分布式ATP仿真测试系统的关键技术研究

摘要

ATP是现代铁路信号系统中不可缺少的核心部分，对列车的运行安全、提高行车效率起着重要作用。该文论述了一个分布式城市轨道交通ATP仿真测试系统所采用的仿真钟推进策略和集成环境。系统采用了先进的半实物仿真和分布式交互仿真技术，能够为ATP设备提供一个拟实工况，从而测试设备的准确性和可靠性。针对半实物仿真和分布式仿真的要求，在全数字仿真和半实物仿真中分别采用混合机制的事件驱动策略和墙钟驱动策略。由于CORBA相对于其他分布式仿真集成环境具有功能和价格的相对优势，所以利用CORBA集成各子系统。%Automatic train protection (ATP)is the necessary kernel of modern railway signal system,it is important for the safety and efficiency of the train＇s running. The time-management strategy and integrated infrastructure of a ATP detective system of subways based on distributed simulation are investigated.The technologies of semi-physical simulation and distributed interactive simulation are applied in the analysis and design of the system,the running situation of the ATP facilities is virtualized,so the accuracy and reliability can be tested. Concerning the traits of semi-physical simulation and distributed simulation,the event-driven strategy using hybrid mechanism is applied in the digital simulation,and the wallclock-driven strategy is applied in the semi-physical simulation. For the priorities of functions and cost compared with other distributed simulation infrastructure,CORBA is used to integrate the subsystems.