正面碰撞事故中车速推算的改进算法研究  

A Study on the Improved Algorithm for Estimating the Vehicle Speed in Frontal Impact Accident

作　　者：姜华平[1] 何宏宇[1] 吴伟阳[1] 

机构地区：[1]山东交通学院交通与物流工程系,济南250023

出　　处：《汽车工程》2009年第6期531-532,544,共3页Automotive Engineering

基　　金：山东省教育厅科技项目计划(J06P11)资助

摘　　要：鉴于目前在正面碰撞事故的车速推算中常用的经典算法,其计算结果常与实际情况存在差异,文中在分析刚体碰撞过程中两车的运动状态的基础上,建立了车辆运动微分方程,以推算肇事车碰撞前的行驶速度。实例验证表明:改进算法的计算结果比常用算法的结果更接近PC-CRASH的模拟结果。In view of that the calculation results by classical algorithm commonly used at present for calculating the vehicle speed in frontal impact accidents are often quite different from the actual situation, and on the base of the analysis on the movement state of two vehicles in the course of rigid body collision, a set of differential equations for vehicle movement are established in this paper for reckoning the speed of hitting vehicle before crash. It is exemplified that the calculated result of improved method is closer to ＇that of PC-Crash simulation compared to the commonly used algorithm.

关 键 词：正面碰撞 微分方程 碰撞前速度 改进算法 

分 类 号：U467.14[机械工程—车辆工程]