基于SPN的CTCS-3级列控系统RBC实时性能分析

Real-time Performance Analysis of RBC System for CTCS Lever 3 Using Stochastic Petri Networks

RBC(无线闭塞中心)实时性能指标是影响CTCS-3级列控系统运行的关键要素。本文将随机Petri网和马尔可夫随机过程理论结合起来,提出一种新的系统性能分析方法,剖析CTCS-3级列控系统的运行机制,建立RBC子系统周期处理和非周期处理的随机Petri网模型,并利用ERTMS/ETCS的参考数据,分析GSM-R通信环境下RBC的实时性能,在不同系统周期和列车交互数量下得出RBC子系统平均延时曲线。本文对我国CTCS-3级列控系统的规范制定和系统开发具有一定的借鉴意义。

The real-time performance index of the RBC（Radio Block Center） system is the key element in Ope-ration of the CTCS-3 train control system.This paper proposes a new method for analyzing system perfor-mance according to the theories of the Markov random process and stochastic Petri Networks.It also analyzes the operating mechanism of the CTCS-3 system,constructs the stochastic Petri Networks model of RBC which is divided into the cycle time sub-model and non-cycle time sub-model,and makes use of the reference data of ERTMS / ETCS to analyze the real-time performance of RBC under the GSM-R communication environment.Finally,this paper gets the average delay curves of different parameters in terms of the system cycle and number of trains.The result supplies reference to specifications formulation and practical development of the CTCS-3 train control system.