NVST偏振观测系统的运动控制实现  

The Movement and Control Realization of NVST Polarization Observation System

作　　者：覃瑛 彭建国 张涛[1] 侯俊峰[3] 顾伯忠[4] 许骏[1] Qin Ying;Peng Jianguo;Zhang Tao;Hou Junfeng;Gu Bozhong;Xu Jun(Yunnan Observatories.Chinese Academy of Sciences.Kunming 650011.China;University of Chinese Academy of Sciences.Beijing 100049.China;National Astronomical Observatories.Chinese Academy of Sciences.Beijing 100101.China;Nanjing Institute of Astronomical Optics&Technology.National Astronomical Observatories.Chinese Academy of Sciences.Nanjing 210042.China)

机构地区：[1]中国科学院云南天文台,云南昆明650011 [2]中国科学院大学,北京100049 [3]中国科学院国家天文台,北京100101 [4]中国科学院国家天文台南京天文光学技术研究所,江苏南京210042

出　　处：《天文研究与技术》2018年第3期315-322,共8页Astronomical Research & Technology

基　　金：国家自然科学基金(11373044;11473067)资助

摘　　要：中国科学院云南天文台1 m新真空太阳望远镜(New Vacuum Solar Telescope,NVST)是我国在太阳物理和空间科学对太阳进行光学和近红外观测的主力设备,主要科学目标是高精度、高时空分辨率的太阳磁场测量。1 m新真空太阳望远镜采用机械扫描偏振观测方式,由于光学系统的结构特性导致望远镜在跟踪太阳的过程中不可避免地引入了随时间变化的偏振效应,因此在进行偏振观测时需要进行系统定标,整个系统由定标单元、分析单元和探测器组成,其间涉及的多个运动部件均有复杂精密的运动要求。针对偏振定标过程和偏振观测过程中各光学器件的运动需求,给出了定标单元和分析单元的控制要求,实现了不同观测模式下各部件的运动要求。基于TCP/IP协议的远程控制方案,集成了采用串口通讯的各商用驱动控制器,开发了一套在.NET架构下的定标单元控制软件和相应的用户界面,并预留了观测控制系统接口。性能测试表明,系统符合观测要求,现已投入使用,为后续的偏振观测奠定了基础。The new Vacuum Solar Telescope(NVST)is one of the most important solar observing systems,one of its main scientific goal includes high precision and high temporal resolution measurement of the solar magnetic field.NVST polarization analysis system use a mechanical-scanning based polarization observation mode,and due to the structural characteristics of its optical system,NVST inevitably introduces a time-varying biasing effect during the tracking of the sun.Therefore,for polarization observations,system calibration is required.The whole system consists of a calibration unit,an analysis unit and a detector.A plurality of moving parts involved in the process have complex and precise movement requirements.This paper is aimed at the motion requirements of each optical component during polarization calibration process and polarization observation,provides the control requirements of the calibration unit and the analysis unit,and satisfies the movement requirements of the components in different observation modes.Based on TCP/IP protocol remote control program,integrated with serial communication of the commodity drive controller,the software is developed under.NET architecture with calibration control program as well as corresponding user interface,and reserved OCS interfaces are prepared.System performance tests show that,the system satisfies practical observational requirements,and is now deployed into practical use,which lays the foundation for the subsequent polarization observation.

关 键 词：偏振观测 定标单元 控制方案 远程控制 

分 类 号：P111.33[天文地球—天文学] TP311.5[自动化与计算机技术—计算机软件与理论]