基于IEEE1588协议的从时钟设计及其控制研究  

Research on Slave Clock Design and Control Based on IEEE1588 Protocol

作　　者：林永君[1] 李境达 李通[1] 马云龙[1] 

机构地区：[1]华北电力大学控制与计算机工程学院,河北保定071003

出　　处：《电力科学与工程》2014年第9期53-58,共6页Electric Power Science and Engineering

基　　金：中央高校基本科研业务费重点项目(12ZX18);中央高校基本科研业务费面上项目(12MS119)

摘　　要：时钟漂移与传输迟延的不确定性是影响同步精度的主要原因,通过分析IEEE1588协议原理,设计了从时钟结构。实际通信网络存在很多不确定性和延时抖动,固定不变的PI控制器参数往往很难达到满意的对时精度。设计了运用粒子群优化算法对控制器参数进行在线整定的从时钟伺服控制系统,Matlab仿真结果表明,该控制方法具有较高的精度和自适应能力,在网络参数或从时钟发生变化时也能很好地保持同步精度。The uncertainty of clock drift and transmission delay are the main reasons for the synchronous precision.By analyzing the principle of IEEE1588 protocol, this paper designed the structure of the clock. Due to the uncer-tainty and delay jitter of the practical communication network, fixed PI controller parameters is difficult to achievesatisfactory synchronization precision. The slave clock servo control system with controller parameters online settingby using particle swarm optimization algorithm is designed. The simulation results in Matlab show that the proposedcontrol method has higher precision and adaptive ability, and can keep synchronization accuracy when the networkparameters or slave clock frequency changes.

关 键 词：IEEE1588 粒子群算法 PI控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]