基于Carsim的弯道路段行车轨迹研究

针对受驾驶人自身驾驶经验和习惯、视野、道路周边环境等因素影响的车辆行驶轨迹,探究了典型车辆行驶轨迹(正常轨迹、理想轨迹、切线轨迹、漂移轨迹、摇摆轨迹和修正轨迹)条件下的车辆动力学响应. 在Carsim环境中构建了以6种行车轨迹为道路中心线的弯道路段,并使车辆的左前轮始终沿道路中心线行驶,仿真过程中记录车辆动力学参数的时变曲线. 研究表明:车辆沿切线和正常轨迹行驶时,能够以安全、高效、舒适的理想状态通过弯道路段;而当车辆沿修正轨迹、摇摆轨迹等行驶时,行驶稳定性和舒适性较差.

Study on Vehicle Trajectory on Road Curved Section Based on Carsim

Based on the vehicle trajectory influenced by driving habits and experience, visual field and traffic environment, vehicle dynamic response is studied under typical driving trajectories, e.g.normal, desired, cutting, drifter, swing and correcting trajectories. Road curved sections with the road axis defined by the six vehicle trajectories are designed in Carsim environment, and the left front wheel of the vehicle is assumed to move along the road axis. During simulation, vehicle dynamic parameters are monitored and recorded. The results show that while vehicle travels along the cutting and normal trajectories, vehicle could pass through the curved section in safety, efficient and comfortable status; while vehicle travels along correcting and swing trajectories, driving stability and driving comfort are worse.