Strategy to Decrease the Angle Measurement Error Introduced by the Use of Circular Grating in Dynamic Torque Calibration

A circular grating angle encoder is a key component in the dynamic torque calibration system. To improve the accuracy of an angle measurement, in this paper, the source of the angle measurement error of the circular grating is analyzed; an eccentricity error model and an inclination error model are...

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Autores principales:	Yongbin Du, Feng Yuan, Zongze Jiang, Kai Li, Shuiwang Yang, Qingbai Zhang, Yinghui Zhang, Hongliang Zhao, Zhaorui Li, Shunli Wang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dynamic torque calibration circular grating eccentricity error inclination error error compensation Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/b22f4dfae17c40d2af3ca7725766c033
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spelling	oai:doaj.org-article:b22f4dfae17c40d2af3ca7725766c0332021-11-25T18:57:45ZStrategy to Decrease the Angle Measurement Error Introduced by the Use of Circular Grating in Dynamic Torque Calibration10.3390/s212275991424-8220https://doaj.org/article/b22f4dfae17c40d2af3ca7725766c0332021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7599https://doaj.org/toc/1424-8220A circular grating angle encoder is a key component in the dynamic torque calibration system. To improve the accuracy of an angle measurement, in this paper, the source of the angle measurement error of the circular grating is analyzed; an eccentricity error model and an inclination error model are proposed, respectively; further, these two models are combined to establish a total error model. Through the simulation study with the models, the conditions, in which the eccentricity error or inclination error can be ignored, are discussed. The calibration and compensation methods of the angle measurement error are given, and a progressive error compensation function which integrates the first harmonic fitting and the second harmonic fitting is obtained. An experiment is performed to verify the proposed calibration and compensation methods. The peak-to-peak value of the compensated angle measurement error of the single reading head can be reduced by about 93.76%, which approximates to the error of the mean value of the double reading heads. The experimental results show that the error calibration and compensation method based on the proposed error model can effectively compensate the angle measurement error of the circular grating with a single reading head, and obtain a high-precision measurement angle.Yongbin DuFeng YuanZongze JiangKai LiShuiwang YangQingbai ZhangYinghui ZhangHongliang ZhaoZhaorui LiShunli WangMDPI AGarticledynamic torque calibrationcircular gratingeccentricity errorinclination errorerror compensationChemical technologyTP1-1185ENSensors, Vol 21, Iss 7599, p 7599 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dynamic torque calibration circular grating eccentricity error inclination error error compensation Chemical technology TP1-1185
spellingShingle	dynamic torque calibration circular grating eccentricity error inclination error error compensation Chemical technology TP1-1185 Yongbin Du Feng Yuan Zongze Jiang Kai Li Shuiwang Yang Qingbai Zhang Yinghui Zhang Hongliang Zhao Zhaorui Li Shunli Wang Strategy to Decrease the Angle Measurement Error Introduced by the Use of Circular Grating in Dynamic Torque Calibration
description	A circular grating angle encoder is a key component in the dynamic torque calibration system. To improve the accuracy of an angle measurement, in this paper, the source of the angle measurement error of the circular grating is analyzed; an eccentricity error model and an inclination error model are proposed, respectively; further, these two models are combined to establish a total error model. Through the simulation study with the models, the conditions, in which the eccentricity error or inclination error can be ignored, are discussed. The calibration and compensation methods of the angle measurement error are given, and a progressive error compensation function which integrates the first harmonic fitting and the second harmonic fitting is obtained. An experiment is performed to verify the proposed calibration and compensation methods. The peak-to-peak value of the compensated angle measurement error of the single reading head can be reduced by about 93.76%, which approximates to the error of the mean value of the double reading heads. The experimental results show that the error calibration and compensation method based on the proposed error model can effectively compensate the angle measurement error of the circular grating with a single reading head, and obtain a high-precision measurement angle.
format	article
author	Yongbin Du Feng Yuan Zongze Jiang Kai Li Shuiwang Yang Qingbai Zhang Yinghui Zhang Hongliang Zhao Zhaorui Li Shunli Wang
author_facet	Yongbin Du Feng Yuan Zongze Jiang Kai Li Shuiwang Yang Qingbai Zhang Yinghui Zhang Hongliang Zhao Zhaorui Li Shunli Wang
author_sort	Yongbin Du
title	Strategy to Decrease the Angle Measurement Error Introduced by the Use of Circular Grating in Dynamic Torque Calibration
title_short	Strategy to Decrease the Angle Measurement Error Introduced by the Use of Circular Grating in Dynamic Torque Calibration
title_full	Strategy to Decrease the Angle Measurement Error Introduced by the Use of Circular Grating in Dynamic Torque Calibration
title_fullStr	Strategy to Decrease the Angle Measurement Error Introduced by the Use of Circular Grating in Dynamic Torque Calibration
title_full_unstemmed	Strategy to Decrease the Angle Measurement Error Introduced by the Use of Circular Grating in Dynamic Torque Calibration
title_sort	strategy to decrease the angle measurement error introduced by the use of circular grating in dynamic torque calibration
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b22f4dfae17c40d2af3ca7725766c033
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Strategy to Decrease the Angle Measurement Error Introduced by the Use of Circular Grating in Dynamic Torque Calibration

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