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高频摆镜的多时序闪频激光测试

Multi time sequence flashing laser test for high frequency swing mirror

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摘要

为解决目前摆镜检测系统采样率低,难以满足高频摆镜测量需求的问题,根据等效采样原理,设计了基于高速激光闪频技术的多时序高精度非接触式摆镜检测系统。该系统首先利用激光脉冲控制电路实现多时序的闪频激光照明,在CCD靶面上获得光斑位置图像;然后,根据激光光斑成像位置计算摆镜的摆角,并依照相邻光斑位置之间的时间间隔得到角速度。实验结果表明:检测系统的角度分辨力为0.005°,动态采样时间间隔可以达到百微秒量级,角速度测量误差小于±7%。该系统提高了摆镜测量的采样率,满足了高频摆镜测试的要求。

Abstract

In order to solve the problem of low sampling rate and to meet the requirements of high frequency swing mirror measurement, based on the principle of equivalent sampling, a multi time series high accuracy non-contact swing mirror detection system is designed. First, with the laser pulse control circuit, multi time sequence flashing laser lighting is achieved and the spot position is obtained on the CCD target plane. Then, according to the image of the laser spot position, calculate the mirror swing angle and angular velocity by the time interval between adjacent spot positions. The experimental results show that the angle resolution of the detection system is 0.005°. The time resolution can reach the microsecond order, and the angular velocity measurement error is less than ±7%. The system improves the sampling frequency of swing mirror measuring and meets the requirements of high frequency swing mirror test.

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中图分类号:TN206;TH712

DOI:10.12086/oee.2018.180052

所属栏目:科研论文

收稿日期:2018-01-09

修改稿日期:2018-03-23

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蔡怀宇:天津大学精密仪器与光电子工程学院,天津 300072光电信息技术教育部重点实验室(天津大学),天津 300072
梁志敏:天津大学精密仪器与光电子工程学院,天津 300072光电信息技术教育部重点实验室(天津大学),天津 300072
黄战华:天津大学精密仪器与光电子工程学院,天津 300072光电信息技术教育部重点实验室(天津大学),天津 300072
郎明远:天津大学精密仪器与光电子工程学院,天津 300072光电信息技术教育部重点实验室(天津大学),天津 300072

联系人作者:蔡怀宇(hycai@tju.edu.cn)

备注:蔡怀宇(1965-),女,博士,教授,主要从事光电成像与检测技术、信息光学和图像处理等方面的研究

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引用该论文

Cai Huaiyu,Liang Zhimin,Huang Zhanhua,Lang Mingyuan. Multi time sequence flashing laser test for high frequency swing mirror[J]. Opto-Electronic Engineering, 2018, 45(7): 180052

蔡怀宇,梁志敏,黄战华,郎明远. 高频摆镜的多时序闪频激光测试[J]. 光电工程, 2018, 45(7): 180052

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