摘要
为提高车辆在高速大转角工况下的横向稳定性,以装备管柱式EPS的某微型乘用车为研究对象,建立其非线性3自由度整车模型,对车辆转向特性和转向行驶稳定性进行理论分析;在没有电子稳定程序或车辆动态稳定性控制装置的情况下,引入可控的补偿电流对EPS控制策略进行改进,并在matlab/simulink中进行仿真分析。结果表明,所研究的EPS电流补偿控制策略有效提高了高速大转角时车辆转向系统阻尼,增强了车辆的横向稳定性和驾驶员"路感",使车辆的横摆运动得到良好控制。
In order to improve the vehicle＇s lateral stability in high-speed and large steering angle operation, the researchers established a 3-DOF model of the whole vehicle using a mini passenger car equipped with column-type EPS as research object, and analyzed vehicle steering characteristic and steering stability theoretically. A controllable compensation current has been introduced to improve the control strategy for EPS with the absence of electronic stability program （ESP） or vehicle dynamic control （VDC） system. The simulation was made in Matlab/Simulink. The results show that the EPS current compensation control strategy has effectively increased the steering system damping in high-speed and large steering angle operation, it has also enhanced the lateral stability and the road feel. The vehicle＇s yaw motion is well controlled.
出处
《汽车技术》
北大核心
2013年第11期24-28,共5页
Automobile Technology
基金
"863"国家高技术研究发展计划课题(编号2011AA11A222)
江苏省科技成果转化资金项目(编号BA2010137)
关键词
高速大转角工况
EPS
电流补偿
控制策略
High-speed and large steering angle condition, EPS, Current compensation,Control strategy
