基于FC网络的航空电子系统时间管理

Time Management of Avionic System based on FC Network

随着电子工业的飞速发展,航空电子系统已逐步由传统的分立式、联合式架构发展到现在的综合模块化架构,网络总线由传统的ARINC429、RS422、GJB289A等总线发展到FC光纤总线。保证航空电子系统网络时间准确有效并正确同步给各个设备/模块变得越来越重要,将直接影响飞行器的传感器数据融合和作战效能。为尽可能使网络时间准确有效,并使整个航空电子系统设备/模块之间的时间误差可控,在ASAAC标准基础上,提出了一种典型的基于FC网络的航空电子系统时间管理方案,包括时间获取、同步、分发等过程,并在直升机上得到成功应用。

With the rapid development of the electronics industry,the avionics system has gradually evolved from the traditional discrete and joint architecture to the current integrated modular architecture.The network bus has been developed from the traditional ARINC429,RS422,GJB289A and other bus to the FC fiber bus.Ensuring that the avionics network time is accurate and effective and correctly synchronized to each device/module becomes more and more important,which will directly affect the aircraft's sensor data fusion and combat effectiveness.In order to make the network time as accurate and effective as possible,and to control the time error between the entire avionics system equipment/module,a typical FC network-based avionics system time management scheme was proposed based on the ASAAC standard,including time acquisition,synchronization,distribution,etc.,and successful application on helicopter.