The invention relates to a control method and system for improving the passing efficiency of a narrowed road section. The control method comprises the steps: S1, the average speed, the flow and the traffic flow density, obtained at each sampling moment, of various types of vehicles in various lanes of various road sections are recorded; S2, a traffic flow prediction model is established on the basis of a Multi-Class CTM model and in combination with the number of vehicles for speed limiting and lane changing of different lanes, and a measured value serves as an initial condition for predictingfuture dynamic conditions of traffic by the prediction model; S3, based on the traffic flow prediction model, an objective function and constraint conditions of an optimization problem are established, and a finite time domain optimization problem is solved; and S4, the first element in the optimization problem solution sequence acts on the controlled object based on a rolling optimization framework of model prediction control, the next sampling moment is entered, and the steps are repeated until the whole sampling time period is completed. According to the scheme, the application speed and the traffic state change between different lanes within limited time after lane changing control are predicted, and the prediction precision is improved.
本发明属涉及一种提高公路变窄路段通行效率的控制方法和系统,包括:S1.记录每个采样时刻获得的各路段各车道中各类型车辆的平均速度、流量和车流密度;S2.基于Multi‑Class CTM模型,结合不同车道限速和换道的车辆数,建立交通流预测模型,其中测量值作为预测模型预测交通未来动态的初始条件;S3.基于交通流预测模型,建立优化问题的目标函数和约束条件,并求解有限时域优化问题;S4.基于模型预测控制的滚动优化框架,将优化问题解序列中第一个元素作用于被控对象,进入下一采样时刻,重复上述步骤直至完成整个采样时段。本方案预测了施加速度和换道控制后不同车道间有限时间内的交通状态变化,提高了预测精度。
Control method and system for improving passing efficiency of narrowed road section
一种提高公路变窄路段通行效率的控制方法和系统
2020-06-19
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06K Erkennen von Daten , RECOGNITION OF DATA / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES |
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