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GB/T 47121-2026: Optical gyroscope angle measuring instruments
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Optical gyroscope angle measuring instruments
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Basic data | Standard ID | GB/T 47121-2026 (GB/T47121-2026) | | Description (Translated English) | Optical gyroscope angle measuring instruments | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J42 | | Classification of International Standard | 17.040.30 | | Date of Issue | 2026-01-28 | | Date of Implementation | 2026-08-01 | GB/T 47121-2026: Optical gyroscope angle measuring instruments---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 17.040.30
CCSJ42
National Standards of the People's Republic of China
Optical gyroscope goniometer
Published on 2026-01-28
Implemented on August 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Types and Basic Parameters 2
5.Technical Requirements 3
6.Inspection conditions 5
7.Test methods 6.
8.Marking and Packaging 10
Appendix A (Normative) Environmental Requirements for Goniometer Use 11
References 12
Foreword
This document is in accordance with GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Then draft it.
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Standardization of Measuring Instruments and Gauges (SAC/TC132).
The drafting units involved in this document are. National Institute of Metrology, Zhejiang University, Zhejiang Provincial Institute of Quality Science, and Xi'an Zhongke Huaxin Measurement and Control.
Limited Liability Company, Xi'an Jiaotong University, Shandong Haomai CNC Machine Tool Co., Ltd., Hefei University of Technology, Beijing Jiaotong University, Hangzhou Xihe Optoelectronic Technology Co., Ltd.
Technology Co., Ltd., Zhejiang University Jiaxing Research Institute, Beijing Jingdiao Technology Group Co., Ltd., Chengdu Tool Research Institute Co., Ltd., Beijing Micro-Arc Technology Co., Ltd.
Technology Co., Ltd., Jinan Institute of Metrology and Testing, China Jiliang University.
The main drafters of this document are. Huang Yao, Huang Tengchao, Chen Ting, Xue Zi, Wu Jinjie, Liu Hongzhong, Xu Jintao, Yang Zhijun, Sun Shuanghua, and Shi Yongsheng.
Li Geng, Zhou Bing, Yan Fangqing, Li Chulai, Cheng Dandan, Zhao Huining, Meng Lingchuan, Liang Cui, Zhao Shuai, Zhu Jin, Shi Nianbao, Cao Hui, Yang Yifeng, Li Shuangdong
Xu Gang, He Yixian, Li Xiaozhen, Zhao Jun.
Optical gyroscope goniometer
1 Scope
This document defines the terminology and definitions of optical gyro angle measuring instruments, and specifies the types and basic parameters, technical requirements, inspection conditions, markings, and...
The packaging describes the inspection methods, etc.
This document applies to the design, manufacture, and inspection of optical gyroscope goniometers with accuracy classes 1, 2, and 3.
Note. Accuracy levels are classified according to angular position measurement error, with Level 1 having an angular position measurement error of ±0.2″ and Level 2 having an angular position measurement error of ±1″.
The angular position measurement error for level 3 is within ±5″.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 17163 Basic Terminology for Geometric Measuring Instruments
GB/T 17164 Terminology for Geometric Measuring Instruments - Product Terminology
3 Terms and Definitions
The terms and definitions defined in GB/T 17163 and GB/T 17164, as well as the following terms and definitions, apply to this document.
3.1
Sagnace effect
The optical path difference effect caused by the rotation of the optical path between two coherent light waves propagating in opposite directions along a closed optical path.
[Source. GB/T 45570-2025, 3.1]
3.2
Based on the Sagnac effect, a circular optical path is constructed and the optical path difference between the clockwise and counterclockwise light paths is detected during the rotation process to achieve the cyclic rotation.
An angle measuring instrument for dynamic parameter measurement.
Note 1.Hereinafter referred to as goniometer.
Note 2.Angle measuring instruments are classified into three types according to their functions. static measurement angle measuring instruments, dynamic measurement angle measuring instruments, and hybrid measurement angle measuring instruments.
3.3
The plane containing the optical loop of the goniometer.
Note. The output of an optical gyroscope is at its maximum when there is a certain amount of angular displacement change on this plane.
3.4
Reference condition
The working state of the goniometer when the rotation axis points to the vertical direction and the rotation speed is set to 60°/s.
3.5
zeropositiondrift
With the gyroscope's sensitive surface normal pointing in the vertical direction and the instrument stationary relative to the ground, the angle position measured continuously for 1 hour is relative to the initial value.
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