时间触发以太网分布式时钟同步一致性研究

Research on distributed agreement of clock synchronization of time-triggered ethernet

在航空航天电子领域,时间触发以太网(time-triggered ethernet,TTE)提供了一种高精度的分布式时钟同步算法以实现全局时钟的精确同步。对时间触发以太网中时钟同步算法进行理论分析,揭示了TTE网络分布式时钟同步算法的一致性原理。理论分析表明,TTE网络中的同步设备能够同时达成全局时钟同步的一致性。此外,对TTE网络时钟同步算法的时钟同步的有效性进行仿真验证。仿真结果表明,TTE网络同步设备执行时钟同步算法能够建立并维持全局时钟同步,而且能获得较高的同步精度。

In the aerospace electronics field,time-triggered ethernet(TTE)provides a very precise distributed clock synchronization algorithm to achieve a precise synchronization of global clock.The distributed clock synchronization algorithm of Time-Triggered Ethernet(TTE)is analyzed in theory and then the agreement principles of the distributed clock synchronization algorithm are revealed in TTE.The theoretical analyses indicate that the synchronization devices can reach the agreement of global clock synchronization at the same time in the TTE networks.Besides,the effectiveness of the clock synchronization algorithm of TTE is verified by the simulations.The results of the simulations indicate that the clock synchronization algorithm of TTE can establish and maintain global clock synchronization,and then achieve a high precision.