星敏感器CMOS电路板靶面自动装调系统  

Automatic assembly and adjustment system for target surface of CMOS circuit board of star sensor

作　　者：任同群[1,2] 曹润嘏 张国锐[3] 石权 崔璨 孔帅 王晓东[1,2] REN Tongqun;CAO Rungu;ZHANG Guorui;SHI Quan;CUI Can;KONG Shuai;WANG Xiaodong(Dalian University of Technology,State Key Laboratory of High-performance Precision Manufacturing,Dalian 116024,China;Dalian University of Technology,Key Laboratory for Micro/Nano Technology and System of Liaoning Province,Dalian 116024,China;Beijing Institute of Aerospace Control Devices,Beijing 100039,China)

机构地区：[1]大连理工大学高性能精密制造全国重点实验室,辽宁大连116024 [2]大连理工大学微纳米技术及系统辽宁省重点实验室,辽宁大连116024 [3]北京航天控制仪器研究所,北京100039

出　　处：《光学精密工程》2024年第16期2513-2522,共10页Optics and Precision Engineering

基　　金：国防基础科研计划资助(No.JCKY2022203B006)。

摘　　要：CMOS电路板靶面是星敏感器结构中的关键部分,其安装姿态影响离焦距离的准确性,进而影响星敏感器成像性能。因此,靶面的装调是确保星敏感器成像质量的重要环节。当前,靶面装调主要依靠人工装调完成,存在装调精度低、产品一致性差、周期长等问题,导致产品的良品率较低。为此,研制了一台星敏感器CMOS电路板靶面自动装调设备。采取非接触式测量方式,集成测量模组与微动平台完成CMOS靶面与基准面的相对位姿测量,解决由星敏感器特殊结构造成的狭小空间内高精度测量难题。设计调整机构实现零件任意角度翻转,消除测量方向与装配方向不一致造成系统结构布置复杂的影响。最后,对测量系统进行精度分析,采用局部枚举法开发了调整垫片研磨量算法,解决由平面姿态单一已知量反求多垫片研磨量的欠定问题。实验结果表明:该系统可实现靶面自动装调功能,测量系统的重复性为1.6′,满足技术指标要求。The target surface of the CMOS circuit board is a key part of the star sensor structure,and its assembly attitude affects the accuracy of the defocus distance,and then affects the imaging performance of the star sensor.Therefore,the assembly and adjustment of the target surface is an important link to ensure the imaging quality of the star sensor.At present,the assembly and adjustment of the target surface is mainly completed by manual assembly and adjustment,and there are some problems,such as low precision,poor product consistency,long cycle and so on,resulting in low rate of quality products.For this reason,an automatic assembly and adjustment equipment for the target surface of CMOS circuit board of star sensor was developed.The non-contact measurement mode was adopted,and the measurement module and fretting platform were integrated to complete the relative position and attitude measurement between the CMOS target surface and the datum surface,which solved the problem of high precision measurement in the narrow space caused by the special structure of the star sensor.The design adjustment mechanism could flip the parts at any angle and eliminate the influence of the complex layout of the system structure caused by the inconsistency between the measuring direction and the assembly direction.Finally,the accuracy of the measurement system was analyzed,and the algorithm of adjusting gasket grinding amount was developed by using local enumeration method to solve the problem of under-determination of multi-gasket grinding quantity from a single known quantity of plane attitude.The experimental results show that the system can realize the function of automatic assembly and adjustment of the target surface,and measurement repeatability of the system is 0.8′,which meets the technical requirements.

关 键 词：星敏感器 CMOS电路板靶面 自动化装调 精度分析 

分 类 号：TP394.1[自动化与计算机技术—计算机应用技术] TH691.9[自动化与计算机技术—计算机科学与技术]