大口径望远镜主镜位置检测与控制  

Large diameter telescope primary mirror position detection and control

作　　者：刘博婷[1,2] 李玉霞[1] 孟浩然[1] 杨晓霞[1] 乔兵[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学,北京101400

出　　处：《传感器与微系统》2016年第5期132-134,共3页Transducer and Microsystem Technologies

基　　金：中国科学院长春光学精密机械与物理研究所三期创新工程资助项目(065X32CN60)

摘　　要：为了保持主镜与镜室的相对位置不变,提高望远镜的成像质量,对主镜位置检测和控制方法进行了研究。主镜位置检测使用了6只高精度LVDT直线位移传感器,能够实时地计算主镜在5个自由度上的位移变化和温度导致的主镜半径变化。在主镜位置检测的基础上,设计了主镜位置的反馈控制方法,采用了PID控制算法对主镜位置进行闭环矫正。对提出的位置检测和控制方法进行了验证实验,实验结果表明:该方法能够对主镜位置进行精确地解算和控制,满足工程实际需要。In order to maintain relative position of main mirror and mirror chamber unchanged, improve image quality of telescope, main mirror position detection and control method is studied. Primary mirror position detection system uses six high precision LVDT straight line displacement sensors,which can calculate displacement change of primary mirror on five degrees of freedom and radius change of major mirror caused by temperature in real-time. On the basis of the primary mirror position detection, feedback control method for primary mirror position is designed, using PID control algorithm for closed-loop correction of primary mirror position. The proposed position detection and control methods is validated, experimental results show that this method can accurately calculate and control the primary mirror position,which can meet actual needs of engineering.

关 键 词：望远镜主镜 位置检测 位置控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]