智能循迹货车与乘用车小角度侧碰速度推算模型研究  

Study on the estimation model of small angle side impact velocity of intelligent tracing truck and passenger car

作　　者：都雪静[1] 梁文智 沈亚敏 DU Xuejing;LIANG Wenzhi;SHEN Yamin(School of Traffic&Transportation,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学交通学院,哈尔滨150040

出　　处：《重庆理工大学学报（自然科学）》2022年第1期20-30,共11页Journal of Chongqing University of Technology：Natural Science

基　　金：国家重点项目基金项目(2017YFC0803901)。

摘　　要：为了研究和推演装载散体的智能循迹货车与乘用车发生侧面小角度碰撞时,货车运行速度的问题,以散落物的分布形状、面积及质量为研究对象,采用1∶20智能循迹小车模型,对侧面10°碰撞下装载4种不同散体的货车与乘用车进行碰撞模拟试验。运用坐标法分析不同散落物的分布形状,发现散体颗粒与地面接触的运动状态及碰撞时智能循迹货车的速度影响散落物分布形状;运用回归分析的方法对试验数据进行分析,并依据最小二乘法建立数学模型,发现碰撞速度与散落物面积之间呈二次函数关系,与散落物质量呈线性关系;使用三维拟合方法对碰撞速度、散落物面积及质量进行分析,构建了通过散落物特征参数推算碰撞时智能循迹货车速度的数学模型。为智能循迹货车发生碰撞事故时的速度推算提供参考。In order to study and derive the problem of the running speed of the truck when the intelligent tracking truck loaded with loose bodies collides with a passenger car at a small angle and a small angle,the distribution shape,area and mass of the scattered objects are used as the research object,and the ratio of 1∶20 is adopted.The intelligent tracking car model performs collision simulation tests on trucks and passenger cars loaded with 4 different types of loose bodies under a 10°side collision.The coordinate method is used to analyze the distribution shape of different scattered objects,and it is found that the movement state of the scattered particles in contact with the ground and the speed of the intelligent tracking truck during collision affect the distribution shape of the scattered objects;the regression analysis method is used to analyze the test data,and the minimum The mathematical model was established by the square method and found that there is a quadratic relationship between the collision speed and the area of the scattered objects,and a linear relationship with the mass of the scattered objects.The three-dimensional fitting method is used to analyze the collision speed,the area of the scattered objects and the mass,and the construction of the passed scattered objects.The mathematical model of the intelligent tracking truck speed during the collision with the characteristic parameters.It provides a reference for the calculation of the speed of the intelligent tracking truck in a collision accident.

关 键 词：智能循迹车辆 货车 车载群体散落物 碰撞试验 速度模型 

分 类 号：U47.14[机械工程—车辆工程]