分布式加速器控制系统时间同步系统的研究

Implementation of time synchronization in distributed control system of large accelerators

现代大型加速器控制系统大都采用分布式控制系统,系统使用网络交换各类数据。各种控制动作及数据获取要求各智能控制器的CPU基于时间进行调度,因此时标系统在分布式控制系统中具有极其重要的作用。本文论述了采用软件实现的时间同步系统及其所采用的时间协议和原理以及达到的精度等。

Nowadays the distributed control system is used in most of large accelerator control systems. The system exchanges various kinds of data on the network. Since the control operation and data access require the CPUs to be regulated based on time, a time system is very important for the distributed control system. This paper describes the time protocol and its principle used in the time synchronization system, and introduces how to use software to build the system and to test its precision.