基于Petri网理论的FC-AE-1553性能分析  

Applying DSPN(Deterministic and Stochastic Petri Nets) to Performance Analysis of FC-AE-1553 Integrated Avionics Bus System

作　　者：张建东[1] 时洋洋[1] 田海宝[1] 史国庆[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710072

出　　处：《西北工业大学学报》2010年第3期388-392,共5页Journal of Northwestern Polytechnical University

基　　金：航空科学基金(2007ZC53033;20075153018)资助

摘　　要：随着综合航电系统的发展,1553B总线已经不能满足发展需要,FC-AE-1553协议作为新一代的高性能网络通信协议被引入到航电系统中,其性能指标与整个航电系统的总体指标有着密切的关系。文中给出了一套完整的基于确定与随机Petri网的FC-AE-1553性能评价模型和算法。通过对模型的求解,得到了网络系统的2个重要性能指标总线负载、延迟时间随消息数变化的规律,通过对性能曲线的分析,可对综合航电系统的设计和完善提供重要的理论依据。Aim. To our knowledge, there is no paper in the open literature on such an application. Sections 1 and 2 explain how to apply DSPN; their core is： ＂we offer a set of models, which are presented in Fig. 3, and relevant algorithms to evaluate the integrated avionics bus system, eqs. （11 ） and （12） for calculating respectively busload and delay time are derived, the variations of the busload and delay time with number of messages are also respectively calculated. ＂ Section 3 simulates the model of the FC-AE-1553 Petri nets; the simulation results, given in Figs. 4 and 5, and their analysis show preliminarily that： （1） the delay time increases linearly with increasing number of messages, thus enhancing the real-time data transmission capability of the bus system; （2） the busload also increases with increasing number of messages but increases very slowly after a certain number of messages is reached.

关 键 词：航空电子综合系统 确定与随机PETRI网 FC-AE-1553 性能评价 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]