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
任同群 1曹润嘏 2张国锐 3石权 2崔璨 3孔帅 2王晓东1
作者信息
- 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;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
- 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
- 折叠
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.
Abstract
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 preci-sion,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 mod-ule and fretting platform were integrated to complete the relative position and attitude measurement be-tween the CMOS target surface and the datum surface,which solved the problem of high precision mea-surement 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Key words
star sensor/target surface of cmos circuit board/automatic installation and adjustment/pre-cision analysis引用本文复制引用
基金项目
国防基础科研计划资助(JCKY2022203B006)
出版年
2024
国家科技期刊平台
NSTL
万方数据