摘要
为了提高线控转向(steer-by-wire,SBW)系统转向时的稳定性,本文采用基于模型预测控制(MPC)的控制策略,实现SBW系统的主动转向控制.根据车辆固定转向增益,设计理想角传动比曲线,并通过控制横摆角速度和质心侧偏角,确定车辆行驶的稳定性,实现车辆的主动转向功能.基于Simulink与Carsim平台,建立整车模型,并对转向执行总成部分进行频率响应特性分析,验证其工作稳定性.仿真结果表明:所设计的控制策略可显著提高车辆操纵稳定性.
To enhance the stability of the steer-by-wire(SBW)system during steering,this paper adopts a control strategy based on model predictive control(MPC)to achieve active steering control of the SBW system.Based on the fixed steering gain of the vehicle,an ideal angular transmission ratio curve is designed,and the stability of the vehicles driving is determined by controlling the yaw rate and center of mass lateral angle,thus achieving the active steering function of the vehicle.Utilizing the Simulink and Carsim platforms,a complete vehicle model is established,and a frequency response characteristic analysis is conducted on the steering actuator assembly to verify its operational stability.The simulation results demonstrate that the designed control strategy can significantly enhance the vehicle's handling stability.
作者
佟雨哲
张昕
TONG Yuzhe;ZHANG Xin(School of Automotive and Transportation,Shengyang Ligong University,Shenyang 110159,China)
出处
《车辆与动力技术》
2025年第1期21-28,共8页
Vehicle & Power Technology
基金
辽宁省属本科高校基本科研业务费专项资金资助(项目编号:SYLUGXTD07)。
关键词
变角传动比
主动转向
汽车稳定性
MPC
variable angle transmission ratio
active steering
vehicle stability
MPC
