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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(4-5):285-297
Recent experiences have shown that even small-medium size passenger cars face an accident which has been connected with commercial vehicles so far: the roll-over. The roll-over is the most horrible accident type for truck drivers, since he/she does not have any indication before it happens, and consequently does not react properly. This article discusses some of the problems of the commercial vehicle stability in general, and offers a solution for detecting and avoiding roll-over by using the existing sensors and actuators of electronic brake system (EBS). 相似文献
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根据侧翻自卸车箱体举升过程中的举升压力变化,利用液压、气动、电路元件的逻辑控制,对箱体举升角度采用自动控制,避免了箱体举升时发生翻车事故。 相似文献
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对于已经连续近20个月增长的中国重卡市场而言,是该调整的时候了。继4月首次出现8.33的同比负增长之后,2011年5月重卡销量再次同比下跌22.43,从而导致1—5月累计销量首次出现同比下降,销量仅为47万9489辆, 相似文献
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《JSAE Review》1999,20(4):493-497
This paper concerns a technology to estimate the vehicle dynamics transfer function and to correct the control parameter of roll-over compensation system. ARX-model is applied to estimate the transfer function of an actual vehicle. The gravity center height, one of the control parameters of the control model, is corrected so that the transfer function could be in congruence with that of the actual vehicle. The control model forecasts the critical roll-over condition and the control system compensates the critical condition by controlling the braking force distribution. 相似文献
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在基础车型实测数据基础上,通过应用计算分析方法,实现变型客车的侧倾稳定性法规认证预测,为变型客车的认证研发提供新的思路和参考。 相似文献
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对客车倾翻试验出口认证法规进行介绍;结合丰富的出口认证检测经验,为客车厂家进行倾翻试验提供参考;提出客车倾翻试验仿真分析的必要性。 相似文献
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H.K. Sachs 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1972,1(3):161-177
The influence of vehicle handling on the possible avoidance of accident situations is discussed. lit is shown that accident reconstruction at present does not provide the necessary information to relate the cause of accidents to the lack of road worthiness of vehicles. It follows that the vehicle behavior in proximity of its performance limit must be determined in order to infer its accident avoidance potential.
The paper presents a review of the state-of-the-art of vehicle modeling, simulation of vehicle maneuvers and full scale testing. The application of the direct method of the stability theory is suggested as a possible means of obtaining performance limit envelopes which are necessary for establishing standards of the performance of vehicles. 相似文献
The paper presents a review of the state-of-the-art of vehicle modeling, simulation of vehicle maneuvers and full scale testing. The application of the direct method of the stability theory is suggested as a possible means of obtaining performance limit envelopes which are necessary for establishing standards of the performance of vehicles. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(3-4):161-177
SUMMARY The influence of vehicle handling on the possible avoidance of accident situations is discussed. lit is shown that accident reconstruction at present does not provide the necessary information to relate the cause of accidents to the lack of road worthiness of vehicles. It follows that the vehicle behavior in proximity of its performance limit must be determined in order to infer its accident avoidance potential. The paper presents a review of the state-of-the-art of vehicle modeling, simulation of vehicle maneuvers and full scale testing. The application of the direct method of the stability theory is suggested as a possible means of obtaining performance limit envelopes which are necessary for establishing standards of the performance of vehicles. 相似文献
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对道路交通事故信息进行实时采集和分析,研究交通事故的人—车—环境的特性、交通事故的发生规律与影响因素,对预防和减少事故伤害具有十分重要的现实意义。文章主要介绍的是同济大学在上海嘉定区建立的道路交通事故信息采集系统尝试,及事故再现分析的主要工作流程。 相似文献
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This study investigated the wheel-lift and roll-over derailment mechanisms caused by train collisions using a precise virtual testing model (VTM) of a Korean high-speed train. The VTM was a complex, nonlinear finite element model composed of the shell, beam, solid, spring, and surface contact elements for the car body, bogies, suspensions, and wheel–rail interfaces. The VTM was validated by checking the errors in the total energy and the dynamic responses of the spring elements. To achieve a quick, dynamic relaxation of the dead weight of the VTM before the collision analysis, the artificial damping method and the artificial force method were introduced and numerically evaluated. The surface-to-surface contact model from commercial software, Ls-Dyna, was applied to the VTM in order to simulate the derailment mechanisms caused by collision accidents. The numerical analyses of the VTM colliding with a large deformable obstacle or a rigid wall revealed for the first time that a mixed slip/roll-over-type derailment mechanism generally occurs. Furthermore, the simulation results were consistent with the results from a simplified theoretical derailment model of a wheel set. 相似文献
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以哈尔滨市干道路网为研究对象,收集到了该路网上468个路段和163个平面交叉口的道路交通数据,以及1999年至2004年所发生的8510起交通事故数据.分析了事故数据的统计分布特性,应用聚类分析技术确定了路段和交叉口的类别 ,并在此基础上分别建立了事故总体和分事故形态的预测模型.论文探讨了高峰时段的事故次数、事故率与路段v/c之间的定量关系.标定出了24个模型,并形成干道系统事故预测模型库.最后,运用所建立的事故预测模型选取了2010年哈尔滨规划路网的一部分进行实例分析,结果表明了预测模型是有效的. 相似文献
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一向以安全而著称的沃尔沃卡车正在将商用车的安全性提升到一个新的高度。目前,在主动安全方面,沃尔沃卡车成绩斐然:自适应巡航、车道保持、正向碰撞预警、驾驶员提醒等,这些系统在实际使用中可以直接或间接地降低卡车事故发生的概率。2012年6月26日,欧洲场地测试研究(euroFOT)项目的首批结果在布 相似文献
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对我国高速公路安全管理系统的探讨 总被引:2,自引:0,他引:2
在高速公路交通事故及其严重程度的致因中安全管理系统的健全不容忽视。通过对我国某条高速公路交通安全管理系统和交通事故的致因分析,从管理体制和交通安全角度剖析了高速公路安全管理中存在的问题,提出了:实行"统一管理,综合执法",或在现有的管理模式下,高速公路的交通警察和监控人员在监控中心合署办公,共同处理高速公路上的交通安全问题;限制超速行驶、加强对货车、危险品运输及高速公路结构和安全设施的管理,优化服务意识、建立信息协调机制、充分利用交通广播等其他安全管理措施和方法以完善高速公路交通安全管理,建立一套符合我国国情的高速公路安全管理措施和方法,以期达到为公路用户提供安全、舒适和快速的运行环境的目的。 相似文献
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为了提高营运车辆驾驶人安全管理的精细化水平,合理地评估驾驶人驾驶风险程度,有的放矢地降低高风险驾驶人的事故率,基于卫星定位数据特点及驾驶行为与驾驶风险的相关关系设计26个驾驶行为特征参数。考虑到高速和非高速行驶时相同驾驶行为对驾驶风险的影响区别较大,根据23名营运车辆驾驶人的实测数据有针对性地筛选高速和非高速路段驾驶人风险评估指标,构建营运车辆驾驶人驾驶风险评估指标体系。然后,基于熵权法、独立性权系数法和Spearman相关系数法建立集成赋权法,确定各评估指标的权重。最后,雇佣40名营运车辆驾驶人进行实车试验以验证模型的合理性。结果表明:车辆速度和加速度方面的驾驶行为特征可以用于评估驾驶人的驾驶风险且评估效果较好,驾驶风险评估得分与实际交通冲突次数呈正相关关系,所建立模型可以较为准确地评估营运车辆驾驶人驾驶风险的高低,准确率达到77.50%,该模型在不同地区使用时,准确率存在一定的差异,但在容许范围之内,方法具有较好的鲁棒性。 相似文献
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在“有定单不等于有市场,有市场不等于有试验场”的警示之下,以南京依维柯为代表的中国轻卡行业正在试图改变世人对中国轻卡以往的刻板形象。很显然,亟待重塑国际形象的中国轻卡企业,已初步具备了承接世界商用车产业梯度转移的能力。 相似文献