混合机制下的SpaceWire传输延时仿真分析  

Transmission delay simulation and analysis in SpaceWire under combined mechanism

作　　者：代真[1] 何锋[1] 熊华钢[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《计算机工程与设计》2015年第1期1-5,102,共6页Computer Engineering and Design

基　　金：国家自然科学基金项目(61301086)

摘　　要：为确保SpaceWire网络中高实时性消息的确定性端到端传输延时,提出将网络消息分为时间触发消息和事件触发消息的设计方法。通过对时间触发消息发送时刻的调度以及对虫洞路由器工作时间轴的规划,实现对网络消息传输的控制,设计开发一套仿真系统;构建3类网络场景,对消息传输延时仿真结果进行分析评价,验证了该系统兼并事件触发网络与时间触发网络的特点;提出一种基于SpaceWire组路由特点的网络重构方案,仿真实验验证了该方案的可行性。To ensure the deterministic end-to-end transmission delay of high real time messages in SpaceWire networks, a design method of dividing the messages into time-triggered ones and event-triggered ones was proposed. By scheduling the time-trig- gered message＇s transmission time and the wormhole router＇ s working timeline, the control on the network＇s message transmis- sion was achieved, and a simulation system was designed and developed. Three types of network scenarios were designed, and by analyzing and evaluating the simulation results, the fact that the system combined the features of event-triggered and time-trig- gered networks was demonstrated. A network reconstruction scheme was proposed based on group routing, and the feasibility of the scheme was validated by simulation.

关 键 词：星载总线 建模仿真 延时评价 时间触发 重构 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]