基于随机可达集的“撞软墙”移动闭塞列车追踪安全防护方法
王成
Train Tracking Safety Protection Method of Stochastic Reachable Set-based Hit-Soft-Wall Moving Block
WANG Cheng
-
作者信息:中铁第四勘察设计院集团有限公司， 430063， 武汉
-
Affiliation:China Railway Siyuan Survey and Design Group Co., Ltd., 430063, Wuhan, China
-
关键词:
-
Key words:
-
DOI:10.16037/j.1007－869x.20240976
-
中图分类号/CLCN:U284.44
-
栏目/Col:通信信号
摘要:
［目的］现有城市轨道交通列车控制系统所采用的“撞硬墙”移动闭塞防护模式，虽然在一定程度上缩短了列车的追踪间隔，但仍无法满足高峰时段的运营需求,故有必要基于随机可达集的“撞软墙”移动闭塞列车追踪安全防护方法进行研究。 ［方法］考虑列车运行过程中存在随机扰动的因素，分析实现追踪安全防护算法的两个关键部分的表示形式，即前车的全过程预测轨迹及追踪列车的安全制动轨迹。结合前车和本车的概率分布函数，建立碰撞概率的高效计算模型，根据对城市轨道交通列车的安全性验证结果生成相应的安全防护曲线。基于北京地铁11号线西段线路数据，对所提出的方法进行仿真验证。［结果及结论］试验结果表明，与短时间预测相比，基于随机可达集的列车追踪安全防护方法能够在实现完全避撞的基础上，延长追踪列车安全防护曲线的反向计算起点，缩短列车间的追踪间隔，证明了该方法的必要性和适用性。
Abstracts:
［Objective］ Although the hit-hard-wall moving block protection mode adopted by the existing urban rail transit train control system has shortened the train tracking interval to a certain extent, it still cannot meet the operation needs during peak hours. Therefore, it is necessary to study the hit-soft-wall moving block train tracking safety protection method based on stochastic reachable set. ［Method］ Considering the random disturbance factors in the train operation process, the representation of two key parts: the full process prediction trajectory of the leading train and the safe braking trajectory of the tracking train in tracking safety protection algorithm is analyzed. Combining the probability distribution functions of the leading train and the ego train（current train）, an efficient calculation model of the collision probability is established, and the corresponding safety protection curve is generated according to the safety verification results of urban rail transit trains. The proposed method is simulated and verified based on the data of Beijing Subway Line 11 west section. ［Result & Conclusion］ The experimental results show that compared with the short-time prediction, the train tracking safety protection method based on stochastic reachable sets can extend the reverse calculation starting point of the tracking train safety protection curve, and shorten the tracking interval between trains on the basis of achieving complete collision avoidance, proving the necessity and applicability of this method.
- 上一篇: 刚性接触网新型高速汇流排参数设计研究
- 下一篇: 城市轨道交通列车控制系统与云边计算适配性分析
过刊浏览
资料下载
友情链接