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时间同步是在分布式控制系统架构下实现加速器实时控制的核心技术之一,针对普通晶振的频率偏差造成IEEE1588同步精度低的问题,本文提出了一种频率动态补偿的算法,使加速器实时控制系统能够实现更高的时间同步精度。本文简要介绍了IEEE1588时间同步的基本原理,设计了频率动态补偿算法模块,并搭建测试平台验证了频率动态补偿算法的可行性和实用性,同时根据频率动态补偿后的测试结果分析了同步周期和FORCE10交换机的延迟抖动对时间同步的影响。
Time synchronization is one of the core technologies for realizing real-time accelerator control in a distributed control system architecture. In view of the low accuracy of IEEE1588 caused by the frequency deviation of the ordinary crystal oscillator, a dynamic frequency compensation algorithm is proposed in this paper to make the accelerator real-time control system A higher time synchronization accuracy can be achieved. This paper briefly introduces the basic principle of IEEE1588 time synchronization, designs a frequency dynamic compensation algorithm module, and builds a test platform to verify the feasibility and practicability of the frequency dynamic compensation algorithm. At the same time, according to the test results after frequency dynamic compensation, the synchronization cycle and Effect of Delay Jitter on Time Synchronization in FORCE10 Switch.