摘要
汽车侧倾控制通常被动地以减小侧倾角为目标,在转弯中这种控制对提高操纵稳定性、车速、防止侧翻的效能有限。提出一种在转弯时基于主动悬架控制汽车向转弯方向侧倾的控制方法,建立包含2自由度转向模型和4自由度侧倾模型的6自由度车辆模型,通过动力学分析确立期望侧倾角,建立使稳态侧倾角误差为零的主动侧倾滑模控制。仿真计算证实了该控制方法可使乘员感知的侧向加速度和横向载荷转移率大大减小,有效提高了转弯时的操纵稳定性、平顺性、通行速度,大大减小侧翻的可能性。
The rolling control of car focus usually on reducing the roll angle passively. This control has the limited performance for increasing handing stability,passing speed,ride comfort and preventing rollover when the car is turning. This project proposes a control methodology to control the automobile to roll toward the turning direction by using the active suspension. A 6-DOF vehicle model with a 2-DOF steering model and a 4-DOF roll model is established. The active roll sliding mode controller which makes the steady-state roll angle error be zero is established after the desired roll angle is established by dynamic analysis. The simulation results confirm the effectiveness of the control method. The controller makes the perceived lateral acceleration and the lateral load transfer rate be greatly reduced,which effectively improves the handling stability,ride comfort,and the vehicle speed when vehicle is turning,and makes the possibility of rollover be decreased extremely.
作者
姚嘉凌
王蒙
李智宏
任杉
孙宁
YAO JiaLing;WANG Meng;LI ZhiHong;REN Shan;SUN Ning(College of Automobile and Traffic Engineering, Nanfing Forestry University, Nanjing 210037, China)
出处
《机械强度》
CAS
CSCD
北大核心
2018年第3期534-539,共6页
Journal of Mechanical Strength
基金
江苏省"六大人才高峰"高层次人才选拔培养对象资助项目(2015-JXQC-005)
江苏省自然科学基金(BK20130977)资助~~
关键词
主动侧倾
主动悬架
滑模控制
感知侧向加速度
横向载荷转移率
Active roll
Active suspension
Sliding mode control
Perceived lateral acceleration
Lateral load transfer rate
