双前导车信息对交通流稳定性影响的分析  

Analysis on the stability of traffic flow with the information of two preceding cars

作　　者：廖孝勇[1,2] 孙棣华[1,2] 彭光含[1] 刘卫宁[3,2] 古曦[3] 

机构地区：[1]重庆大学自动化学院,重庆400044 [2]重庆大学信息物理社会可信服务计算教育部重点实验室,重庆400044 [3]重庆大学计算机学院,重庆400044

出　　处：《重庆大学学报（自然科学版）》2011年第8期13-17,23,共6页Journal of Chongqing University

基　　金：国家'十五'科技攻关资助项目(2002BA404A07);'211工程'三期建设资助项目(S-09108);高等学校博士学科点专项科研基金资助项目(2009019111022)

摘　　要：稳定性分析是交通流理论的重要问题之一,因为阻塞现象可视为动力系统的不稳定和相变。通过考虑双前导车信息的影响,获得了1个扩展的优化速度模型,借助稳定性理论得到了扩展模型的稳定性条件,同时运用非线性分析推导出mKdV方程来描述临界点附近的交通行为。数值仿真证实了分析结果,并表明考虑双前车更有效抑制交通阻塞。因此,次邻近前车对交通动力学有很强的影响,对稳定交通流起到重要作用。The stability analysis is one of the important problems in the traffic flow theory,where the congestion phenomena can be regarded as the instability and the phase transition of a dynamical system.An extended optimal velocity model is deduced by considering the effect of the information of two leader cars.The stability condition of the extended model is obtained by using the linear stability theory.The modified Korteweg-de Vries（mKdV） equation is derived to describe the traffic behavior near the critical point by applying the nonlinear analysis.The numerical simulation results demonstrate the analytical results and show that the traffic congests are suppressed more efficiently by considering two vehicles ahead.Therefore,the next-nearest-neighbor car has strong effects on traffic dynamics and plays an important role on stabilizing the traffic flow.

关 键 词：交通流 跟驰模型 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]