轨道车辆MVB网络实时性能分析与优化研究

摘要

动车组控制系统采用网络来连接各个设备,网络的实时性能直接影响控制系统的性能.本文对TCN标准(IEC61375-1)中的多功能车辆总线MVB的实时性能进行研究,分析其数据通信机制和通信帧类型,建立MVB网络数据通信的仿真模型,根据网络消息数据的通信特点,提出了优化的事件仲裁算法,以期进一步提高MVB网络实时性能,文中对所提算法进行了验证.%The train control system uses networks to connect devices in EMUs. The real-time performance of the networks is one of the main factors affecting the performance of the train control system. The real-time performance of the Multifunction Vehicle Bus specified in the TCN Standards (IEC61375-1) is studied. The frame type and data communication mechanism of the MVB network are analyzed. The model of the MVB communication network is established. According to the characteristics of the communication mode of message data, the novel algorithm of event arbitration is provided in order to improve the real-time performance of the MVB network. The constructed model is verified.