混有协同自适应巡航控制车辆的异质交通流稳定性解析与基本图模型

发布时间：2018-06-26 09:48

本文选题：异质交通流 + 稳定性解析　；参考：《物理学报》2017年09期

【摘要】：针对传统车辆和协同自适应巡航控制(cooperative adaptive cruise control,CACC)车辆构成的异质交通流,研究其稳定性与基本图模型.应用实车测试验证的CACC模型和智能驾驶员模型(intelligent driver model)分别作为CACC车辆和传统车辆的跟驰模型,建立异质流稳定性解析框架,研究不同平衡态速度、不同CACC车辆比例时的异质流稳定性.推导异质流基本图模型,并进行数值仿真实验.研究结果表明,在传统车辆稳定的速度范围,异质流处于稳定状态.在传统车辆不稳定的速度范围,CACC车辆比例增加以及平衡态速度远离9.6—18.6 m/s速度范围,均能够改善异质流的不稳定性.通行能力随着CACC车辆比例的增加而提高.此外,CACC模型的期望车间时距越大,异质流稳定域越大,但通行能力降低.因此,恒定车间时距CACC控制策略下的期望车间时距取值应权衡异质流稳定域和通行能力两个方面的影响.
[Abstract]:In this paper, the stability and the basic graph model of the heterogeneous traffic flow formed by the traditional vehicle and the cooperative adaptive cruise control (cooperative adaptive cruise control) vehicle are studied. Using the CACC model verified by real vehicle test and intelligent driver model (intelligent driver model) as the car-following model of CACC vehicle and traditional vehicle, the analytical framework of heterogeneous flow stability is established, and the different equilibrium velocities are studied. The stability of heterogeneous flow under different CACC vehicle ratios. The basic graph model of heterogeneous flow is derived, and the numerical simulation experiment is carried out. The results show that the heterogeneous flow is in a stable state in the stable speed range of the traditional vehicle. The instability of heterogeneous flow can be improved by increasing the proportion of CACC vehicles in the unstable speed range of traditional vehicles and keeping the equilibrium velocity away from 9.6-18.6 m / s velocity range. Capacity increases with the increase in the proportion of CACC vehicles. In addition, the larger the expected workshop time interval of CACC model, the larger the stable region of heterogeneous flow, but the lower the capacity. Therefore, the expected workshop time distance under the constant workshop interval CACC control strategy should weigh the influence of heterogeneous flow stability region and traffic capacity.
【作者单位】：东南大学交通学院城市智能交通江苏省重点实验室;现代城市交通技术江苏高校协同创新中心;桂林电子科技大学;华蓝设计(集团)有限公司;
【基金】：国家自然科学基金(批准号:51478113,51508122) 东南大学优秀青年教师教学科研资助项目(批准号:2242015R30028) 广西科技攻关计划(批准号:桂科攻15248002-10)资助的课题~~
【分类号】：U491.112

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