AFDX端系统设计中的发送调度方法研究与实现  

Research and Implementation of Scheduling Method in AFDX End System

作　　者：贾卫松[1] 翟正军[1] 牛仕奇[2] 

机构地区：[1]西北工业大学计算机学院,陕西西安710072 [2]西北工业大学航海学院,陕西西安710072

出　　处：《计算机测量与控制》2010年第11期2612-2615,共4页Computer Measurement &Control

基　　金：国防"十一五"预研项目(B2720060300)

摘　　要：通过对AFDX协议的研究及对当前端系统常用调度方法的分析,提出索引表静态优先级调度方法(AFDX Index Priority Scheduling——AISP);针对FPGA芯片的设计特点,给出AISP方法的逻辑实现;从优先级、流量整形、确定性等方面对该方法进行分析和评价,并利用Matlab工具对虚拟链路最大延迟和平均延迟进行仿真;仿真结果证明,AISP调度方法具有较好的实时性,并且能够满足不同紧急程度的网络数据传输的需求。On the base of the research in AFDX protocol and the analysis on the prevailing scheduling methods,this paper presents AISPZ——AFDX Index Static Priority Scheduling Method.According to the design features of the FPGA,the logic design of AISP is implemented.Different aspects of this method,such as priority,traffic control,deterministic,etc.are analyzed and evaluated,and the largest latency and the average latency of VL is simulated by Matlab software.The result of the simulation proved that AISP method meets the real-time requirement effectively and the different needs in importance or urgency of the avionic data transmission can be satisfied.

关 键 词：优先级调度 最大延迟仿真 确定性网络传输 

分 类 号：TN915[电子电信—通信与信息系统]