基于MATLAB的汽车操纵稳定性仿真分析  

Simulation Analysis of Vehicle Handling and Stability Based on MATLAB

作　　者：李翔宇 么鸣涛 李宝玉 徐明清 LI Xiangyu;YAO Mingtao;LI Baoyu;XU Mingqing(School of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《汽车实用技术》2023年第24期95-100,共6页Automobile Applied Technology

基　　金：中央高校基本科研业务费专项项目(buctrc202204)。

摘　　要：为更好地判断汽车的操纵稳定性,在线性二自由度汽车模型的基础上,建立了包含侧倾运动的线性三自由度汽车模型,并整理出其运动微分方程。基于MATLAB软件,通过同时改变三自由度模型与二自由度模型中某些特定参数的大小进行灵敏度分析。结果表明,降低汽车行驶速度,以及增大汽车轮胎侧偏刚度或转动惯量,可以有效提高汽车操纵稳定性,且线性三自由度汽车模型相比于二自由度汽车模型能够更好地反映汽车的操作特性。In order to better evaluate the handling stability of the vehicle,a linear three degree of freedom vehicle model including roll motion is established on the basis of the linear two degree of freedom vehicle model,and its motion differential equations are organized.Based on MATLAB software,sensitivity analysis is conducted by simultaneously changing the size of certain specific parameters in the three degree of freedom model and the two degree of freedom model.The results indicate that reducing the driving speed of the vehicle and increasing the lateral stiffness or rotational inertia of the vehicle tires can effectively improve the handling stability of the vehicle,and the linear three degree of freedom vehicle model can better reflect the operational characteristics of the vehicle compared to the two degree of freedom vehicle model.

关 键 词：MATLAB 汽车三自由度模型 操纵稳定性 角阶跃输入响应 灵敏度分析 

分 类 号：U463.33[机械工程—车辆工程]