基于全速度差模型的拥堵吸收驾驶策略

摘要

Jam-absorption driving (JAD) is a kind of driving behavior that eliminates the traffic conges-tion .When a car according to the specified speed reaches the congestion area ,the congestion termi-nates just .Because the absorption-car (the car performing JAD) may perturbs other cars to become a secondary traffic jam ,some researchers combines the traffic stability with Jam-absorption driving to solve the problem .However ,the proposed model and stability analysis contain certain shortcomings . The traffic situation is out of the realistic situation and the stability analysis is not comprehensive e-nough .In this regard ,considering the JAD under different stability states of traffic flow ,the JAD model of high and low traffic densities in the metastable zone is established based on Full Velocity Difference (FVD ) model . The stability condition without the secondary traffic jams is obtained through the JAD parameter curves and critical perturbation lines ,w hich is verified by the numerical results .T he results show that the model is reasonable and the stability analysis is accurate .%拥堵吸收驾驶是对交通拥堵进行吸收的驾驶行为,它涉及一辆车按指定的速度行驶,当车辆到达拥堵区域时,拥堵刚好解除的驾驶意图.由于这一驾驶行为可能会导致后续车辆的"二次拥堵",故而有学者将车流稳定性与拥堵吸收驾驶进行了结合,但其所使用的模型及稳定性分析存在不足,比如交通情形脱离实际,稳定性分析单一等.文中在全速度差模型(FVD模型)的基础上考虑了不同稳定状态车流的拥堵吸收驾驶行为,对亚稳态区中高低密度车流的拥堵吸收驾驶进行了建模,通过模型参数曲线和临界扰动强度曲线得出了车流不产生"二次拥堵"的稳定性条件,并用数值仿真予以验证,结果证明模型及稳定性分析的准确性.