High-Precision Digital Rotary Encoder Based on Dot-Matrix Gratings
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 D...
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8170232/ |
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| author | Yi-Cheng Chen Chi-Hung Lee Ming-Jie Chou Sheng-Chih Shen |
| author_facet | Yi-Cheng Chen Chi-Hung Lee Ming-Jie Chou Sheng-Chih Shen |
| author_sort | Yi-Cheng Chen |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-8caebf2b70cc4ab79f17c444d7ce1e5b |
| institution | Matheson Library |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-8caebf2b70cc4ab79f17c444d7ce1e5b2025-07-01T23:40:24ZengIEEEIEEE Photonics Journal1943-06552018-01-0110211210.1109/JPHOT.2017.27814658170232High-Precision Digital Rotary Encoder Based on Dot-Matrix GratingsYi-Cheng Chen0Chi-Hung Lee1Ming-Jie Chou2Sheng-Chih Shen3Micro-Opto-Electro-Mechanical Systems Laboratory, Department of Systems and Naval Mechatronic Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C.Department of Electrical Engineering, Feng Chia University, Taichung, Taiwan, R.O.C.Industrial Technology Research Institute, Tainan, Taiwan, R.O.C.Micro-Opto-Electro-Mechanical Systems Laboratory, Department of Systems and Naval Mechatronic Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C.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.https://ieeexplore.ieee.org/document/8170232/Diffraction gratingsencoderdot-matrix grating |
| spellingShingle | Yi-Cheng Chen Chi-Hung Lee Ming-Jie Chou Sheng-Chih Shen High-Precision Digital Rotary Encoder Based on Dot-Matrix Gratings IEEE Photonics Journal Diffraction gratings encoder dot-matrix grating |
| title | High-Precision Digital Rotary Encoder Based on Dot-Matrix Gratings |
| title_full | High-Precision Digital Rotary Encoder Based on Dot-Matrix Gratings |
| title_fullStr | High-Precision Digital Rotary Encoder Based on Dot-Matrix Gratings |
| title_full_unstemmed | High-Precision Digital Rotary Encoder Based on Dot-Matrix Gratings |
| title_short | High-Precision Digital Rotary Encoder Based on Dot-Matrix Gratings |
| title_sort | high precision digital rotary encoder based on dot matrix gratings |
| topic | Diffraction gratings encoder dot-matrix grating |
| url | https://ieeexplore.ieee.org/document/8170232/ |
| work_keys_str_mv | AT yichengchen highprecisiondigitalrotaryencoderbasedondotmatrixgratings AT chihunglee highprecisiondigitalrotaryencoderbasedondotmatrixgratings AT mingjiechou highprecisiondigitalrotaryencoderbasedondotmatrixgratings AT shengchihshen highprecisiondigitalrotaryencoderbasedondotmatrixgratings |