全系统网络延迟分析方法

Analytical Method for Overall Time Delay of System

针对飞行仿真系统实时性要求高的特点,构建了以以太网、实时反射内存网及现场总线技术等多种技术为主的飞行仿真系统分布式网络结构。分析了影响系统延迟的因素及其改进的方法,提出并建立了以太网、实时反射内存网及现场总线技术的延迟计算的数学模型,并提出了一种综合估算全系统时间延迟的方法。这些方法在相关的产品研发中得以运用并取得很好的实时性效果。

Aiming at the high request for time reliability of the flight simulation system,the distributed net for the flight simulation system was constructed,adopting the ether net technology,the SCRAMnet technology,the CAN technology,etc.The factors were analyzes which affected the system time delay,and the ameliorative methods,and it also constructed the mathematic models to calculate the time delay of the ether net,the SCRAMNet and the CAN.A model was put forward to calculate the overall time delay of the system.By using these models,the time reliability problem in flight simulator was solved.