基于空间应用的TTE时钟同步算法研究  

Research on TTE Clock Synchronization Algorithm Based on Space Application

作　　者：徐乾舜 华更新[1] Xu Qianshun;Hua Gengxin(Beijing Institute of Control Engineering,Beijing 100190,China)

机构地区：[1]北京控制工程研究所,北京100190

出　　处：《计算机测量与控制》2018年第7期271-275,281,共6页Computer Measurement &Control

摘　　要：时间触发以太网络(time-triggered ethernet,TTE)作为新型的分布式交换网络,具有强实时、高带宽、高安全性的特点,而TTE时钟同步是TTE网络实现的前提条件,通过分析TTE时间同步过程以及其过程中存在的噪声,总结了影响时间同步精度的因素,建立了时钟噪声模型,并且采用kalman滤波等滤波算法得到了良好效果,最后在滤除噪声影响之后使用两种渐进时钟补偿算法进行时钟补偿,并通过仿真验证了算法的可行性。Time triggered Ethernet as a new distributed switching network has the characteristics of strong real-time,high bandwidth and high security,and TTE clock synchronization is the prerequisite for constructing the TTE network.Analyzing the TTE time synchronization process and the existing noise,summarizes the factors that affect the time synchronization precision,builds a clock noise model,and get a good result using the Kalman filter filtering algorithm.Finally this paper use two progressive compensation algorithm to compensate the clock offset after removing the effect of noise,and the feasibility of the algorithm is verified by simulation.

关 键 词：时间触发以太网 时间同步 KALMAN滤波 渐进补偿 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]