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JJF 1635-2017 English PDF

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JJF 1635-2017: Calibration Specification for Double Centrifuges
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Basic data

Standard ID JJF 1635-2017 (JJF1635-2017)
Description (Translated English) Calibration Specification for Double Centrifuges
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Word Count Estimation 27,287
Date of Issue 2017-09-26
Date of Implementation 2017-12-26
Regulation (derived from) General Administration of State Quality Inspection Announcement 2017 No. 78
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine

JJF 1635-2017: Calibration Specification for Double Centrifuges

---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.
(Calibration of dual centrifuge) People's Republic of China National Measurement Specifications Double centrifuge calibration specification 2017-09-26 Posted 2017-12-26 Implementation General Administration of Quality Supervision, Inspection and Quarantine released Double centrifuge calibration specification Centrifuges The focal point. National inertial measurement technology committee The main drafting unit. AVIC Beijing Great Wall Measurement and Testing Technology Institute Beijing Aerospace Control Instrument Institute Participated in the drafting unit. AVIC Airborne Missile Institute China Ordnance Institute 203 Institute This Code entrusts the National Technical Committee of inertial measurement technology is responsible for the interpretation The main drafters of this specification. Dong Xueming (AVIC Beijing Great Wall Metrology and Measurement Technology Institute) Xiong Lei (AVIC Beijing Great Wall Measurement and Testing Technology Institute) Liao Jianping (AVIC Beijing Great Wall Metrology and Measurement Technology Institute) Li Dandong (Beijing Aerospace Control Instrument Institute) Participate in the drafters. Zhang Chunjing (Beijing Aerospace Control Instrument Institute) Ho Ocean (AVIC Air-to-Air Missile Institute) Ouyang Heng (China Ordnance Institute 203rd Institute)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terms and definitions (1) 4 Overview (1) 4.1 Principle (1) 4.2 Use (2) 5 Metrology (2) 6 Calibration conditions (3) 6.1 Calibration Environmental Conditions (3) 6.2 Calibration standards and equipment (3) 7 Calibration Items and Calibration Methods (3) 7.1 Calibration Items (3) 7.2 Calibration Method (4) 8 Calibration Results Expression (12) 9 re-school interval (13) Appendix A Calibration Certificate Internal Page Format (14) Appendix B double centrifuge performance evaluation of the main measurement parameters of uncertainty (15) Appendix C main centrifuge static radius and dynamic radius variation of other calibration methods (20)

Introduction

This specification according to JJG1066-2011 "Precision Centrifuge" given the calibration of the technical requirements of the instrument, calibration Projects and calibration methods, combined with the characteristics of double centrifuge prepared. This specification is first released. Double centrifuge calibration specification

1 Scope

This calibration specification specifies the calibration items and calibration methods for dual centrifuges for use in biaxial parallel dual centrifuges calibration.

2 reference documents

This specification cites the following documents. JJG1066 precision centrifuge JJF 1426 Double Centrifuge Normalized Accelerometer Dynamic Characteristics Calibration Specification GJB585A inertial technical terms For dated references, only the dated version applies to this specification; for undated references The latest version (including all amendments) applies to this specification.

3 Terms and definitions

JJG1066-2011, JJF 1426-2013 and GJB585A-1998 as well as the following terms and definitions And symbols apply to this standard. 3.1 biaxial synchronous angular rate relative error relativeerrorofbiaxialsynchronizationanglerate The main centrifuge and reverse rotation from the centrifuge at the same angular rate, the main centrifuge angular rate and the centrifuge angular rate The ratio of the difference to the given angular velocity. 3.2 biaxialparalelism parallelism The main axis of the main centrifuge and the average axis from the centrifuge in the vertical plane angle. 3.3 initial phase angle initialphaseangle Rotate from the zero position of the centrifuge to the angle rotated from the mechanical zero position of the centrifuge. 3.4 initial phase angle error initialphaseangleerror The difference between the initial phase angle given by the dual centrifuge and the initial phase angle obtained from the calibration. 3.5 pitch misalignment angle pitchmisalignmentangle Accelerometer input shaft direction and the main centrifuge centrifugal acceleration direction, the angle between the two in the vertical plane.

4 Overview

4.1 principle Double centrifuge generally consists of the main centrifuge and centrifuge mounted on the main centrifuge turntable or boom, and the main Centrifuge, parallel to the axis of rotation of the centrifuge. By controlling the main centrifuge, from the centrifuge while rotating movement, Can reproduce the different waveforms of line acceleration, angular velocity and other physical quantities. The working principle of double centrifuge shown in Figure 1, O1 is the center of rotation of the main centrifuge, O2 from the centrifuge rotation Center, A from the centrifuge table and O2 distance R2 point. R1-based, rotating center from centrifuge

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