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JJG 1195-2023 English PDF

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JJG 1195-2023: Standard Equipment of Ultra-low Frequency &; Micro-g Acceleration by Mathematical Pendulum-vibration Generator Method
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JJG 1195-2023English379 Add to Cart 4 days [Need to translate] Standard Equipment of Ultra-low Frequency &; Micro-g Acceleration by Mathematical Pendulum-vibration Generator Method Valid JJG 1195-2023

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Basic data

Standard ID JJG 1195-2023 (JJG1195-2023)
Description (Translated English) Standard Equipment of Ultra-low Frequency &; Micro-g Acceleration by Mathematical Pendulum-vibration Generator Method
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 18,148
Date of Issue 2023-06-30
Date of Implementation 2023-12-30
Issuing agency(ies) State Administration for Market Regulation

JJG 1195-2023: Standard Equipment of Ultra-low Frequency &; Micro-g Acceleration by Mathematical Pendulum-vibration Generator Method


---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.
National Measurement Verification Regulations of the People's Republic of China Ultra-low frequency micro-acceleration standard table (mathematical pendulum method) Published on 2023-06-30 Implemented on 2023-12-30 Released by the State Administration for Market Regulation Ultra-low frequency micro-acceleration standard platform (Mathematical Pendulum Method) Calibration Procedures Responsible unit. National Inertial Technology Metrology Technical Committee Main drafting unit. China Aviation Industry Corporation Beijing Great Wall Measurement and Testing Technology Research Institute institute Participating in the drafting unit. Beijing Institute of Aerospace Measurement and Testing Technology The National Inertial Technology and Measurement Technical Committee is entrusted with the interpretation of this regulation. The main drafter of this regulation. He Yicai (Beijing Great Wall Measurement and Testing Technology Research Institute of Aviation Industry Corporation of China) Zhu Gang (Beijing Institute of Aerospace Measurement and Testing Technology) Participating drafters. Xing Xinting (Beijing Great Wall Measurement and Testing Technology Research Institute of Aviation Industry Corporation of China) Dai Yilin (Beijing Institute of Aerospace Measurement and Testing Technology) Dong Xueming (Beijing Great Wall Measurement and Testing Technology Research Institute of Aviation Industry Corporation of China)

Table of contents

Introduction(Ⅱ) 1 Scope(1) 2 Cited documents(1) 3 terms(1) 4 Overview(1) 5 Measurement performance requirements (1) 5.1 Mathematical table radius(1) 5.2 Natural frequency of swing table (2) 5.3 Frequency indication error(2) 5.4 Magnetic flux density(2) 5.5 Signal-to-noise ratio(2) 5.6 Stability(2) 5.7 Acceleration harmonic distortion(2) 5.8 Transverse vibration ratio(2) 6 General technical requirements(2) 7 Measuring instrument control(2) 7.1 Verification conditions (2) 7.2 Verification items (3) 7.3 Calibration method (4) 7.4 Processing of verification results (7) 7.5 Calibration cycle(7) Appendix A Working Principle of Mathematical Table Setup (8) Appendix B Calibration Certificate Inner Page Format (10) Appendix C. Format of the inner pages of the verification result notification (12)

Introduction

JJF1002-2010 "Rules for Writing National Metrology Verification Regulations", JJF1001 "General Metrology Terms and Definitions", JJF1059.1-2012 "Evaluation and Expression of Measurement Uncertainty" together form the basis for supporting the formulation of this regulation. Sex Series Documents. The ultra-low frequency micro-acceleration standard table (mathematical pendulum method) uses a single pendulum motion guide rail to perform pendulum vibration at a small angle. Reproduce ultra-low frequency and micro-acceleration motion parameters for dynamic calibration of accelerometers. In order to evaluate ultra-low frequency micro-acceleration standards The measuring instrument characteristics of the quasi-table (mathematical pendulum method) are based on the technical indicators of existing domestic and foreign standard shaking tables, combined with This procedure is prepared based on the measurement characteristics of this standard bench. This regulation is released for the first time. Calibration procedures for ultra-low frequency micro-acceleration standard bench (mathematical pendulum method)

1 Scope

This procedure is applicable to frequency range (0.001~0.1)Hz and acceleration range (5×10-7~1×10-2) m/s2 ultra-low frequency micro-acceleration standard table (mathematical pendulum method) (hereinafter referred to as the mathematical pendulum table) for the first time and subsequent verification Set and inspect during use.

2 cited documents

This regulation cites the following documents. JJG 298-2015 Standard Shaking Table Verification Regulations JJF1156 Vibration impact speed measurement terms and definitions JJF1675-2017 Inertial technical measurement terms and definitions For dated references, only the dated version applies to this regulation; for undated references, only the dated version applies. The latest version (including all modification orders) shall apply to this regulation.

3 terms

The terms defined in JJF1156 and JJF1675-2017 and the following terms apply to this regulation. The pendulum motion is reproduced through the arc guide rail with the plumb surface, and the tangential linear vibration acceleration and gravity of the small pendulum angle motion are used The composite acceleration of the acceleration component realizes the pendulum vibration table for accelerometer measurement and calibration. The vertical distance from the center of the horizontal mounting surface of the mathematical swing table to the center axis of the arc guide rail. The corresponding frequency when the linear vibration acceleration amplitude in the tangential direction of the swing table motion is equal to the gravity acceleration component.

4 Overview

Based on the principle of pendulum motion, the mathematical swing table generates a standard sinusoidal excitation signal of ultra-low frequency micro-acceleration, which affects the accelerometer. Perform dynamic calibration. It consists of a mathematical pendulum vibration mechanical system, a driving power amplifier, a motion control signal source, and a control transmission It consists of sensors and auxiliary equipment. The mathematical swing table uses a large-radius arc guide rail with a plumb bob surface to realize the pendulum motion, and the drive system Using Lorentz force, inverse piezoelectric effect, hydraulic pressure or mechanical structure to generate mechanical vibration, motion control systems usually use Implementation of an analysis system with signal generation and data acquisition functions, as well as sinusoidal vibration control and vibration calibration Function.

5 Measurement performance requirements

5.1 Mathematical table radius The measurement uncertainty of the radius of the mathematical swing table should be no more than 0.5% (k=3).

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