摘要
根据电动轮汽车前轮独立驱动的特点,提出了一种针对电动轮汽车的新型助力转向方式——差动助力转向。首先讨论其基本原理及结构并应用Matlab/Simulink建立了整车和转向系模型,接着给出了旨在减小参考转向手力与实际转向手力差值的左右转向轮的驱动转矩分配的控制策略,以及转向轮辅助回正控制算法。最后进行离线数字仿真,结果表明对于前轮独立驱动的电动车,所提出的差动助力转向系统既满足了转向轻便和驾驶路感良好的基本要求,又改善了转向轮回正性。
A novel power-assisted steering scheme differential drive assisted steering （DDAS） ：is proposed for electric vehicle with in-wheel motor drive based on the features of its front wheels independent drive. Firstly, its basic theory and structure are discussed and a model for complete vehicle and steering system is built using Matlab/Simulink. Then the control strategy for driving torque distribution between right and left steered wheels is presented, aiming for reducing the difference between the actual and the reference manual steering efforts, and the control algorithm for assisting aligning of steered wheels is also given. Finally an off-line numerical simulation is conducted. The results showed that not only can the proposed DDAS system meet the basic requirements of steering handiness and good road-feel but also can improve the returnability of steered wheels.
出处
《汽车工程》
EI
CSCD
北大核心
2009年第6期545-551,共7页
Automotive Engineering
基金
国家"863"高技术发展计划项目(2006AA11A129)
吉林大学研究生"985"工程创新计划项目(20080213)资助
关键词
电动轮汽车
差动助力转向
仿真验证
EV with in-wheel motor drive
differential drive assisted steering
simulation validation
