QTT高精度位移促动器设计与测试  

Design and test of a precision positioning actuator for QTT

作　　者：项斌斌[1,2] 彭海波[3] 王娜[1,2] 李桐 陈卯蒸[1,2] 许谦[1,2] XIANG BinBin;PENG HaiBo;WANG Na;LI Tong;CHEN MaoZheng;XU Qian(Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China;Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China;Xi’an Micro-electronic Technology Institute, Xi’an 710119, China)

机构地区：[1]中国科学院新疆天文台,乌鲁木齐830011 [2]中国科学院射电天文重点实验室,南京210008 [3]西安微电子技术研究所,西安710119

出　　处：《中国科学：物理学、力学、天文学》2019年第9期37-45,共9页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家重点基础研究发展计划(编号:2015CB857100);国家重点研发计划(编号:2018YFA0404702);中国科学院“西部之光”人才培养引进计划(编号:2017-XBQNXZ-B-021);国家自然科学基金(编号:11803078)资助项目

摘　　要：本文针对110 m口径全向可动射电望远镜的高精度位移促动器进行设计与测试研究.设计了采用步进电机、角度传感器、滚珠丝杠+蜗轮蜗杆的位移促动器方案.针对关键部件进行了详细设计和仿真分析,并对精度、电磁兼容性、环境适应性进行了专门设计.对促动器样机进行了精度测试,结果表明促动器定位精度小于15μm,满足设计精度要求.将促动器样机放置于新疆,进行了超过1年的实地环境适应性测试,在整个测试过程中,促动器样机运行可靠,未出现故障,满足环境适应性要求.In order to achieve the function of active adjustment of primary reflector for the QiTai radio Telescope(QTT), a kind of high precision positioning actuator is designed and some performances of the prototype are tested. The actuator scheme adopts the stepping motor, angle sensor, ball screw and worm gear. The detail design and simulation for the key components are made, and their accuracy, electromagnetic compatibility and environmental adaptation are especially studied. Accuracy tests of prototypes are carried out, and the result indicates that the actuator can meet the requirement of positioning accuracy(15 μm). Moreover, the field test of environmental adaptability of actuator prototype has been carried out in Xinjiang for more than a year, and during the test the prototypes go well without any faults, they can meet the requirement of environmental suitability.

关 键 词：主动反射面 促动器 110m口径全向可动射电望远镜 主动补偿 

分 类 号：P111.44[天文地球—天文学]