基于CarSim的电动汽车转向灵活性仿真与探究  

Simulation and Exploration of Electrical Vehicle Steering Flexibility based on CarSim

作　　者：孟令韩 张修显 孙彩凤 张彦明 施海凤 信兆旺 MENG Linghan;ZHANG Xiuxian;SUN Caifeng;ZHANG Yanming;SHI Haifeng;XIN Zhaowang(Jiangsu Vocational College of Electronics and Information,Huaian,Jiangsu,223001,China)

机构地区：[1]江苏电子信息职业学院,江苏淮安223001

出　　处：《小型内燃机与车辆技术》2024年第3期51-55,共5页Small Internal Combustion Engine and Vehicle Technique

基　　金：HAB202071,基于轮毂电机的电动汽车转向系统研究(淮安市市级科技计划);HABZ202123,基于高强双相钢的电动汽车结构件轻量化技术研究(淮安市市级科技计划);KA220822,电驱动装载机驾驶辅助系统研究团队;HAP202313,淮安市新能源汽车技术公共服务平台。

摘　　要：传统的电动助力转向系统由于是由一套齿轮齿条转向器拉动车轮实现转向的,这就限制了车轮转角使其无法实现真正的阿克曼转向,也限制了车轮的最大转向角度。在CarSim自带模型的基础上,利用Simulink修改其转向子系统,从而建立了一种可实现前轮独立转向的汽车模型。通过双移线仿真试验和方向盘角阶跃响应试验,验证了模型的正确性。通过开环控制和闭环控制试验,证明了模型相对于传统汽车模型有着更好的转向灵活性。研究可为后期的线控转向汽车的灵活性和操稳性研究做出铺垫,对于延长轮胎寿命,提升驾驶感受也具有重要的意义。The conventional electronic power steering system uses a rack and pinion steering to pull the wheel to achieve steering,which limits the wheel angle to achieve Ackermann steering and limits the maximum steering angle of the wheel.In this paper,the steering subsystem of CarSim is modified by Simulink on the basis of Carsim's own model,so as to establish a vehicle model which can realize independent steering of front wheels.The correctness of the model is verified by double shift simulation test and steering wheel angle step response test.Through open-loop control and closed-loop control experiments,it is proved that this model has better steering flexibility than the traditional automobile model.This study can pave the way for the later research on the flexibility and steerability of steering-by-wire vehicles,and is also of great significance to prolong the life of automobile tires and improve driving experience.

关 键 词：独立转向 灵活性 闭环控制 开环控制 仿真 

分 类 号：U469.72[机械工程—车辆工程]