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      Calibration, Compensation and Accuracy Analysis of Circular Grating Used in Single Gimbal Control Moment Gyroscope

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          Abstract

          The accuracy of the circular grating is the key point for control precision of the single gimbal control moment gyroscope servo system used in civilian micro-agile satellites. Instead of using the multi reading heads to eliminate eccentricity errors, an algorithm compensation method based on a calibration experiment using a single reading head was proposed to realize a low-cost and high accuracy angular position measurement. Moreover, the traditional hardware compensation method using double reading heads was also developed for comparison. Firstly, the single gimbal control moment gyroscope system of satellites was introduced. Then, the errors caused by the installation of the reading head were studied and the mathematic models of these errors were developed. In order to construct the compensation function, a calibration experiment using the autocollimator and 24-sided prism was performed. Comparison of angle error compensation using the algorithm and hardware method was presented, and results showed that the algorithm compensation method proposed by this paper achieved the same accuracy level as the hardware method. Finally, the proposed method was further verified through a control system simulation.

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                Author and article information

                Journal
                Sensors (Basel)
                Sensors (Basel)
                sensors
                Sensors (Basel, Switzerland)
                MDPI
                1424-8220
                06 March 2020
                March 2020
                : 20
                : 5
                : 1458
                Affiliations
                [1 ]Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; yuyuehfut@ 123456163.com (Y.Y.); chenms0911@ 123456aliyun.com (M.-S.C.); xuezhipengss1314@ 123456126.com (Z.-P.X.)
                [2 ]University of Chinese Academy of Sciences, Beijing 100049, China
                [3 ]Chang Guang Satellite Technology Co., LTD, Changchun 130102, China; kongling_bo@ 123456163.com (L.-B.K.); hitwangchaoqun@ 123456163.com (C.-Q.W.)
                Author notes
                [* ]Correspondence: zjdailu@ 123456aliyun.com
                Author information
                https://orcid.org/0000-0003-3480-4739
                Article
                sensors-20-01458
                10.3390/s20051458
                7085521
                32155875
                5e147727-a7a8-4f4d-bc4f-c410a8fc90ae
                © 2020 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 26 December 2019
                : 03 March 2020
                Categories
                Article

                Biomedical engineering
                single gimbal control moment gyroscope,circular grating,error,eccentricity,accuracy compensation

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