基于归并策略的一致性时钟同步算法

Consistent Clock Synchronization Algorithm Based on Merge Strategy

针对分布式飞行仿真的时钟同步问题,在Luca Schenato等人的ATS(Average Time Synchronization)算法的基础上,提出了基于归并策略的一致性时钟同步算法。该算法会在获得系统时钟后,通过邻近原则或者极大极小原则对时钟进行排序组合,以此加快算法的收敛速度;同时通过重定义ATS算法的调节因子σij,使时钟收敛具有自适应性,进一步加快时钟收敛速度,使得该算法更佳适用于飞行仿真控制试验的数据同步过程。实验表明该算法相比于原算法在同步精度、收敛速度、稳定性都得到提升。

Aiming at the clock synchronization problem of distributed flight simulation,based on the ATS(Average Time Synchronization)algorithm of Luca Schenato et al.,a consistent clock synchronization algorithm based on the merging strategy is proposed.After obtaining the system clock,the algorithm sorts and combines the clocks by the principle of proximity or minimax,so as to speed up the convergence of the algorithm.At the same time,the clock convergence is adaptive by rede ning the adjustment factorσij of the ATS algorithm.Further speeding up the clock convergence speed makes the algorithm better suited for the data synchronization process of ight simulation control experiments.Experiments show that the proposed algorithm has improved synchronization accuracy,convergence speed and stability compared with the original algorithm.