The invention discloses a dangerous goods transportation path planning method under an uncertain time-varying road network. The method comprises the following steps of establishing a dangerous goods transportation planning model considering time-varying characteristics and uncertainty of road conditions and population density information, introducing time-varying fuzzy variables into the model to describe the influence of the population density on the transportation risk, and meanwhile, considering the influence of the road network real-time traffic condition on the transportation risk, and introducing time-dependent equivalent road length into the model to describe the real-time road condition, performing ambiguity resolution by using an opportunity constraint planning method, and finally, solving a simulation result by applying a PSO algorithm, and verifying the applicability of the model by analyzing a numerical instance solving result. According to the method, a path planning scheme with relatively low road risk can be obtained, and compared with a traditional deterministic model, the method has better applicability.
本发明公开了一种在不确定时变路网下的危险品运输路径规划方法,步骤包括:建立考虑路况及人口密度信息时变性与不确定性的危险品运输规划模型;模型引入时变的模糊变量描述人口密度对运输风险的影响,同时,考虑到路网实时交通状况对运输风险的影响,模型引入时间依赖的等效道路长度描述实时道路状况;使用机会约束机会约束规划方法进行解模糊;最后应用PSO算法求解仿真结果,通过对数值实例求解结果的分析,验证了模型的适用性。本发明可以得到具有较低道路风险的路径规划方案,并且比传统的确定性模型具有更好的适用性。
Dangerous goods transportation path planning method under uncertain time-varying road network
一种在不确定时变路网下的危险品运输路径规划方法
2021-09-14
Patent
Electronic Resource
Chinese
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