铷原子频标数字温控电路的设计

Design of a Digital Temperature Control Circuit for Rubidium Atomic Frequency Standard

为了实现铷原子频标数字化、小型化、低功耗的需求,采用单片机、模数转换器设计出一种基于PID控制算法的铷频标数字温控系统,介绍了PID控制算法的基本原理和参数的工程整定法.实验结果表明:该数字温控系统与传统模拟温控系统相比,控温精度相当,功耗与体积均有所减小.该数字温控电路可满足小型化铷原子频标工作的需求.

A digital temperature control system based on single chip processor, ADC and PID control algorithm was developed for a miniaturized digital rubidium atomic frequency standard （MRAFS） with low power consumption. The basic theory underlying the PID control algorithm and the strategies for tuning the operational parameters were discussed. The experimental results showed that the digital system developed had low power consumption and smaller volume relative to the traditional analog temperature control system, and similar accuracy of temperature control. The digital temperature control system developed could meet the operational requirement of MRAFS.