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Volume 23
Issue 4
10.3390/s23041987
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Article

A Method to Improve Mounting Tolerance of Open-Type Optical Linear Encoder

by
Xinji Lu
1,
Artūras Kilikevičius
1,
Fan Yang
2,3,* and
Donatas Gurauskis
1,*
1
Institute of Mechanical Science, Vilnius Gediminas Technical University, LT-03224 Vilnius, Lithuania
2
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
3
University of Chinese Academy of Sciences, Beijing 100049, China
*
Authors to whom correspondence should be addressed.
Sensors 2023, 23(4), 1987; https://doi.org/10.3390/s23041987
Submission received: 15 December 2022 / Revised: 31 January 2023 / Accepted: 7 February 2023 / Published: 10 February 2023
(This article belongs to the Topic Manufacturing Metrology)
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Abstract

Accuracy becomes progressively important in the wake of development in advanced industrial equipment. A key position sensor to such a quest is the optical linear encoder. Occasionally, inappropriate mounting can cause errors greater than the accuracy grade of the optical linear encoder itself, especially for open-type optical linear encoders, where the mounting distance between the reading head and main scale must be accurately controlled. This paper analyzes the diffraction fields of a traditional scanning reticle made by amplitude grating and a newly designed combined grating; the latter shows a more stable phase in mathematical calculation and simulations. The proposed combined gratings are fabricated in a laboratory and assembled into the reading heads. The experimental results indicate that the mounting tolerance between the reading head and the main scale of the optical linear encoder can be improved.
Keywords: open-type optical linear encoder; scanning reticle; gratings open-type optical linear encoder; scanning reticle; gratings

Share and Cite

MDPI and ACS Style

Lu, X.; Kilikevičius, A.; Yang, F.; Gurauskis, D. A Method to Improve Mounting Tolerance of Open-Type Optical Linear Encoder. Sensors 2023, 23, 1987. https://doi.org/10.3390/s23041987

AMA Style

Lu X, Kilikevičius A, Yang F, Gurauskis D. A Method to Improve Mounting Tolerance of Open-Type Optical Linear Encoder. Sensors. 2023; 23(4):1987. https://doi.org/10.3390/s23041987

Chicago/Turabian Style

Lu, Xinji, Artūras Kilikevičius, Fan Yang, and Donatas Gurauskis. 2023. "A Method to Improve Mounting Tolerance of Open-Type Optical Linear Encoder" Sensors 23, no. 4: 1987. https://doi.org/10.3390/s23041987

APA Style

Lu, X., Kilikevičius, A., Yang, F., & Gurauskis, D. (2023). A Method to Improve Mounting Tolerance of Open-Type Optical Linear Encoder. Sensors, 23(4), 1987. https://doi.org/10.3390/s23041987

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