The invention provides a traffic threshold control subarea bearing capacity estimation method based on MFD. The method comprises the following steps: S1, constructing a threshold control subarea MFD based on a vehicle travel track; S2, performing threshold control subarea MFD main curve analysis: using an HS main curve algorithm to preliminarily fit the MFD and calculate the projection of the original MFD on the main curve, i.e., the centroid point of the main curve, so as to reduce the interference for the subsequent fitting of the MFD by using a function; S3, carrying out threshold control subarea MFD function fitting and bearing capacity estimation: fitting the threshold control subarea MFD by using multiple functions, and establishing a quantitative relationship between the number of regional accumulated vehicles and the regional vehicle travel completion flow. According to the method, accurate road network critical state information is provided for regional threshold control.
本发明提供了一种基于MFD的交通门限控制子区承载力估计方法,该方法包括如下步骤:S1构建基于车辆出行轨迹的门限控制子区MFD;S2门限控制子区MFD主曲线分析:利用H‑S主曲线算法对MFD进行初步拟合并计算原始MFD在主曲线上的投影,即主曲线的质心点,为后续利用函数对MFD进行拟合减少干扰;S3门限控制子区MFD函数拟合与承载力估计:利用多种函数对门限控制子区MFD进行拟合,建立区域累积车辆数和区域车辆出行完成流量的定量关系。本发明的方法为区域门限控制提供较为准确的路网临界状态信息。
Traffic threshold control subarea bearing capacity estimation method based on MFD
一种基于MFD的交通门限控制子区承载力估计方法
2020-11-03
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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