列车运行计划仿真模型研究

摘要

为借助计算机虚拟技术模拟列车运行计划的实施过程,建立仿真模型描述列车运行环境、状态及规则,用以列车运行仿真平台的开发.以改进Petri网为工具,结合铁路运输组织特点,定义个性托肯表示列车,定义颜色集库所描述路网环境及列车运行信息,定义多种变迁实现列车空间位置的变换及运行信息的传递,定义全局时钟递增变量驱动系统运行;基于部件组合思想和同时考虑线路可双向运行和列车运行过程中随机扰动建立的列车运行仿真模型,可根据需要模拟的列车运行计划及关联路网的数据,快速生成与列车运行环境和列车运行规则对应的仿真框架,在根据相关数据对各静态参数进行初始化后,可按设置的区域范围及时段要求模拟列车运行计划.仿真实例表明,模型直观且易于编程实现,仿真结果基本符合客观实际.%In order to simulate the implementation process of train operation plan with the help of computer virtual technology,the simulation model describing train operation environment,state and rules was built for developing train operation simulation platform.Combining with the characteristics of railway transportation organization,the train was defined to be individual token,the railway network environment and train operation information were defined to be places which were expressed by color sets,the location transformation and operation information transfer of train were realized by defining a variety of transitions,and the running of system was driven by defining an increasing variable named global clock with the help of improved Petri nets.The train operation simulation model was based on the thought of component combination,considering the bidirectional operation characteristics of line and the random disturbance in the process of train running at the same time.The simulation framework corresponding to train operation environment and train operation rules could be generated rapidly according to the train operation plan needed simulation and railway network related data.After the initialization of each static parameter according to relevant data,the train operation plan could be simulated according to regional scope and time required.Simulation examples show that the model is intuitive and easy to program,and simulation results are basically consistent with objective reality.