车辆转动惯量估算误差对碰撞前车速估算值的影响  

Influence of the Estimation Error of Vehicle Moment of Inertia on the Estimate of Pre-crash Speed

作　　者：张健[1,2] 张鑫[3] 梁超[1] 李江[2] 倪行达[2] 刘瑞军[1] 

机构地区：[1]北华大学汽车与建筑工程学院,吉林132013 [2]吉林大学交通学院,长春130022 [3]东南大学交通学院,南京210096

出　　处：《汽车工程》2015年第2期175-178,154,共5页Automotive Engineering

基　　金：国家自然科学基金(51178001);吉林省教育厅科学技术研究项目(2011141);吉林市科技发展计划项目(20090404)资助

摘　　要：为准确分析车辆转动惯量估算误差对估算的汽车碰撞车速的影响,应用摄动理论建立了相应的分析方法和评价指标。应用分析方法对一起典型汽车碰撞实例的研究表明:对于质量相差较大的两车碰撞事故,高估重车转动惯量,而低估轻车转动惯量时,估算的轻车碰撞前车速的误差最大。For accurately analyzing the influence of the estimation error of vehicle moment of inertia on the estimate of pre-crash speed, an analysis method and evaluation indicators are established by applying perturbation theory. The results of applying the analysis method to a typical vehicle collision case show that for a crash accident of two vehicles with great difference in mass, an overestimation of heavier vehicle moment of inertia with an underes- timation of lighter vehicle moment of inertia may lead to the most significant error of pre-crash speed estimate for lighter vehicle.

关 键 词：车辆 转动惯量 碰撞前车速 

分 类 号：U491.31[交通运输工程—交通运输规划与管理]