车载1553B总线的网络演算建模及分析

摘要

针对车载1553B总线的实时性评估问题,提出一种车载1553B总线的网络演算建模与分析方法.分析1553B总线拓扑结构和消息特性的基础上,应用网络演算建立了车载1553B总线的最大延迟计算模型,有效地描述了车载1553B总线的动态行为.实例分析验证了所提方法的有效性,该方法可为构建满足特定实时性要求的车载1553B总线系统提供理论依据.%Aiming at the problem of real-time performance evaluation in the vehicular 1553B bus,a new modeling and analysis method of the vehicular 1553B bus with network calculus (NC) is proposed.Based on the analysis of topology structure and message characteristic of the vehicular 1553B bus,the model for calculating maximum delays are established with NC,which can describe the behavior in the vehicular 1553B bus.A case study of the vehicular 1553B bus is given to verify the proposed method,and it can give the theory evidence for design of the vehicular 1553B bus meeting the real-time performance.