共查询到19条相似文献,搜索用时 281 毫秒
1.
《专用汽车》2020,(6)
随着JT/T 1178.2-2019《营运货车安全技术条件第2部分:牵引车辆和挂车》的发布与实施,汽车列车必须进行单车道变换、蛇形、稳态回转以及抗侧翻稳定性等试验。其中单车道变换试验主要测量牵引车与挂车的侧向加速度,对车辆抵抗横向翻车与横向侧滑的能力进行评判,是汽车横向稳定性的重要指标之一。从车辆动力学的角度分析了影响汽车列车横向稳定性的主要因素,并通过TruckSim整车仿真软件,依据JT/T 1178.2-2019和GB/T 25979-2010标准对半挂汽车列车的横向稳定性进行了仿真与评价。最后利用先进的测试设备进行了半挂汽车列车的单变道试验,同时提出了在试验和评价方面的注意事项。 相似文献
2.
操稳性能的优劣直接影响驾驶的感受,更关乎高速行驶时的安全性和稳定性。研究和评价车辆操稳性的直接方法是实车试验,通过总结梳理各类试验与评价标准,查阅汽车操稳试验与评价方法的最新国内标准及ISO标准,分析国内相关标准的现状,以及对比ISO标准存在的优势和缺点,为完善我国汽车试验的标准体系提供参考。 相似文献
3.
4.
介绍金属燃油箱及塑料燃油箱的特性、应用范围及发展趋势;介绍按照GB 18296-2001《汽车燃油箱安全性能要求和试验方法》标准进行的金属燃油箱的振动试验方法及塑料油箱的耐火性试验方法;探讨金属燃油箱振动试验过程中,不同品种的金属燃油箱出现的不同共振现象及对测试结果产生的影响,笔者认为使用采集路谱并在试验室复现的振动试验方法评价金属燃油箱的方法更为接近实际;GB 18296-2001《汽车燃油箱安全性能要求和试验方法》标准中关于塑料燃油箱耐火性试验的内容引自ECE R34-1979版的标准,随着ECE R34-2000更新版的出现,笔者建议我国现行标准也应随之更新以保持与ECE同步. 相似文献
5.
6.
7.
汽车横向稳定性与交通安全分析 总被引:2,自引:0,他引:2
蔡果 《内蒙古公路与运输》2001,(1):41-44
汽车横向稳定性主要受路面附着系数,转向半径和路面横向倾角等因素的限制,文章对此进行了分析,得到了保持汽车横向稳定性的方法,提出了用汽车主动安全技术保持汽车横向稳定性的设想。 相似文献
8.
近年来随着汽车保有量增加,道路交通安全问题已逐渐成为世界性的难题。许多国家通过立法对汽车行驶安全性提出越来越严格的要求,并强制安装一些底盘稳定性电子控制装置。论文基于车辆制动性能和操纵稳定性能对国内外车辆行驶安全性法规确定的试验方法和评价指标研究进展进行了对比综述,对于进一步完善和实现汽车性能测试、提高我国车辆底盘控制系统自主开发能力、健全国内车辆主动安全性法规等具有一定的积极意义。 相似文献
9.
10.
汽车制动性能是汽车安全性的重要评价指标之一,本文主要通过分析我国现有乘用车制动有关标准:GB 7258-2017《机动车运行安全技术条件》、GB 21670-2008《乘用车制动系统技术要求及试验方法》中的相关要求,对乘用车制动性能进行评价。 相似文献
11.
12.
As growing demand of vehicle safety system, especially regarding intelligent transport systems (ITS), automotive manufacturers are focusing more on driving safety and efficient transportation for vehicle users. Many safety systems have been launched in the market recently so, it is important to evaluate the vehicle safety systems and ITS. The ITS based intelligent vehicle test bed was constructed to meet the growing demand of test and verification for such ADAS and ITS systems. First, this paper describes in detail concept of the test-bed. This test-bed is carefully designed to meet the requirements of ISO/TC204 standards. In order to verify the design of the test-bed, virtual test with driving siulator was processed on a virtual test tracks. This test-bed will be used to conduct testing on various ITS and ADAS technologies, such as adaptive cruise control (ACC), lane departure warning system (LDWS), cooperative intersection warning system as well as rollover stability control (RSC) and electronic stability control (ESC), etc. 相似文献
13.
14.
为了提高汽车在突发爆胎事故时的稳定性,对爆胎汽车主动制动控制策略进行了研究。根据车轮爆胎时间与压力变化的关系,在UniTire模型基础上建立了爆胎模型;根据电子稳定性控制系统中横摆角速度及质心侧偏角对汽车稳定性影响的关系,基于二自由度汽车动力学模型,通过计算汽车横摆角速度及质心侧偏角实际值与理想值的偏差,并基于线性二次型调节器最优控制方法决策出最优附加横摆力矩,从而修正爆胎后汽车的运动状态。最后通过计算机仿真对所提策略的有效性进行了验证。结果表明:主动制动控制策略可以保证爆胎过程中汽车的行驶稳定性和安全性。 相似文献
15.
电动汽车的生产和制造需要符合相关的标准,并且还要对整车的性能进行测试,只有这样才能更好的符合汽车上路的条件。本文主要是将国标要求作为基础来对电动汽车的最高车速、滑行能力、加速性能、制动性能和爬坡能力和能量消耗率和续航里程进行测试,通过实施一定的检测试验方法和配套的相关试验设备来做好检测,并且要对测试的结果进行分析,对电动汽车的运行性能进行进一步的优化,从而推进我国电动汽车行业的更好发展和进步。 相似文献
16.
17.
Marcus B rner Rolf Isermann 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2005,43(8):601-612
Driver assistance systems have received increased attention as market demands have pushed for improved automotive safety. These systems are designed to aid the driver by preventing any unstable or unpredictable vehicle behaviour. One global indicator for stability and driving conditions could help to manage the control algorithms and driver warning subroutines. Another problem which could be solved by a precise driving situation indicator is evaluating new vehicles during test drives. After a short introduction to a linear lateral vehicle model, an analytical approach for an online calculation of different driving conditions (i.e., stability, understeering, oversteering, and neutralsteering) is given. A characteristic velocity stability indicator is defined, which allows online computation of the present driving condition. Results are then checked against real measurements of a test vehicle. 相似文献
18.
《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(8):601-612
Driver assistance systems have received increased attention as market demands have pushed for improved automotive safety. These systems are designed to aid the driver by preventing any unstable or unpredictable vehicle behaviour. One global indicator for stability and driving conditions could help to manage the control algorithms and driver warning subroutines. Another problem which could be solved by a precise driving situation indicator is evaluating new vehicles during test drives. After a short introduction to a linear lateral vehicle model, an analytical approach for an online calculation of different driving conditions (i.e., stability, understeering, oversteering, and neutralsteering) is given. A characteristic velocity stability indicator is defined, which allows online computation of the present driving condition. Results are then checked against real measurements of a test vehicle. 相似文献
19.
某商用车转向拉杆在整车下线极限转向测试工况后,出现转向直拉杆弯曲变形现象。本文通过对直拉杆弯曲塑性变形问题的原因解析、方案验证,表明转向直拉杆的临界稳定性是产生问题的根本原因,提出来了一套转向直拉杆压杆稳定性的计算方法和安全系数的选取原则,可以有规避决该类问题发生。 相似文献