摘要
为了有效地减小星载相机的体积、重量,实现冷备份,同时完成调焦相机电机转动精度和圈数记忆功能,设计了星载双读数多圈绝对式编码器。根据电机转动的精度与计数要求,研制了采用两套绝对式光栅测量系统的机械结构;根据星载相机可靠性的要求,研制了双读数狭缝盘及读数系统;最后,对编码器进行了精度检测,高低温试验和冲击振动试验。实验结果表明:星载双读数多圈绝对式编码器的分辨力为80″、精度<±100″、测量圈数为16圈。同时具有读数系统冷备份功能和电机转动圈数记忆功能,且体积小、精度高、可靠性强,可满足星载相机要求。
In order to minimize volume, lighten the weight of a satellite mounting effectively and satisfy the requirement of cold copy, accomplishing electric motor＇s turn precision and cylinder memory at the same time, the design for satellite mounting dual numerical minitype multi-turn absolute photoelectric encoder is put forward. Based on turn precision and cylinder memory of electric motor, the two sets of absolute grating measuring system are applied to the mechanical structure. Based on the requirement of reliability, a dual numerical reading slit disc and a numerical reading system are developed. Finally, the precision test, the high temperature or low temperature test and the vibration test are implemented on the encoder. The experimental result shows that the satellite mounting dual numerical minitype multi-turn absolute photoelectric encoder can offer its resolution 80＂, precision〈il00＂, and cylinder number 16. The encoder has the function of cold copy in the reading system and electric motor cylinder memory, light weight, high precision and high reliability, which can meet the requirement of satellite mounting.
出处
《光电工程》
CAS
CSCD
北大核心
2013年第11期40-45,共6页
Opto-Electronic Engineering
基金
国家自然科学基金资助项目(61108066)
关键词
星载相机
冷备份
双读数系统
多圈绝对式编码器
satellite mounting
cold copy
dual numerical system
multi-turn absolute encoder
