基于Matlab与三维空间几何变换的车辆动态包络线获取方法研究

Research on method of obtaining vehicle dynamic envelope based on Matlab and three-dimensional geometric transformation

为了更加便捷地获取车辆的动态包络线,研究出一种基于Matlab软件与三维空间几何变换理论来获取车辆动态包络线的新方法。以某地铁车辆为研究对象,对地铁车辆进行线路实测,获得车辆的动态偏移量,结合CJJ96—2003《地铁限界标准》计算方法得到车辆的静态偏移量,基于三维空间几何变换理论推导控制点实时坐标,利用Matlab软件仿真计算在实际线路上运行的地铁车辆动态轮廓,得到所有动态轮廓上控制点的坐标,并输出车辆的动态包络线。该研究方法,使得车辆动态包络线的获取更便捷,最终结果更切合实际,从而更加充分地利用限界的有效空间,也为车辆限界计算提供新思路。

In order to obtain the dynamic envelope of vehicles more conveniently,a new method for obtaining the dynamic envelope of vehicles based on Matlab software and three-dimensional geometric transformation theory is proposed.Taking a subway vehicle as the research object,the actual measurement of the subway vehicle line is carried out,and the dynamic offset of the vehicle is obtained.Combined with the calculation method in CJJ 96-2003 Standard for Metro Gauges,real-time coordinates of control points are derived based on the theory of three-dimensional geometric transformation.The dynamic contour of the subway vehicle running on the actual line is simulated by Matlab software,and the coordinates of control points on all dynamic contours are obtained,and the dynamic envelope of the vehicle is also obtained.Through this research method,the vehicle dynamic envelope can be obtained more conveniently,and final results are more practical,thus making full use of the effective space of clearance,and providing a new idea for the calculation of vehicle gauge.