摘要
虚拟编组可有效提升运输能力,是轨道交通领域的研究前沿,其行车方式的变革给列车运行控制带来新的问题。为满足虚拟编组行车紧密追踪及协同作业的安全防护需求,探讨一种基于可达集的虚拟编组列车运行安全防护方法。首先,构造列车运行控制混成自动机模型,更加精确地描述编组列车控制行为;然后,提出一种通过对混成模型过近似可达集求解来确保列车运行安全的防护方法,深入剖析虚拟编组列车运动行为,给出一种面向多面体精化的自适应步长可达集求解算法,能够实时预测前行列车动态轨迹,进而达到最大限度缩短列车追踪间隔的效果;最后,利用实际线路数据进行仿真实验。实验结果表明,该防护方法与传统防护方法相比,可进一步缩短列车追踪间隔,更能满足虚拟编组行车安全防护需求。
Virtual coupling can effectively improve transportation capacity,and it is the frontier research in the field of rail transit.The change of its running mode brings new problems to train operation control.To meet the safety protection requirements of close tracking and collaborative operation of virtual coupling trains,a safety protection method for virtual coupling trains based on reachable sets is discussed.Firstly,a hybrid automaton model for train operation control is constructed to describe the control behavior of the coupling train more accurately;then a protection method is proposed to ensure the safety of train operation by getting the over-approximation reachable set of the hybrid model.The behavior of virtual coupling trains is deeply analyzed,and an adaptive step-size reachable set solution algorithm for polyhedral refinement is given,which can quickly predict the running trajectory of the preceding train,and then achieve the effect of minimizing the train tracking interval.Finally,the simulation experiment is carried out using the actual line data.The results show that,compared with the traditional protection method,this protection method can further shorten the train tracking interval and better meet the safety protection requirements of virtual coupling.
作者
刘冰
王海峰
柴铭
LIU Bing;WANG Haifeng;CHAI Ming(School of Electronics and Information Engineering,Beijing Jiaotong University,Beijing 100044,China;National Engineering Research Center of Rail Transportation Operation and Control System,Beijing Jiaotong University,Beijing 100044,China)
出处
《铁道标准设计》
北大核心
2023年第7期161-168,共8页
Railway Standard Design
基金
北京市自然科学基金“轨道交通联合”项目(L201004)
国家自然科学基金项目(61473029)
国家重点基础研究计划973课题(2014CB340703)。
关键词
城市轨道交通
列车运行防护
虚拟编组
可达集
混成自动机
urban rail transit
train operation protection
virtual coupling
reachable set
hybrid automata
