The invention provides a train energy-saving speed curve optimization method based on position discretization dynamic planning, belongs to the field of train operation optimization, and mainly solvesthe problem that dynamic planning taking time as an independent variable cannot well process line speed limitation and track gradient change. According to the invention, basic resistance, ramp resistance, train traction characteristics and other factors are considered to establish a train kinetic model by taking the train position as an independent variable and the speed and time as state variables, a train energy-saving operation optimization problem is constructed, position, speed, time and train control coefficients are discretized according to line conditions to form a state space, the recursion equation of the state is obtained, a train energy-saving speed curve is determined through dynamic planning forward state search and reverse control search, and the method has the advantages ofbeing high in solving speed, capable of finding a globally optimal solution and the like.
本发明提供了一种基于位置离散化动态规划的列车节能速度曲线优化方法,属于列车运行优化领域,主要解决以时间为自变量的动态规划不能很好地处理线路速度限制、轨道坡度变化的问题。本发明考虑基本阻力、坡道阻力和列车牵引特性等因素,以列车位置为自变量、速度和时间为状态变量建立列车动力学模型,构造列车节能运行优化问题,根据线路条件将位置、速度、时间以及列车控制系数离散化构成状态空间,得到状态的递推方程,用动态规划正向状态搜索与反向控制搜索确定的列车节能速度曲线,该方法具有求解速度快、能找到全局最优解等优点。
Train energy-saving speed curve optimization method based on position discretization dynamic planning
一种基于位置离散化动态规划的列车节能速度曲线优化方法
19.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
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