一种星载计算机自稳定容错时间同步算法  

A Self-Stabilization Fault-Tolerant Time-Synchronization Algorithm for an On-Board Computer

作　　者：冯丹[1] 江耿丰[1] 刘波[1] 衣学慧[1] 刘超伟[1] 

机构地区：[1]北京控制工程研究所,北京100190

出　　处：《空间控制技术与应用》2015年第6期58-62,共5页Aerospace Control and Application

基　　金：总装备部预研资助项目(513200704)

摘　　要：提出一种新的时间同步方法,将软同步和硬同步结合,通过单机间的信息交互完成时间同步.单机之间通过初始化同步建立初始同步状态,然后进入同步保持状态.当单机由于临时故障失去同步后,可通过同步搜索算法自恢复与其他单机的同步.本算法可应用于多机热备份体系结构的星载计算机的时间同步中,用于提高系统的自恢复能力.A new time-synchronization algorithm is presented,which combines software synchronization and hardware synchronization. Time synchronization is achieved via information interchange between two computers. With this algorithm,initial time synchronization is established among different stand-alone computers after initial synchronizing process. And then the systemmaintainsthe synchronized state. If one of the computers falls out of the synchronism due to temporary fault,it can autonomously synchronize with other computers with the algorithm. This algorithm is applicable for the time synchronization of multiple hot redundant on-board computers,and improvesthe self-recovery ability of the system.

关 键 词：自稳定 容错 时间同步 

分 类 号：V446[航空宇航科学与技术—飞行器设计]