氢原子钟的数字温控设计  

Digital Temperature Control Design of Hydrogen Maser

作　　者：孙长嫔 李锡瑞[1] 刘铁新[1] Sun Changpin;Li Xirui;Liu Tiexin(Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海天文台,上海200030 [2]中国科学院大学,北京100049

出　　处：《天文研究与技术》2023年第2期165-172,共8页Astronomical Research & Technology

基　　金：国家自然科学基金(U1731130)资助.

摘　　要：为了实现氢原子钟的数字温度控制,基于温度检测和控制的基本原理设计一套有两级控温(包括氢钟内炉和外炉)的恒温控制系统,温度控制系统主要由电桥电路、模数转换电路、温度计算和比例积分微分(Proportional-Integral-Derivative,PID)控制系统,脉冲宽度调制(Pulse Width Modulation,PWM)输出电路、加热丝组成。在环境温度21℃到25℃时,实现了数字温控系统0.002℃的温度稳定度,证明了数字电路对氢钟控温的可行性。The purpose of this design is to realize the digital temperature control of the hydrogen maser.Based on the basic principle of temperature detection and control design of a two-stage temperature control system(including the hydrogen maser inside the furnace and the furnace),the temperature control system is mainly composed of bridge circuit,analog-to-digital conversion circuit,temperature calculation and PID(proportional integral differential)control system,PWM(pulse width modulation)output circuit,heating wire.When the ambient temperature fluctuates from 21℃to 25℃,the digital temperature control system achieves the temperature stability of 0.002℃,which proves the feasibility of using the digital board to control the temperature of the hydrogen maser.

关 键 词：数字温控 氢原子钟 PID(比例积分微分)控制 两级控温 

分 类 号：TB939[一般工业技术—计量学]