Over-speed protection algorithm for Onboard System of CTCS of High-speed Railway
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摘要: 列控车载系统是一个典型的安全苛求系统,车载系统超速防护算法对列控系统的安全性具有重要影响。本文结合高速列车动力学模型、延时特性和混杂特征,提出了车载超速防护算法及车载系统的混杂建模方法。利用Simulink/Stateflow混合仿真技术实现了车载超速防护算法的仿真,并以区间两车追踪场景为例对超速防护算法进行验证。验证结果表明该超速防护算法是有效的,区间运行的两辆高速列车能够实现避撞功能。
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关键词:
- 车载系统 /
- 超速防护 /
- Simulink/Stateflow /
- 两车追踪 /
- 仿真
Abstract: As a core system in CTCS-3(Chinese Train Control System Level 3), the Onboard System was a typical safety-critical system, the over-speed protection algorithm had an important influence on Train Control System. Based on high-speed train dynamics model, time delay characteristics, and mixed features, the paper proposed vehicle over-speed protection algorithm and hybrid modeling method. The simulation of over-speed protection algorithm was implemented by using Simulink/Stateflow mixed technology. The interval two train tracking scenario was taken as an example to validate the algorithm. The simulation showed that this over-speed protection algorithm was verified, collision avoidance of two trains running in a block section could be implemented.-
Keywords:
- Onboard System /
- automatic train protection /
- Simulink/Stateflow /
- two train tracing /
- simulation
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