基于时钟精度加权的时钟同步算法  

Clock Synchronization Algorithm Based on Clock Precision Weighting

作　　者：钟程 张磊[3] 凌震[2] Zhong Cheng;Zhang Lei;Ling Zhen(National Key Laboratory of Science and Technology on Aerospace Intelligence Control,Beijing 100854,China;Beijing Aerospace Automatic Control Institute,Beijing 100854,China;China Academy of Launch Vehicle Technology,Beijing 100076,China)

机构地区：[1]宇航智能控制技术国家级重点实验室,北京100854 [2]北京航天自动控制研究所,北京100854 [3]中国运载火箭技术研究院,北京100076

出　　处：《航天控制》2020年第2期69-73,共5页Aerospace Control

摘　　要：在AS6802同步协议的基础上,针对系统中具有不同精度等级时钟的场景,提出一种基于时钟精度加权的时钟同步改进算法。通过仿真验证证明:改进算法可缩减节点间的时钟偏差范围至原算法的10%,提高了系统的同步精度。A fault-tolerant clock synchronization mechanism is specified in the AS6802 protocol for timetriggered Ethernet(TTE).In view of different precision grade clocks that often occur in the actual system.An improved algorithm based on the weighted clock precision clock synchronization is proposed.Simulation results show that the improved algorithm can reduce the clock deviation to 10%of the original algorithm between nodes and improve the synchronization precision of the system.

关 键 词：压缩函数 AS6802协议 时钟精度 同步算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]