| 队列车辆碰撞严重性及车队排布策略 |
| |
| 引用本文： | 陈文韬,孙志伟,周青,林昌威.队列车辆碰撞严重性及车队排布策略[J].中国公路学报,2022,35(4):298-312. |
| |
| 作者姓名： | 陈文韬 孙志伟 周青 林昌威 |
| |
| 作者单位： | 清华大学 汽车安全与节能国家重点实验室, 北京 100084 |
| |
| 基金项目： | 国家自然科学基金项目(51675295);国家重点研发计划项目(2017YFE0118400) |
| |
| 摘 要： | 针对自动驾驶车辆队列发生不可避免碰撞的事故场景,研究以整体碰撞严重性达到最低为目标的车队排布策略.首先根据引发事故的障碍物是否会明显影响领航车运动,将碰撞划分为队内碰撞和队外碰撞.队列几何构型一定时,针对均质化队列发生一维碰撞过程建立理论模型,计入碰撞前车辆对前车紧急制动的感应及自车进行紧急制动的过程,计算并定义时间截...
|
| 关 键 词： | 汽车工程 汽车碰撞安全 碰撞严重性 车辆队列 避障策略 |
| 收稿时间： | 2020-07-02 |
Vehicle Collision Severity and Configuration Strategy of Platoons |
| |
| CHEN Wen-tao,SUN Zhi-wei,ZHOU Qing,LIN Chang-wei.Vehicle Collision Severity and Configuration Strategy of Platoons[J].China Journal of Highway and Transport,2022,35(4):298-312. |
| |
| Authors: | CHEN Wen-tao SUN Zhi-wei ZHOU Qing LIN Chang-wei |
| |
| Affiliation: | State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China |
| |
| Abstract: | In this study, platoon configuration strategies were developed to minimize the overall collision severity in unavoidable collision accidents of self-driving vehicle platoons. First, according to whether the obstacle-leader collision significantly affects the leader's motion, the collision was divided into intra-platoon and extra-platoon collisions. Based on a specific platoon geometric configuration, a theoretical model for the one-dimensional collision of a homogenous vehicle platoon was established. The model reflected the vehicle perception and emergency braking process before the collision, and the time truncation was defined, according to which the platoon speeds were divided into low, medium, and high speeds. The effects of the vehicle length, vehicle mass, and platoon size on homogenous platoon collision severity at different speeds were analyzed. Further analysis assumed that under different speeds, only one heterogeneous vehicle, i.e., a heavy or an emergency steering vehicle, was in the platoon, and the influence of the positions of the heterogeneous vehicles on the collision severity was determined. Finally, the results were verified through PC-Crash simulations. During intra-platoon collision, the vehicle mass and length do not influence vehicle collision severity. Within a specific speed range, the higher the platoon speed, the more significant the overall collision severity. However, when the speed exceeds a particular value, the severity reaches saturation, that is, the collision severity no longer worsens with speed. At low speeds, the overall collision severity is minimal when the heavy vehicle is in the middle front of the platoon and when the middle vehicle is steering out. At high speeds, the collision damage is minimized when the heavy vehicle is in the middle of the platoon, and the leader or the last vehicle steering can also minimize the overall collision severity. In extra-platoon collision, the speed, mass, and length of the obstacle vehicle influence the collision severity. The higher the platoon speed, the greater the collision severity. At low speeds, using the heavy vehicle as the leader can minimize the overall collision severity, and selecting the vehicle in the middle front for steering can also reduce platoon collision severity. At high speeds, the best position for the heavy vehicle moves backward compared to those at low speeds. The leader or the last vehicle steering can reduce the overall collision severity. This study will help analyze the vehicle configuration strategy of self-driving vehicle platoons in the future. |
| |
| Keywords: | automotive engineering vehicle collision safety collision severity vehicle platoon obstacle avoidance strategy |
|
| 点击此处可从《中国公路学报》浏览原始摘要信息 |
|
点击此处可从《中国公路学报》下载全文 |
|
