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新型主动防撞安全预警距离模型 被引量:5

A New Safety Forewarning Distance Model For Vehicle Collision Avoidance
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摘要 为了使得主动防撞的安全预警距离模型能够反映驾驶员主观感受和个体驾驶特性,基于汽车实际制动过程作了研究分析,对其关键参数时间的影响因素作了深入的分析,并将指数加权的最小二乘法引入安全预警距离模型。经过实验验证分析得出,该安全距离模型对于驾驶员的时间的随机性和动态性具有很好的自适应性,对于优化报警时机具有较好的精确性和稳健性。 In order to gain a new safety forewarning distance that can reflect the driver's subjective sensation and individual driving characteristics, a modified safety forewarning distance model for vehicle collision avoidance is proposed based on vehicle dynamic process of actual braking. After analysis of contributory factor of the time "τ_O" in depth, which is the key parameter of this distance model, the exponentially weighted least squares method was introduced to this new safety forewarning distance. After the experiments on many drivers operation, the results show that this method has great self-adaption for the randomness and dynamic nature of "τ_O" and proves high control accuracy and robustness of the timing of Collision Forewarning System.
出处 《农业装备与车辆工程》 2014年第8期42-47,共6页 Agricultural Equipment & Vehicle Engineering
关键词 防追尾碰撞 最小二乘法 安全预警距离 驾驶员反应时间 collision avoidance system least squares method safety forewarning distance driver reaction time
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