摘要
为某商用车转向系统设计了电动助力转向系统(EPS)的总体布置和曲线型助力特性,并基于模糊PID控制方法设计了助力控制策略。以车辆动力学仿真软件TruckSim和Matlab/Simulink为平台,在整车动力学模型和EPS控制模型的基础上,建立了装备EPS商用车的联合仿真模型,以研究助力控制策略对EPS性能和整车操纵稳定性的影响。结果表明:与PID控制方法相比,采用模糊PID控制器的助力控制策略更能充分实现EPS的功能和改善商用车的操纵稳定性。
The arrangement and power-assistance characteristics of electric power steering （EPS） system as well as power-assistance control strategy based on fuzzy PID control scheme are designed for the steering system of a commercial vehicle. With the vehicle dynamics simulation software TruckSim and Matlab / Simulink as platforms, a joint-simulation model for the commercial vehicle with EPS are established based on vehicle dynamics model and EPS control model built, and a joint-simulation is conducted to study the effects of power-assistance control strategy on EPS performance and vehicle handling stability. The results of simulation show that compared with ordinary PID control, the power-assistance control strategy using fuzzy PID controller can more fully realize EPS function and im- prove the handling stability of commercial vehicles.
出处
《汽车工程》
EI
CSCD
北大核心
2013年第9期812-816,共5页
Automotive Engineering
基金
中央高校基本科研业务费专项资金(CHD2011TD006
CHD2011ZY016)资助
关键词
电动助力转向系统
助力特性
模糊PID控制
electric power steering system
power-assistance characteristics
fuzzy P1D control
