Robot joint characterisation and control using a magneto-optical rotary encoder

Fuente: arXiv
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Main Authors: Guo, Yunlong, Canning, John, Chaczko, Zenon, Peng, Gang-Ding
Format: Preprint
Published: 2025
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author Guo, Yunlong
Canning, John
Chaczko, Zenon
Peng, Gang-Ding
author_facet Guo, Yunlong
Canning, John
Chaczko, Zenon
Peng, Gang-Ding
contents A robust and compact magneto-optical rotary encoder for the characterisation of robotic rotary joints is demonstrated. The system employs magnetic field-induced optical attenuation in a double-pass configuration using rotating nonuniform magnets around an optical circulator operating in reflection. The encoder tracks continuous 360° rotation with rotation sweep rates from ν = 135 °/s to ν = 370 °/s, and an angular resolution of Δθ = 0.3°. This offers a low-cost and reliable alternative to conventional robot rotation encoders while maintaining competitive performance.
format Preprint
id arxiv_https___arxiv_org_abs_2511_17608
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Robot joint characterisation and control using a magneto-optical rotary encoder
Guo, Yunlong
Canning, John
Chaczko, Zenon
Peng, Gang-Ding
Robotics
Optics
A robust and compact magneto-optical rotary encoder for the characterisation of robotic rotary joints is demonstrated. The system employs magnetic field-induced optical attenuation in a double-pass configuration using rotating nonuniform magnets around an optical circulator operating in reflection. The encoder tracks continuous 360° rotation with rotation sweep rates from ν = 135 °/s to ν = 370 °/s, and an angular resolution of Δθ = 0.3°. This offers a low-cost and reliable alternative to conventional robot rotation encoders while maintaining competitive performance.
title Robot joint characterisation and control using a magneto-optical rotary encoder
topic Robotics
Optics
url https://arxiv.org/abs/2511.17608