及弹性模量高的优点,以：达．到提高斜拉桥整体刚度的设计目的。通过基于力学与造价的参数分析提出该组合拉索斜拉桥的3种设计原则：等安全系数等效刚度最优、等安全系数等效刚度性价比最优、等造价等效刚度最优,并分别给出详细的设计步骤及设计用图。最后,进行了多种方案1400m主跨斜拉桥试设计。结果表明：CFRP-钢组合拉索斜拉桥在力学与经济性方面均具有一定优势,其工程应用具有可行性,是主跨为1400～2800m斜拉桥的优选方案之一。     

Vehicle Models for RTS Applications

A vehicle system dynamics model is presented that captures the essential braking and handling behavior of a passenger car and runs faster than real-time on a 1998 Pentium 233 MHz laptop computer. The simulation code was generated with the AutoSim multibody code generator and linked with C functions that communicate with braking hardware to create a real-time simulation (RTS) with hardware in the loop (HITL). Techniques are described that were used to allow the simulation program to work with HITL. The model (without controller) was also integrated with the Simulink environment to provide a design tool for control engineers.     

燃料电池城市客车结构有限元分析与轻量化设计

建立了带空气弹簧悬架模型的燃料电池城市客车骨架结构有限元模型,并计算其静强度、扭转刚度以及自由振动模态,结果表明燃料电池城市客车设计是安全可靠的。然后对燃料电池城市客车进行计及制造约束的优化。与原设计相比,优化后质量降低8.17%,一阶扭转频率提高7.89%,右前轮悬空工况时的最大应力降低24.42%。     

Safety of a railway wheelset – derailment simulation with increasing lateral force

The motivation for this research is to make a comparison between dynamic results of a free railway wheelset derailment and safety limits. For this purpose, a numerical simulation of a wheelset derailment submitted to increasing lateral force is used to compare with the safety limit, using different criteria. A simplified wheelset model is used to simulate derailments with different adhesion conditions. The contact force components, including the longitudinal and spin effects, are identified in a steady-state condition on the verge of a derailment. The contact force ratios are used in a three-dimensional (3D) analytical formula to calculate the safety limits. Simulation results obtained with two contact methods were compared with the published results and the safety limit was identified with the two criteria. Results confirm Nadal’s conservative aspect and show that safety 3D analytical formula presents slightly higher safety limits for lower friction coefficients and smaller limits for high friction, in comparison with the simulation results with Fastsim.     

CO2轿车空调降温性能试验研究

介绍了国内第一台配置CO2空调系统的桑塔纳轿车在环境模拟实验室和道路行驶时空调效果的测试结果,该制冷系统采用铜管铝片式换热器,其尺寸与原HFC134 a系统基本一致,压缩机采用斜盘活塞式,节流机构采用手动控制开度的电子膨胀阀。试验表明此空调器基本能满足降温的需要,但零部件的性能需要改善。     

Comparative stability of bogie vehicles with passive and active guidance as influenced by friction and traction

The stability of four bogie configurations is considered for a range of friction coefficients and traction ratios. The basis of comparison is the vehicle with conventional solid-axle railway wheelsets mounted in bogies with relatively stiff plan-view suspension. As improved performance of the wheelset in guidance can be achieved with various forms of passive and active guidance, bogies with yaw relaxation, with conventional wheelsets and active stabilisation and with independent wheels and active guidance are considered. Stability of each of these configurations is studied using a full nonlinear solution of the equations of motion. It is shown that the stability of the passive bogie configurations is very robust in the presence of traction and braking and variations of friction and that this is also true for an actively guided bogie with independent wheels. However, for a bogie with conventional wheelsets and active stabilisation, creep saturation effects can reduce stability significantly.