基于变速积分PID控制的标准时间远程复现  

Remote Reproduction of Standard Time Based on Variable Speed Integral PID Control

作　　者：陈德好 杨志强[1] 王玉琢[1] CHEN Dehao;YANG Zhiqiang;WANG Yuzhuo(National Institute of Metrology,Beijing 100029,China)

机构地区：[1]中国计量科学研究院,北京100029

出　　处：《计量科学与技术》2023年第1期10-15,共6页Metrology Science and Technology

基　　金：国家重点研发计划项目(2021YFB3900701)。

摘　　要：随着高精密时间频率在各领域广泛应用,远程时间溯源需求在不断提高。为实现高精度高稳定度远程时间溯源,提出利用光纤时频链路实现高精度时间基准的远程复现,基于变速积分PID控制策略优化了原子钟驯服方法,利用中国计量科学研究院和平里与昌平两院区之间54 km的光纤时频比对链路验证了时间基准复现方案,实验结果表明:超过85%的远程复现时差绝对值优于0.3 ns;远程复现时间稳定度优于6 ps/d;远程复现频率稳定度优于5×10^(-16)/d。With the wide-ranging and deepening application of high-precision time and frequency in various fields, there is a growing demand for remote time traceability. In order to achieve high precision and high stability in long-range time traceability, this paper proposes using optical fiber time-frequency links to realize remote reproduction of high-precision time references. Furthermore, the atomic clock taming method is optimized using a variable speed integral PID control strategy. The time reference recurrence scheme is verified for the link between the National Institute of Metrology Hepingli campus and the Changping campus, spanning 54 km. The experimental results demonstrate that the absolute value of more than 85% of the remote reproduction time deviation is better than 0.3 ns, and the remote reproduction time stability is better than 6 ps/d. The stability of remote reproduction frequency is better than 5×10^(-16)/d.

关 键 词：光纤双向时间传递 远程时间复现 PID控制 原子钟驯服 时间频率 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TB939[自动化与计算机技术—控制科学与工程]