共查询到18条相似文献,搜索用时 156 毫秒
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汽车的制动性能关系剑汽车安全行驶性能。ABS防抱死系统的应用是汽车安全性方面最重要的技术进展。通过对装备ABS汽车与普通汽车制动距离的计算比较分析发现,在湿滑的道路上突然制动,ABS系统可以使驾驶员能够保持车辆行驶平稳,在较短的距离内将汽车刹住。但在不湿滑的路面上,缩短刹车距离的范同值比较小。而在冰雪路面上行驶的车辆,没有装备ABS的汽车在湿路面或冻路面上制动时,制动距离会过长且不能猛烈转向。而装备ABS系统的汽车也是如此,因为尽管ABS能提供附加的制动控制和转向控制,但它不能解决这样一个客观的物理事实:那就是在较滑的路面上,可利用的牵引力很小。 相似文献
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为确保汽车行驶中制动的稳定准确性,目前大多数轿车上已经装备了汽车制动防抱制动系统(简称ABS系统)。该系统的加入,使汽车制动时的滑动过程变为滚动状态,进而使得汽车车轮与地面的制动摩擦力大大增加,制动距离减少,制动甩尾现象得以避免,制动滑移和制动跑偏得以校正。 为便于及早发现ABS系统故障,在ABS系统中装有故障警告指示灯,一般装在驾驶指示仪表盘上。在通常 相似文献
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随着汽车技术的不断进步,ABS已逐渐成为汽车的标准配件,尤其是发达国家的乘用车已经普遍装用了ABS系统。ABS系统的全称是电子控制汽车防抱死制动系统,其作用是使汽车在制动时,充分利用车轮的附着力,使车轮处于最佳制动状态,缩短制动距离,同时保证汽车的制动方向稳定性,防止产生 相似文献
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朱华 《中国汽车保修设备》2005,(2):38-40
随着汽车技术的不断进步,ABS已逐渐成为汽车的标准配件,尤其是发达国家的轿车已经普遍装用了ABS系统。ABS系统的全称是电子控制汽车防抱死制动装置,其作用是使汽车在制动时,充分利用车轮的附着力,使车轮处于最佳制动状态,缩短制动距离,同时保证汽车的制动方向稳定性,防止产生侧滑和跑偏。 相似文献
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本文主要阐述了汽车制动防抱死系统的原理、构造、工作过程以及控制方式进行了综述。针对我公司牵引汽车在进行ABS试验中存在的问题,进行总结,论述了ABS能有效缩短制动距离提高汽车制动时方向稳定性的原因,并对ABS集成化应用改进的方向提出了见解。 相似文献
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为测试汽车ABS的性能,搭建了一种ABS混合仿真试验台,并介绍了该试验台的结构及工作原理.与其它道路试验、纯软件仿真试验等方法相比,该试验可在实验室环境下完成对ABS的测试,测试结果包含轮缸压力曲线、轮速曲线、滑移率曲线及制动距离等参数,通过这些曲线参数可对不同厂家的ABS产品进行对比分析,验证不同ABS对整车制动性能的影响,为主机厂提供产品选型的依据. 相似文献
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Improvement of drivability and fuel economy with a hybrid antiskid braking system in hybrid electric vehicles 总被引:1,自引:0,他引:1
J. L. Zhang Ch. L. Yin J. W. Zhang 《International Journal of Automotive Technology》2010,11(2):205-213
When braking on wet roads, Antilock Braking System (ABS) control can be triggered because the available brake torque is not
sufficient. When the ABS system is active, for a hybrid electric vehicle, the regenerative brake is switched off to safeguard
the normal ABS function. When the ABS control is terminated, it would be favorable to reactivate the regenerative brake. However,
recurring cycles from ABS to motor regenerative braking could occur. This condition is felt to be unpleasant by the driver
and has adverse effects on driving stability. In this paper, a novel hybrid antiskid braking system using fuzzy logic is proposed
for a hybrid electric vehicle that has a regenerative braking system operatively connected to an electric traction motor and
a separate hydraulic braking system. This control strategy and the method for coordination between regenerative and hydraulic
braking are developed. The motor regenerative braking controller is designed. Control of regenerative and hydraulic braking
force distribution is investigated. The simulation and experimental results show that vehicle braking performance and fuel
economy can be improved and the proposed control strategy and method are effective and robust. 相似文献
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《JSAE Review》1994,15(3):223-228
The effectiveness of ABS for the motorcycle has been evaluated by comparison with deal braking. However, it is almost impossible for the typical rider to perform ideal braking in an emergency. We conducted braking in a turn test by skilled and less-skilled riders, for the purpose of evaluating the effectiveness of ABS for the typical rider and obtaining data for a method of evaluating motorcycle ABS performance. It was shown that ABS for the motorcycle is effective for both skilled and less-skilled riders in terms of braking distance and vehicle stability. 相似文献
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在Matlab/Simulink中建立一种两轮的汽车动力模型,以自适应模糊PID和道路识别控制器作为控制模块,通过在高低附着路面和高低附着对接路面进行紧急制动仿真的研究。仿真结果表明道路识别控制器能够快速准确的识别路面不同附着路面最优滑移率,自适应模糊PID控制的ABS相于常规制动性能有了很大程度的提高,具有在线自整定参数的特点,具有很好的稳定性、适应性和鲁棒性。 相似文献
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Roderick G. Hebden Christopher Edwards Sarah K. Spurgeon 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2004,41(3):181-202
Summary In this paper a sliding mode integral action controller and sliding mode observer are used to enhance vehicle stability in a split- µ manoeuvre. Anti-lock braking systems (ABS) have become an integral part of modern cars, and they have dramatically improved vehicle handling in braking manoeuvres. However, when a vehicle attempts to brake on a surface with uneven friction coefficient such as on wet or icy roads, a so-called split- µ scenario, the yaw moment generated by the asymmetric braking can prove demanding for an inexperienced driver. The controller presented hereworks in conjunction with a conventional ABS system to provide safe and effective braking through steer-by-wire. This paper extends previous state-feedback work by only using certain measurable quantities in the controller, estimating further signals by employing an observer. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(3):181-202
Summary In this paper a sliding mode integral action controller and sliding mode observer are used to enhance vehicle stability in a split- µ manoeuvre. Anti-lock braking systems (ABS) have become an integral part of modern cars, and they have dramatically improved vehicle handling in braking manoeuvres. However, when a vehicle attempts to brake on a surface with uneven friction coefficient such as on wet or icy roads, a so-called split- µ scenario, the yaw moment generated by the asymmetric braking can prove demanding for an inexperienced driver. The controller presented hereworks in conjunction with a conventional ABS system to provide safe and effective braking through steer-by-wire. This paper extends previous state-feedback work by only using certain measurable quantities in the controller, estimating further signals by employing an observer. 相似文献