Frequency control algorithm of domestic optically pumped small cesium clock based on optimal control theory

doi:10.7498/aps.73.20231866

NTSC-IR > 时间频率基准实验室

	Frequency control algorithm of domestic optically pumped small cesium clock based on optimal control theory
	Song Hui-Jie 1,2; Dong Shao-Wu 1,2,3; Wang Xiang 1,2; Jiang Meng 4,5; Zhang Yu 1,2; Guo Dong 1,2; Zhang Ji-Hai 1,2
	2024-03-20
发表期刊	ACTA PHYSICA SINICA
ISSN	1000-3290
卷号	73 期号:6 页码:11
摘要	Frequency control of atomic clock is a key technology in time keeping operation. At present, the open-loop control algorithm is mainly used for the frequency control of foreign microwave clock, but the working principle and performance of domestic optically pumped small cesium clock (hereinafter referred to as domestic clock) are different from those of foreign atomic clock of the same type, so the algorithm cannot be well adapted to domestic clock. In order to improve the autonomy and security of the national standard time, based on the noise characteristics of domestic clock, in this work, the linear quadratic Gaussian control algorithm is studied in the framework of optimal control theory. This algorithm belongs to closed-loop control algorithm. The performance of domestic clock is studied from the aspects of synchronization time, frequency control accuracy and frequency control stability. Finally, the influence of different control intervals on the performance of domestic clock is analyzed. The results show that with the increase of the constraint matrix W-R in the quadratic loss function, the synchronization time increases, the control accuracy decreases, and the control short-term stability increases. When W-R is the same, with the increase of control interval, the synchronization time increases, the control accuracy decreases, and the control short-term stability increases. When W-R = 1, the synchronization time with control interval of 1 h is 5 h, the control accuracy is 1.83 ns, and the Allan deviation of 1 hour is 1.81x10(-13). When the control interval is 8 h, the synchronization time is 28 h, the control accuracy is 4.48 ns, and the Allan deviation of 1 h is 1.48x10(-13). The medium-term stability and long-term stability of domestic optically pumped small cesium clock are both improved.
关键词	atomic clock state model linear quadratic Gaussian control Kalman filter atomic clock noise
资助者	Western Light Project of Chinese Academy of Sciences ; Western Light Project of Chinese Academy of Sciences ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Natural Science Basic Research Program of Shaanxi Province, China ; Natural Science Basic Research Program of Shaanxi Province, China ; Western Light Project of Chinese Academy of Sciences ; Western Light Project of Chinese Academy of Sciences ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Natural Science Basic Research Program of Shaanxi Province, China ; Natural Science Basic Research Program of Shaanxi Province, China ; Western Light Project of Chinese Academy of Sciences ; Western Light Project of Chinese Academy of Sciences ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Natural Science Basic Research Program of Shaanxi Province, China ; Natural Science Basic Research Program of Shaanxi Province, China ; Western Light Project of Chinese Academy of Sciences ; Western Light Project of Chinese Academy of Sciences ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Natural Science Basic Research Program of Shaanxi Province, China ; Natural Science Basic Research Program of Shaanxi Province, China
DOI	10.7498/aps.73.20231866
关键词[WOS]	TIMESCALES
语种	英语
资助项目	Western Light Project of Chinese Academy of Sciences[XAB2021YN22] ; Open Fund of Beijing Institute of Radio Metrology and Testing[JLJK2021001A002] ; Natural Science Basic Research Program of Shaanxi Province, China[2022JQ-014]
资助者	Western Light Project of Chinese Academy of Sciences ; Western Light Project of Chinese Academy of Sciences ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Natural Science Basic Research Program of Shaanxi Province, China ; Natural Science Basic Research Program of Shaanxi Province, China ; Western Light Project of Chinese Academy of Sciences ; Western Light Project of Chinese Academy of Sciences ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Natural Science Basic Research Program of Shaanxi Province, China ; Natural Science Basic Research Program of Shaanxi Province, China ; Western Light Project of Chinese Academy of Sciences ; Western Light Project of Chinese Academy of Sciences ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Natural Science Basic Research Program of Shaanxi Province, China ; Natural Science Basic Research Program of Shaanxi Province, China ; Western Light Project of Chinese Academy of Sciences ; Western Light Project of Chinese Academy of Sciences ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Open Fund of Beijing Institute of Radio Metrology and Testing ; Natural Science Basic Research Program of Shaanxi Province, China ; Natural Science Basic Research Program of Shaanxi Province, China
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:001195279300001
出版者	CHINESE PHYSICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14734
专题	时间频率基准实验室
通讯作者	Dong Shao-Wu
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 2.Chinese Acad Sci, Key Lab Time Reference & Applicat, Xian 710600, Peoples R China 3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 4.Xian Polytech Univ, Sch Elect & Informat, Xian 710048, Peoples R China 5.Xian Univ Sci & Technol, Sch Mech Engn, Xian 710054, Peoples R China
推荐引用方式 GB/T 7714	Song Hui-Jie,Dong Shao-Wu,Wang Xiang,et al. Frequency control algorithm of domestic optically pumped small cesium clock based on optimal control theory[J]. ACTA PHYSICA SINICA,2024,73(6):11.
APA	Song Hui-Jie.,Dong Shao-Wu.,Wang Xiang.,Jiang Meng.,Zhang Yu.,...&Zhang Ji-Hai.(2024).Frequency control algorithm of domestic optically pumped small cesium clock based on optimal control theory.ACTA PHYSICA SINICA,73(6),11.
MLA	Song Hui-Jie,et al."Frequency control algorithm of domestic optically pumped small cesium clock based on optimal control theory".ACTA PHYSICA SINICA 73.6(2024):11.