摘要
为提高汽车的牵引性能,通过对轴间转矩分配的分析,建立了四轮驱动汽车加速过程的数学模型;提出了发动机节气门控制和轴间转矩分配控制的综合控制策略;采用PI控制方法设计了发动机节气门控制系统和轴间转矩分配电流控制系统;在低附着路面和对接路面上进行了无牵引力控制和有牵引力控制的对比仿真.结果表明:四轮驱动汽车牵引力控制系统可有效抑制驱动轮过度滑转,提高汽车动力性.
In order to improve the traction performance of vehicles, a mathematical model describing the acceleration process of four-wheel drive vehicles is established through the analysis of inter-axle torque distribution, and an integrated control strategy is proposed to control both the engine throttle and the inter-axle torque distribution. Then, an engine throttle control system and a current control system for inter-axle torque distribution are designed based on the PI control. Finally, a simulation is performed to compare the vehicle performances with and without traction control on both low-adhesion and docking roads. The results indicate that the proposed traction control system for four-wheel drive vehicles effectively prevents the driving wheel from excessively spinning and improves the dynamic performance of vehicles.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第1期108-112,118,共6页
Journal of South China University of Technology(Natural Science Edition)
基金
重庆市自然科学基金重点项目(8718)
关键词
四轮驱动汽车
牵引力控制
转矩分配
仿真
four-wheel drive vehicle
traction control
torque distribution
simulation
