CAJ | 학술논문

为了减小光电编码器的体积，提高航天级光电编码器的精度，设计了一种小型高精度的航天级光电编码器。首先，编码器采用散装形式，编码器与机构共用一个主轴系，码盘直接安装在机构的主轴上，码盘随机构一起转动，大大提高了整个系统的精度。然后，编码器采用主备一体化设计，一个机械主体，电子学系统冷备份，大大的减小了编码器的体积。最后，编码器数据处理程序集成到主系统FPGA中的一个IP核中，极大的减小了处理电路的尺寸，并提高了电路的可靠性。实验结果表明，本编码器分辨力为2．5″，外形尺寸Φ70×40mm，角度数据最快更新时间为10μs，精度为均方差主σ＝8．68″，备σ＝9．86″，完全满足航天仪器的使用要求。
위료감소광전편마기적체적，제고항천급광전편마기적정도，설계료일충소형고정도적항천급광전편마기。수선，편마기채용산장형식，편마기여궤구공용일개주축계，마반직접안장재궤구적주축상，마반수궤구일기전동，대대제고료정개계통적정도。연후，편마기채용주비일체화설계，일개궤계주체，전자학계통랭비빈，대대적감소료편마기적체적。최후，편마기수거처리정서집성도주계통FPGA중적일개IP핵중，겁대적감소료처리전로적척촌，병제고료전로적가고성。실험결과표명，본편마기분변력위2．5″，외형척촌Φ70×40mm，각도수거최쾌경신시간위10μs，정도위균방차주σ＝8．68″，비σ＝9．86″，완전만족항천의기적사용요구。
A small high-precision spaceborne encoder was designed in order to reduce the volume of the encoder and improve the accuracy of encoder in aerospace grade.First, the encoder is in bulk form, the encoder and mech-anism share the same main shaft system, the code disk is installed directly on the spindle mechanism and rotates to-gether with it, therefore the volume could be reduced and the system accuracy could be improved.Then, using in-tegrated design with compact primary and standby device, a machine, the electronics system is cold backup and the volume of the encoder is greatly reduced.Finally, the encoder data processing program is integrated into the main system of FPGA in an IP core, so the size of processing circuit is greatly reduced, and the reliability of the circuit is improved.The experimental results show that the encoder resolution is 2.5", external dimension is Φ70 × 40mm, the angle data fastest update time is 10 μs, the primary device precision mean square deviation is equiva-lent to 8.68", and the standby’s is 9.86", which can satisfy the requirements of space equipment completely.