一种飞行试验FC航电系统的采集网络时延测试方法

A Testing Method of Measuring Time Delay of the Flight TestFC Avionics System Caused by Data Acquiring Network

摘要:

针对飞行试验FC总线测试的特点，文章提出了一种飞行试验FC航电系统的采集网络时延测试方法，在不影响原航电系统信息传输结构与特性的前提下，测试到通信消息从航电子系统端口发出的精准时刻，解决了航电FC采集网络时延测试难题；通过对某试验机的FC采集网络时间延迟测试，提高了飞行试验某航电子系统的试验计算精度，证明了该方法在工程中的有效性。

Abstract:

Airborne fiber is the architecture of the New Generation Avionics System ,Which is gradually replacing the traditional 1553B. FC bus has the characteristics of Ethernet delay. Flight test have special needs for testing avionics AFDX network delay. Without affecting the original transmission structure of avionics system, the exact moment of the communication message is tested which send from avionics system. According to the characteristics of bus test, this paper presents a method for testing avionics FC network delay generated by the collection, to solve the problem of latency test. This method is applied in a aircraft delay test, which improved the experimental accuracy of a avionics system, and demonstrated the effectiveness of this method in engineering.