基于整车动力学的电动助力转向系统建模仿真  

Modeling and Simulation of Electric Power Steering System Based on Vehicle Whole Dynamics

作　　者：胡建军[1] 李彤[1] 秦大同[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《系统仿真学报》2008年第6期1577-1581,共5页Journal of System Simulation

基　　金：重庆市自然科学基金重点资助项目(8718);教育部长江学者奖励计划

摘　　要：结合EPS的结构和动力学特性,建立了EPS的动力学方程,采用PID控制方法分别对电机进行助力和回正控制,并结合三自由度的整车模型(考虑侧倾影响)和Fiala轮胎模型建立了EPS整体仿真模型。分析了EPS系统对方向盘瞬态响应品质的影响以及路面冲击下汽车纵横向加速度的变化。Based on the structure and the dynamic characteristics of electric power steering system （EPS）, the dynamic equation of the steering system was established using PID control strategy to assist motor and steering reversal control respectively, and combined with three-axis car load model （considered rolling influence） and Fiala tire model, the EPS integral-simulation model was established. The characteristic of Steering Wheel＇s transient state response quality affected by EPS system and the variation of longitudinal and latitude acceleration due to disturbance of the road condition was analyzed.

关 键 词：电动助力转向 建模 整车 仿真 

分 类 号：U461.6[机械工程—车辆工程]