摘要
利用Adams/Car建立了某A级乘用车的多体动力学模型;分析了电动助力转向系统(EPS)的工作原理,在Matlab/Simulink中设计了考虑助力控制及回正控制的综合控制算法,定义了与车辆模型的数据交换接口,并进行联合仿真。在方向盘正弦输入试验中,在常见的40km/h车速下转向时,方向盘最大操纵力矩降低了42.3%,驾驶员获得了更优的路感;在汽车转向撒手试验中,防止了方向盘回正过头,稳定时间缩短了50%,消除了残余横摆角速度。
A multi-body dynamic passenger car model was developed with Adams/Car. The operating principle of the electric power steering （EPS） system was analyzed. A new combination control strate- gy for power steering and overshooting control was designed with Matlab/Simulink, and its data I/O interface with the car model was defined. The ear model and the control system were co-simulated. In a steering sine input simulation under the steering of common vehicle speed of 40 km/h, the maximum steering wheel torque of the ear was decreased 42.3 % , and the ear driver gained more comfortable driving experience. In the simulation of a vehicle steering without driver＇ s hands, the overshooting of the steering wheel was effectively prevented, its stability time was reduced 50%, and the remaining sway angular speed was eliminated.
出处
《重庆理工大学学报（自然科学）》
CAS
2010年第10期7-12,共6页
Journal of Chongqing University of Technology：Natural Science
基金
重庆市重大科技攻关计划子项目(CSTC
2009AB6018)
关键词
汽车
电动助力转向
控制策略
联合仿真
automobile
electric power steering
control strategy
co-simulation
