地铁车辆救援连挂分析及虚拟仿真系统搭建

Analysis of Metro Train Rescue Coupling and Construction of Virtual Simulation System

为提高地铁列车的事故救援能力,实现救援连挂过程的三维可视化,建立覆盖多种工况的曲线模型,以及地铁车辆动态相对位置和姿态计算模型。采用一维黄金分割搜索算法,求解地铁车辆位置和姿态,以及车钩转角。基于虚拟现实技术,在Unity平台上搭建地铁车辆救援连挂虚拟仿真系统。虚拟仿真系统可以生成三维虚拟救援场景,实时观察车辆位置和姿态,以及车钩转角,根据用户需求,控制车辆速度和运动方向。

In order to improve the accident rescue ability of metro train and realize the three-dimensional visualiza⁃tion of the rescue coupling process,a curve model covering various conditions and a calculation model for dynamic po⁃sition and attitude of the car were established.One-dimensional golden section search algorithm is used to solve the position and attitude of metro cars and the coupler angle.Based on virtual reality technology,a virtual simulation sys⁃tem of metro cars in rescue coupling process is built on Unity platform.The virtual simulation system can generate three-dimensional virtual rescue scene,observe the position and attitude of cars and the rotation angle of couplers in real time,and control the speed and direction of cars according to the needs of users.