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Volume 9
Issue 16
10.3390/app9163415
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Article

A New Method of Angle Measurement Error Analysis of Rotary Encoders

by
Hua-Kun Jia
,
Lian-Dong Yu
*,
Hui-Ning Zhao
and
Yi-Zhou Jiang
School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei 230009, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(16), 3415; https://doi.org/10.3390/app9163415
Submission received: 15 July 2019 / Revised: 9 August 2019 / Accepted: 14 August 2019 / Published: 19 August 2019
(This article belongs to the Section Mechanical Engineering)
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Abstract

In this article, a method of error source analysis and detection to improve the angle measurement accuracy of rotary encoders in precision measuring instruments is proposed. The angle measurement error caused by the installation eccentricity of the grating disk and the radial error motion of the rotating shaft is analyzed, and the error model is built. The method of measuring the radial error motion is introduced, and the visual system and image processing technology is proposed to detect the eccentricity. The verification experiment by the use of an autocollimator and a polygon is carried out. The residual error after comparison within ±6″ accounts for 9% of the angle measurement error. The proposed error model is verified, and the angle measurement error can be predicted if the installation eccentricity and radial error motion are known.
Keywords: angle measurement error; eccentricity; radial error motion; image processing; rotary encoder; instrument angle measurement error; eccentricity; radial error motion; image processing; rotary encoder; instrument

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MDPI and ACS Style

Jia, H.-K.; Yu, L.-D.; Zhao, H.-N.; Jiang, Y.-Z. A New Method of Angle Measurement Error Analysis of Rotary Encoders. Appl. Sci. 2019, 9, 3415. https://doi.org/10.3390/app9163415

AMA Style

Jia H-K, Yu L-D, Zhao H-N, Jiang Y-Z. A New Method of Angle Measurement Error Analysis of Rotary Encoders. Applied Sciences. 2019; 9(16):3415. https://doi.org/10.3390/app9163415

Chicago/Turabian Style

Jia, Hua-Kun, Lian-Dong Yu, Hui-Ning Zhao, and Yi-Zhou Jiang. 2019. "A New Method of Angle Measurement Error Analysis of Rotary Encoders" Applied Sciences 9, no. 16: 3415. https://doi.org/10.3390/app9163415

APA Style

Jia, H.-K., Yu, L.-D., Zhao, H.-N., & Jiang, Y.-Z. (2019). A New Method of Angle Measurement Error Analysis of Rotary Encoders. Applied Sciences, 9(16), 3415. https://doi.org/10.3390/app9163415

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