High-Precision Digital Rotary Encoder Based on Dot-Matrix Gratings

Yi Cheng Chen, Chi Hung Lee, Ming Jie Chou, Sheng Chih Shen

研究成果: Article同行評審

7 引文 斯高帕斯(Scopus)

摘要

In this paper, a high-precision digital rotary encoder based on dot-matrix gratings (DMGs) is proposed for detecting shaft rotation. The DMG-based encoder is composed of a laser diode, a beam-shaping lens, a code disc, and a detector. In principle, a shaped rectangular beam illuminates a stripe of DMGs on the disc, and from the distribution of diffractive spots on the detector, the position of rotation is then decoded. Compared with a conventional geometric rotary encoder, this diffractive rotary encoder can achieve a fourfold resolution improvement.

原文English
文章編號6801712
期刊IEEE Photonics Journal
10
發行號2
DOIs
出版狀態Published - 2018 4月

All Science Journal Classification (ASJC) codes

  • 原子與分子物理與光學
  • 電氣與電子工程

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