交通运输工程与信息学报

建立了干线协调控制系统的变步长绿信比协同优化模型。在各交叉口单独绿信比优化的基础上,通过计算确定协同优化第一层每一步优化对象、范围和优化步长,当某一步的优化步长不满足约束条件时,保持原有约束条件和最后一步的优化范围,将步长降至1s进入第二层优化获得最优设计方案。模型的特点是每一步纳入多个交叉口,进入优化范围,并使用同一步长一次完成增加全系统带宽的优化。

A split coordination optimization model with variable step for arterial coordination system was built. On the base of individual split optimization of each intersection, the optimized object and scope and step length of each step in the first level were decided. When the step length does not corporate to the constraint condition, the original constraint condition and the optimized scope were kept, and then the step length was minimized to 1 s to enter the second level optimization to get the optimized design plan. The character of the model is to keep many intersections into the optimized scope per step and to use the same step length to finish the adding bandwidth optimization at one time.