基于纵向避撞时间的预警/制动算法  

Warning / Brake Algorithm Based on Time of Longitudinal Collision Avoidance

作　　者：于广鹏[1] 谭德荣[1] 田厚杰[1] 吕长民 

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255049

出　　处：《河南科技大学学报（自然科学版）》2015年第2期30-34,4,共5页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(61074140);山东省自然科学基金项目(ZR2011EEM034)

摘　　要：针对汽车纵向避撞系统的要求,提出了一种基于纵向避撞时间的纵向碰撞预警/避撞(FCW/FCA)算法。通过分析纵向避撞时间与驾驶员反应时间之间的关系,建立了前车不同行驶工况条件下的安全车距模型,并在3种不同行驶工况下,与Berkeley模型进行制动/预警距离的对比。研究结果表明:该算法确定的制动距离与Berkeley模型确定的距离相差很小,并且考虑了前车的运行工况;该算法还能够根据前车行驶工况的不同,确定出合理的预警距离。对比分析结果验证了该算法的有效性和可行性,能够提高车辆行驶的安全性。According to the requirements of longitudinal collision avoidance system,a forward collision warning / avoidance( FCW / FCA) algorithm based on the time of longitudinal collision avoidance was proposed.By analyzing the relationship between the time of longitudinal collision avoidance and the driver 's reaction time,the safety car distance model under the condition of different vehicle driving cycles was established. The comparison with the Berkeley model's braking and warning distance in the condition of three different driving conditions was made. Results show that the braking distance calculated by the algorithm is basically same with the Berkeley model's,and the automobile drive cycle is also considered. The reasonable warning distance is determined according to the different running condition. The results of the analysis and comparison verify the effectiveness and feasibility of the algorithm,which could improve the traffic safety.

关 键 词：汽车工程 汽车主动安全 避撞时间 反应时间 驾驶倾向 安全车距 

分 类 号：U491[交通运输工程—交通运输规划与管理]