考虑多车稳态期望速度效应的拥堵控制跟驰模型

拥堵控制是智能交通系统的一个关键问题。基于Konishi等的研究成果,考虑多车稳态期望速度效应对车流运动特性的影响,提出一个新的拥堵控制跟驰模型。运用系统控制理论,得到系统保持稳定的判据。数值仿真结果表明:与前人研究成果相比,多车稳态期望速度效应对交通流具有更好的致稳作用,提高了车流陷入交通阻塞状态的阈值。因此,提出的模型较前人的成果能进一步缓解交通拥堵程度,使交通系统稳定性增强。

A new congestion control car-following model with consideration of multi-vehicles' steady-state desired speed effect

In the background that congestion control is one of key problems in intelligent transportation system, based on the pioneer work of Konishi et al., we propose a new congestion control car-following model by considering the multi-vehicles'' steady-state desired speed effect. By using the system control theory, the stability criterion is derived. To check the validity of the present theoretical scheme, the numerical simulation is carried out for the new model, and the simulation results show that comparing with the previous research results, multi-vehicles'' steady-state desired speed effect can enhance the stability of traffic flow, and reduce the effect range of traffic congestion. Therefore, the new model can suppress the traffic jam more effectively and make the traffic flow operate more smoothly and orderly.