摘要
航空电子统一网络(UAN)是第四代先进综合式航空电子体系结构的关键技术。为了研究可扩展一致性接口(SCI)协议在 UAN 中应用的可行性及优化航空电子统一网络的设计,建立了 OPNET 网络仿真环境下的 SCI 节点模型,并重点分析了网络带宽分配协议的进程模型。在 SCI 节点模型的基础上给出了 UAN 的网络层级仿真模型。通过仿真实验,研究了 SCI 网络实时性的影响因素及影响机理。结果表明,SCI 协议满足 UAN 的技术要求,该模型与基于排队论的数学模型结果一致,可用于 UAN 网络性能的优化设计及性能评价。
Unified Avionics Network （UAN） is a key technology of the fourth generation advanced and integrative avionics architecture. To investigate the feasibility of using Scalable Coherent Interface （SCI） in UAN and optimize the design of UAN, SCI node model is established in OPNET simulation environment, with an emphasis on the process model of bandwidth allocation protocol. The network level model of UAN is given based on SCI node model. At last, a set of simulation experiments are designed to find the possible influence on real-time performance of SCI network, and the influence mechanism is also analyzed. According to the simulation result, SCI protocol can satisfy the technical requirements of UAN, and the results from the established model are consistent with the results from mathematical model of queuing theory. Therefore, the model in this paper can be used to optimize and evaluate the performance of UAN.
出处
《机电一体化》
2008年第12期32-36,共5页
Mechatronics
基金
航空科学基金资助项目(编号:20060553008)
关键词
航空电子统一网络
可扩展一致性接口
节点模型
网络仿真
实时性
unified avionics network
scalable coherent interface
node model
network simulation
real-time performance
