实时分布系统中自适应的时钟同步算法  

Self-adaptive Clock Synchronization Algorithm in Real-time Distributed System

作　　者：张海辉[1] 杨志义[1] 杨刚[1] 

机构地区：[1]西北工业大学计算机科学与工程系,西安710072

出　　处：《计算机工程》2004年第17期168-170,共3页Computer Engineering

基　　金：国防"十五"预研课题

摘　　要：提出了一种自适应的时钟同步算法,该算法考虑了网络延迟带来的影响,考虑了历史平均更新周期与当前状况,能根据自身时钟偏移程度动态地调整下一次同步周期,保证了时间精度,提高了更新的可靠性。目前已经应用于实时分布卫星测控的原型系统,在实验中证明算法的可行性。This paper presents a self-adaptive clock synchronization algorithm, which considering the effect of network delay and historically average updated period, can dynamically adjust the next period according to the maximum drift rate. This algorithm can guarantee the time precision and enhance the reliability of updates. Now the algorithm has been applied in the real-time distributed satellite monitoring and controlling prototype system. It has been proved to be effective in experiences.

关 键 词：时钟同步 自适应 实时分布系统 

分 类 号：TP338.8[自动化与计算机技术—计算机系统结构]