本发明公开了交通控制技术领域,特别涉及一种适应新型混合交通流场景的匝道协调控制方法及设备。包括:S1.获取交通流宏观基本图;S2.根据CAV渗透率对所述宏观基本图进行分段拟合,获取MFD分段拟合函数;S3.根据路段平均密度识别拥堵路段,并基于所述拥堵路段中车辆的平均行程长度,确定匝道的控制范围;S4.根据所述MFD分段拟合函数,构建所述交通流的离散化过程模型;S5.基于所述离散化过程模型,采用模型预测控制方法,建立分层优化控制模型,输出匝道的协调控制结果。本申请还包括实现本方法的设备,将多控制量的协调优化问题转化为单控制量的优化与分配,降低了控制模型的计算复杂度,从而优化交通信号控制和匝道流量分配,达到缓解交通拥堵的效果。
The invention discloses the technical field of traffic control, and particularly relates to a ramp coordination control method and device suitable for a novel mixed traffic flow scene. Comprising the following steps: S1, acquiring a traffic flow macroscopic fundamental diagram; s2, performing segmentation fitting on the macroscopic fundamental diagram according to CAV permeability to obtain an MFD segmentation fitting function; s3, recognizing a congested road section according to the road section average density, and determining a ramp control range based on the average travel length of vehicles in the congested road section; s4, according to the MFD piecewise fitting function, constructing a discretization process model of the traffic flow; and S5, based on the discretization process model, establishing a layered optimization control model by adopting a model prediction control method, and outputting a coordination control result of the ramp. The invention further comprises a device for realizing the method, a multi-control-quantity coordinated optimization problem is converted into single-control-quantity optimization and distribution, and the calculation complexity of a control model is reduced, so that traffic signal control and ramp flow distribution are optimized, and the effect of relieving traffic jam is achieved.
一种适应混合交通流场景的匝道协调控制方法及设备
2025-07-29
Patent
Electronic Resource
Chinese