超小型准绝对式编码器的研制  

Super Miniature Virtual Absolute Encoder and Its Applications

作　　者：杨鹏[1,2] 艾华[1] 刘长顺[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院研究生院,北京100039

出　　处：《光电工程》2008年第12期141-144,共4页Opto-Electronic Engineering

摘　　要：针对编码器日趋小型化的技术要求,本文提出一种全新的编码方式和独特的读数头设计结构,成功研制出了超小型准绝对式编码器。该新型编码器采用准绝对式编码方式,即距离编码与增量式编码进行组合编码,只用两圈码道进行编码,极大减少码道数量,整周设多个绝对参考位置,可迅速获得绝对位置信息。采用单读数头结构和相位补偿技术,缩小结构尺寸,直径Φ25mm,经过电子学细分后可到达16位的分辨力,从而实现高精度编码器小型化。To satisfy the requirement of encoder miniaturization, a fire-new encoding method and inimitable design structure of reading head are proposed to develop super miniature virtual absolute encoder. The new encoder adopted virtual absolute encoding method and single reading head. The new method combined distance-coded method with incremental encoding method and only used two rings in favor of miniaturizing encoder. This new encoder designed many absolute references in the whole disk, which quickly acquired current absolute position of code disk. Due to using single reading head, the technology of phase compensation was adopted to minish the size of structure. It has smaller size （φ25 mm） and lighter weight, and the resolution can achieve 16 bits with processing error analysis and electric subdivision.

关 键 词：准绝对式编码器 距离编码 增量式编码器 读数头 电子学细分 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]