空间光学微位移促动器的定位测控研究  

Research on Positioning Measurment and Control of Space Optical Micro-displacement Actuator

作　　者：张雅琳[1] 梁凤超[1] 王淳[1] 何海燕[1] 孙伟健[2] Zhang Yalin;Liang Fengchao;Wang Chun;He Haiyan;Sun Weijian(Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China;China Centre For Resources Satellite Data and Application,Beijing 100094,China)

机构地区：[1]北京空间机电研究所,北京100094 [2]中国资源卫星应用中心,北京100094

出　　处：《计算机测量与控制》2020年第7期121-126,共6页Computer Measurement &Control

摘　　要：为解决大口径空间光学镜面在轨组装技术的高精度定位需求,设计了一种微位移促动器,并对单促动器和多促动器六自由度平台分别进行了定位测控研究;通过建立单促动器的运动学方程、多促动器六自由度平台的运动学方程,解决了微位移促动器的高精度定位问题;搭建了实验硬件系统,编写了软件控制程序,对单促动器分别进行了小步长测试和大步长测试,并对多促动器六自由度平台进行了定位测试;实验结果表明,设计的微位移促动器达到了行程25mm的情况下,定位精度误差小于20nm的指标要求;多促动器六自由度平台的定位精度达到了单向平移重复精度误差小于30nm,角度精度误差小于0.02μrad的设计指标。In order to meet the high-precision positioning requirements of the large aperture space optical mirror-on-orbit assembly technology,a micro-displacement actuator was designed,and the single-actuator and multi-actuator six-degree-offreedom platforms were respectively studied for positioning measurement and control.By establishing the kinematics equation of single actuator and the kinematics equation of multi-actuator six-degree-of-freedom platform,the high-precision positioning of micro-displacement actuators is solved.An experimental hardware system was set up,a software control program was accomplished,a small step test and a large step test were performed on a single actuator,and a positioning test was performed on a multi-actuator six-degree-of-freedom platform.The experimental results show that the designed micro-displacement actuator has reached the requirement of positioning accuracy error less than 20 nm at a stroke of 25 mm.The multi-actuator six-degree-offreedom platform meets the design requirements that the unidirectional translation repeat accuracy error is less than 30 nm and the angular accuracy error is less than 0.02 urad.

关 键 词：微位移促动器 六自由度并联平台 定位 测控 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]