摘要
为提高星载准绝对式光电编码器的抗油污能力,提出多参考点绝对角位移识别和多读数头数据融合方法。介绍星载准绝对式光电编码器的组成和处理电路设计;提出多参考点绝对角位移的识别方法,防止因油污造成的绝对角位移误识别,并采用多读数头数据融合的方法,判断并消除错误的读数头测量数据;通过角位移曲线和角速度曲线对比实验,验证所提方法的有效性,并使用自准直平行光管和23面体检测精度。实验结果表明:所提方法能够有效的解决圆光栅被污染带引起的角位移错误问题,确保角位移正确可靠;经检验角位移误差最大值为4.6",最小值为-0.6",峰峰值为5.2",均方差为4.3"。满足星载准绝对式光电编码器抗污能力和精度要求,并已成功在工程中应用,效果良好。所提方法对提高星载准绝对式光电编码器抗油污能力,有实用价值。
In order to improve the pollutant resistance of satellite-borne absolute-to-be optical encoder,a method based on multiple references and probes is proposed.First,the composition and circuit design of the satellite-borne absolute-to-be optical encoder was introduced.Second,the data from several probes was combined and references were utilized to differentiate absolute angle shift.This solved the problem which is caused by contaminated circle grating.At last,angular curve and velocity were employed to prove this.The accuracy is tested using autocollimation and a 23-surface polyhedron.The outcome demonstrates its effectiveness.The biggest error is 4.6",the smallest error is-0.6",the pink is 5.2",and the RSME is 4.3".This method could meet the requirements and has been successfully applied in engineering.The proposed method has practical value for improving the oil pollution resistance of spaceborne quasi-absolute optical encoders.
作者
韩庆阳
沈宏海
马天翔
梁超
王志冲
HAN Qingyang;SHEN Honghai;MA Tianxiang;LIANG Chao;WANG Zhichong(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)
出处
《北京航空航天大学学报》
北大核心
2025年第6期2014-2021,共8页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金(52075520)。
关键词
星载
准绝对式光电编码器
抗污能力
多参考点
多读书头
satellite-borne
absolute-to-be optical encoder
pollutant-resistance
multiple reference
multiple probes
