IEEE-1394异步传输机制建模及性能分析  

Modeling and performance analysis of IEEE-1394 asynchronous transfer mechanism

作　　者：杨玉生[1] 张春熹[1] 李立京[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《北京航空航天大学学报》2010年第3期311-314,共4页Journal of Beijing University of Aeronautics and Astronautics

基　　金：航空科学基金资助项目(2008ZC51032)

摘　　要：高速数据总线技术是航空电子中的关键技术之一.IEEE-1394是一种串行高速数据总线,已经成功应用于航空电子中.其异步传输模式保证数据传输的可靠性,广泛用于命令、状态数据的传输.为解决IEEE-1394总线异步传输过程中的传输延时、吞吐量以及总线利用率等问题,基于确定与随机Petri网(DSPN,Deterministic and Stochastic Petri Nets),建立了IEEE-1394总线异步传输的节点模型,并基于模型仿真分析了其异步传输系统的性能.通过仿真研究得到了IEEE-1394异步传输系统吞吐量、平均等待时间等性能指标同数据包大小和数据到达速率的关系,并给出了IEEE-1394异步传输数据包到达速率极限的计算方法.High speed data bus technology is one of the core techniques in avionics.IEEE-1394 is a serial high speed data bus,and has been applied in avionics successfully.Its asynchronous transfer mechanism guarantees the reliability of data transferred and is widely used to transfer command and status data.To solve the problems of transmission delay,throughput and bus utilization in IEEE-1394 bus asynchronous transfer,IEEE-1394 asynchronous transfer model was developed based on deterministic and stochastic Petri nets（DSPN）.Furthermore,the asynchronous transfer performance was simulated by means of the established model.Through simulation research,the relationship between IEEE-1394 asynchronous transfer system＇s throughputs,average waiting time and packet size,packet arrival rate was obtained.The computation method for the limitation of IEEE-1394 asynchronous transfer packet arrival rate also was given.

关 键 词：航空电子 1394 性能 PETRI网 异步传输 

分 类 号：V243[航空宇航科学与技术—飞行器设计]