坐标变换技术用于碰撞试验中车身标志点的测量

提出一种基于已知3点在两个坐标系中坐标值,实现两坐标系之间坐标变换的测量方法,扩大了测量仪器的测量范围,提高了测量速度。将这种方法用于实车碰撞试验过程中,碰撞前后的一些车身标志点的测量,对实验结果进行误差分析,找出影响测量误差的因素,并提出解决方案,通过多次实验反复验证均取得较好的结果,从而验证了此方法的可行性。

Coordinate Transformation Technology and Its Use for Measuring Car-body Index Points in Collision Test

By coordinate values of known three points in two coordinate systems,coordinate transformation between the two coordinate systems is realized.The measurement extends the measuring range of instrument and increases the measuring speed.The method is used for measurement of car-body index points in the automobile collision test.The error analysis on test result is made.The factors influencing measuring error are found out and the solving scheme is put forward.Multiple test results show the measurement is feasible and applicable.