基于游标插补细分的光电编码器研制

摘要

为了实现编码器的高精度及小型化，研究了编码器的编码方式及机械结构[1]。介绍了游标插补细分的原理，对比传统编码器的编码方式，基于游标插补细分的码盘仅需三圈，即可实现更高的分辨率。试验结果表明，设计的小型游标编码器实现了18位的分辨率、20″的精度，并且编码器的体积达到Φ44mm*18mm。%In order to achieve high precision encoder and miniaturization,encoder encoding and mechani-cal structures are researched.At first,the principle of vernier interpolation subdivision is introduced.Com-pared to traditional encoders coding,nious-based interpolation subdivision code disc can achieve higher r-esolution with three times code channels.Experimental results show that,the smal nious-encoder can ac-hieve 18-bit resolution,20″precision with the volume ofΦ44mm*18mm.