航空电子系统机载网络实时性能评价技术  

Real-time performance evaluation technology of airborne network for avionics system

作　　者：何锋[1] 周璇 赵长啸 李峭[1] 王鹏 熊华钢[1] HE Feng;ZHOU Xuan;ZHAO Changxiao;LI Qiao;WANG Peng;XIONG Huagang(School of Electronic and Information Engineering,Beihang University,Beijing 100083,China;College of Airworthiness,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083 [2]中国民航大学适航学院,天津300300

出　　处：《北京航空航天大学学报》2020年第4期651-665,共15页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金(61301086);装备预研领域基金(61403120404);中国民航大学天津市民用航空器适航与维修重点实验室开放基金(2017SW02)。

摘　　要：机载网络是航空电子系统中实现信息实时可靠传输的手段,其发展程度和能力决定了航空电子系统的总体构型及信息综合效能。不同于一般计算机网络,机载网络更加强调组网的实时性,需要采用苛刻高效的方法实现其实时性能的分析与评价。以交换式网络中消息传输过程为分析对象,研究了消息端到端传输延迟模型,给出了实时性能评价方法在评估悲观性和计算紧性的对比指标;对解析分析、行为仿真和模型检查等典型机载网络实时性评价关键技术进行了梳理和分析,给出了各种实时性能评价方法在计算紧性和效率等方面的差异和实现途径。以简单网络和工业规模网络为研究案例对上述方法进行了验证说明,并对比分析了各种方法在计算紧性的差异,探讨了航空电子系统机载网络实时性能评价技术的发展趋势。Airborne network is the key to realize real-time reliable transmission of information in avionics system. Its development degree and capability determine the overall configuration and comprehensive information efficiency of avionics system. Unlike general computer networks, airborne networks emphasize the real-time ability of airborne network and need strict and efficient methods to analyze and evaluate the real-time performance. Taking the process of message transmission in switched networks as analysis object, the end-to-end delay model is summarized and the comparison indexes of evaluation pessimistic degree and calculation tightness for different real-time evaluation methods are proposed. The typically evaluation solutions for avionics environment such as analytical analysis, behavior simulation and model checking are listed, the differences in calculation tightness and effectiveness of these real-time evaluation methods are compared, and the realization approach is analyzed. Furthermore, these methods are verified and illustrated through two typical networking cases: a simple network and an industrial scale network, and the calculation tightness of different evaluation methods is also compared and analyzed. Finally, the development trend of airborne network real-time performance evaluation technology for avionics system is discussed.

关 键 词：航空电子系统 机载网络 实时性 延迟分析 计算紧性 

分 类 号：V247[航空宇航科学与技术—飞行器设计] TP393[自动化与计算机技术—计算机应用技术]