Automatic control of moving mirror based on phase detection in FTIR spectrometer
Automatic control of moving mirror based on phase detection in FTIR spectrometer
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DOI：
10.1117/12.819604
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发表时间：
2008-12
影响因子：
3.5
通讯作者：
Aiping Li;Xianze Xu;Zhangrong Chen
中科院分区：
文献类型：
--
作者：
Aiping Li;Xianze Xu;Zhangrong Chen
本文对光谱仪中运动反射镜的均匀运动及其与固定反射镜的对准进行了研究。首先，简要分析了影响均匀运动的因素及产生不对准的原因。然后，提出了一种基于相位检测的运动反射镜运动控制策略。同时，从硬件设计和算法实现两方面对该策略进行了详细的介绍。实验数据和结果表明，所设计的动镜控制系统具有足够的精度和定时性，既能满足红外光谱仪中干涉仪的对准要求，又能满足动镜运动均匀的要求。作为国家“十五”科技计划课题“傅里叶变换红外和激光拉曼光谱仪的研究与开发”项目的关键技术之一，无论在理论还是实践上，都将在精确驱动与定位、快速跟踪与调整、反馈控制等领域产生重要意义。
This paper did a research on the uniform motion of the moving mirror in the spectrometer and the alignment with the fixed mirror. Firstly, a brief analysis is made on the factors that affect the uniform motion and the reasons of the misalignment. And then, a strategy is described to control the movement of the moving mirror that based on phase detection. Meanwhile, a detailed introduction to the strategy is presented from the aspects of the hardware design and algorithm realization. The experimental data and result shows the control system for the moving mirror has sufficient precision and timing to ensure the alignment needed by the interferometer in the FTIR spectrometer and the requirement by the moving mirror of its uniform motion as well. As one of the key techniques in the project of "Research and Development on the Fourier Transform Infrared and Laser Raman Spectrometer", one topic of the National 10th Five-year Program of Science and Technology, it will make a significant meaning in the area of precise driving and positioning, fast tracing and adjustment as well as feedback control, whether in theory or practicality.