分布式综合化航空电子网络拓扑优化技术

Research on Distributtied Integrated Avionics Electronic Network Topology Optimization Technology

针对分布式综合化(DIMA)架构下实时动态消息流和网络资源能力,优化航空数据和通信网络(AD-CN)拓扑问题,提出一种基于业务拓扑、网络拓扑以及延迟、线缆约束下的多目标网络拓扑优化算法。该算法能够基于驻留任务的信号、逻辑连接、物理连接关系,在资源约束下优化机载网络拓扑。算法通过组合优化方法计算折中全局最优解集(Pareto最优)。对于大规模机载网络架构优化,为了减少计算规模和提高计算时间,又提出一种预计算路径算法。算法通过类A320机载网络拓扑场景和类A380机载网络拓扑场景进行验证。结果表明,相比手动功能映射和网络拓扑优化设计,优化效率能提高10%~30%。

As for the problems of real-time dynamic information flow and network resources ability in the frame of DIMA, optimization of avionic data and communication network topology, an algorithm based on business topology, network toplogy and multi-objective network toplogy constrained by delay cables. This algorithm can optimize air-borne network topology in resource constraint condition, based on resident task signal, logic connection and physical connection. It can also compute the optimal solution set (Pareto). For large-scale air-borne network frame optimization, another precomputation route algorithm is proposed to reduce computing scale and raise computing time. It is tested by A320 and A380 network topology scenes. Compared by manual function mapping, network topology optimization design can improve 10 %~30 % optimization efficiency.