摘要
为了研究驾驶员预瞄时间与公路弯道半径耦合特征对汽车操纵稳定性的影响,建立了人-车-路系统动力学模型,通过基于实际道路数据的仿真试验,分析了驾驶员预瞄时间和弯道半径对汽车动力学特征和路径跟踪情况的影响,验证了模型的正确性.利用相轨迹变化、轮胎侧向力、汽车行驶轨迹偏差、车身姿态变化、汽车状态变量(纵向速度、侧向速度、横摆角速度)参数,分析了驾驶员预瞄时间和公路弯道半径的耦合特征对汽车操纵稳定性的影响.结果表明:驾驶员预瞄时间与公路弯道半径存在显著的耦合特征,当汽车的纵向速度、道路横坡度相同时,随着驾驶员的预瞄时间缩短,汽车安全运行所需的弯道最小半径增大.
A driver-vehicle-road system dynamics model was established to investigate the impact of coupling characteristics of driver preview time and road bend radius on vehicle handling stability.Through the simulation experiment based on actual road data,the effects of driver preview time and road bend radius on vehicle dynamics characteristics and path tracking were analyzed,and the correctness of the model was verified.The effects of the coupling characteristics of driver preview time and road bend radius on vehicle handling stability were investigated based on phase trajectory,tire lateral force,vehicle track deviation,body attitude and vehicle state variables of longitudinal speed,lateral speed and yaw rate.The simulation results indicate that the relationship between driver preview time and road bend radius has significant coupling characteristics.When the vehicle longitudinal speed and road cross slope are the same,the minimum radius of the curve required for the safe operation of vehicle is increased with the shortening of driver preview time.
作者
王宪彬
韩红
施树明
WANG Xianbin;HAN Hong;SHI Shuming(School of Traffic Transportation,Northeast Forestry University,Harbin,Heilongjiang 150040,China;Traffic College,Jilin University,Changchun,Jilin 130025,China)
出处
《江苏大学学报（自然科学版）》
CAS
北大核心
2022年第3期249-255,共7页
Journal of Jiangsu University：Natural Science Edition
基金
中央高校基本科研业务费专项资金资助项目(2572019BG04)
黑龙江省自然科学基金资助项目(E2015052)。
