基于STPA与多智能体的列控运营场景危险分析及仿真验证方法

针对列控系统运营场景危险行为与危险致因辨识的复杂性特征及其缺乏有效的仿真验证手段等问题,考虑致因因素间呈现的非线性特点,提出1种将系统理论过程分析(STPA)方法与多智能体仿真技术相结合的列控运营场景危险分析及仿真验证方法.以单电台无线闭塞中心(RBC)切换场景为例,构建分层控制多智能体结构模型,利用STPA方法辨识R...

Hazard Analysis and Simulation Verification Method of Train Control Operation Scenarios Based on STPA and Multi-Agent

In view of the complexity characteristics of dangerous behavior and hazard cause identification in the operation scenarios of train control system,as well as the lack of effective simulation and verification method,and considering the nonlinear characteristics among causal factors,a method founded on System Theoretical Process Analysis(STPA)method and multi-agent simulation technology is proposed for the hazard analysis and simulation verification of train control operation scenarios.Taking the RBC handover scenario of single Radio Block Center(RBC)as an example,a hierarchical control multi-agent structure model is constructed.The STPA method is used to identify the potential unsafe control behaviors in the RBC handover scenario,analyze the hazard causes leading to unsafe control and develop system safety constraints according to hazard causes.Based on multi-agent simulation technology,a multi-agent simulation platform for RBC handover scenario is designed and built.Through the separate injection of hazard causes and safety constraints,the simulation analysis of dangerous scene is carried out to verify the correctness of hazard analysis and the feasibility of safety constraints.Relying on the data of a section of the down line of Wuhan-Guangzhou section of Beijing-Guangzhou high-speed railway,the unsafe control behavior of RBC1-ATP-USCA-7 in the RBC handover scenario is simulated and verified.Results show that there is a risk of traffic accident without safety constraints.After the injection of safety constraint,the traffic safety is guaranteed accordingly.