用于微观仿真车辆模型中轨迹的简化算法

实际车辆运行轨迹的测量和计算都比较复杂。现存的微观仿真车辆模型，往往都回避了车辆轨迹的计算，而用直线运行来近似代替。构建微观车辆模型时，在影响车辆运行轨迹的各个因素中，可以只考虑前轮转向角和前后轴间距离2个主要因素，而质量、摩擦、刚体系数等其他次要因素是可以忽略的。据此，给出了车辆运行轨迹计算的简化算法，并为此进行了若干试验论证。结果表明，这种简化，一方面使得车辆微观模型在轨迹上更加接近于真实，另一方面，算法计算量小，是微观仿真中可以接受的。

Simplified Method for Microscopic Simulation of Vehicle Moving Track

The measurement and calculation of vehicle moving track is quit complex in fact. Then, existing vehicle models in traffic system micro simulation avoid calculation of track; instead, those models substitute beeline for moving track. The main of various factors in which the moving track of vehicle is effected such as front wheel drive turning angle and the distance between anterior and after axes have been merely taken into account in the paper, when the micro vehicle model is established. And that the other influencing factors such as mass, friction and rigid body coefficient etc are negligible, because they are subordinate in this study. Hereby, the simplifying calculating moving track of vehicle is put forward, moreover, some experiments have been carried through to demonstrate. At last, we come to the conclusion that the method is able to make model more real and only increase a little calculation. It is receivable in micro simulation.