摘要
谐振式光学陀螺需要使用激光器频率锁定技术实现其中一路的频率锁定,探测另一路的谐振频率。在实现激光频率锁定后,陀螺系统会受环境因素的影响在锁频环路中产生超低频漂移,传统的比例积分伺服控制器产生的增益不能够抑制该漂移。本文采用一路为传统的比例积分控制器,另一路为低通滤波器与积分控制器,两路共同作用形成新型伺服控制器进行激光器的频率锁定,提高锁频环路的低频增益,抑制锁频路产生的超低频漂移,通过仿真理论证明其可行性,并进行系统测试,测得锁频环路中的Allan方差值为0.005°/s,且锁频路基本无漂移。
The resonant type optical gyroscope needs to use the laser frequency locking technology to realize the frequency locking of one path and detect the resonant frequency of the other path light. After the laser frequency lock is achieved,the gyroscope system will be affected by environmental factors to generate ultra-low frequency drift in the frequency lock loop,and the gain generated by the traditional proportional integral servo controller cannot be restrained. In this paper,the traditional proportional integral controller is adopted along the way,and the low-pass filter and integral controller are used together to form a new servo controller for laser frequency locking. The system improves the low-frequency gain of the frequency lock loop,inhibits the frequency lock road of ultra-low frequency drift. Its feasibility is proved through simulation theory,and system is tested. Allan variance in the measured frequency lock loop is 0.005 °/s,and the frequency lock road basically has no drift.
作者
孙颖
张成飞
刘文耀
刘俊
唐军
SUN Ying;ZHANG Cheng-fei;LIU Wen-yao;LIU Jun;TANG Jun(Key Laboratory of Instrumentation Science & Dynamic Measurement Ministry of Education,North University of China,Taiyuan 030051,China)
出处
《激光与红外》
CAS
CSCD
北大核心
2019年第2期213-216,共4页
Laser & Infrared
基金
国家自然科学基金项目(No.51635011
No.61571406
No.51727808)
山西省"1331工程"重点学科建设计划经费资助
关键词
谐振式光学陀螺
激光器频率锁定技术
伺服控制器
锁频精度
resonant optical gyroscope
laser frequency locking technique
servo controller
lock frequency accuracy
作者简介
孙颖(1992-),女,硕士,主要从事光电检测与微弱信号处理等方面的研究。E-mail:378275434@qq.com;通讯作者:唐军(1981-),男,博士,教授,主要从事光学传感与量子传感方面的研究。E-mail:tangjun@nuc.edu.cn.
