Table of Content

15 April 2013, Volume 33 Issue 2

Previous Issue    Next Issue

The Consider and the Approach of Research About CASC Metrology System Construction

HUANG Xun；LIU Yi；LIU Zhong-bai；HE Xu-long

2013, 33(2):  1-6.  doi:10.12060/j.issn.1000-7202.2013.02.01

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

All factor of CASC metrology system construction are introduced.It analyzed and thought the difficulty, look into the future of metrology system which focus on metrology assurance of airspace product is put forward, and then the aerospace enterpnises metrology system construction、airspace product metrology assurance and their development direction are researched.

Research on Redundancy Inertial Guidance Used to Set the Initial Reference Field Calibration Device

CUI Gui-li1；FENG Wei-li1 ；QI Ying-hong2；WANG Kai-lei1；ZHAO Tian-cheng1

2013, 33(2):  7-11.  doi:10.12060/j.issn.1000-7202.2013.02.02

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

Spacecraft need to meet the requirements of long standby, long trajectories and high accurate orbit . Generation of carrier rockets from a single inertial platform navigation way, improved redundant guidance system for multiple sets of Strapdown Inertial Measurement Unit. when rocket in the flight of the heaven, a customary group as the main parts control of rocket flight, the other IMU is a hot backup state involved in the redundancy judgment and takes over the main parts work while the main parts failure . This requires site calibration of the initial angle difference between the Redundant Inertial Measurement Unit before the rocket flight. The use of photoelectric goniometer principle measure the installed initial relative angle difference between Redundant Inertial Measurement Unit . We discussed the calibration methods and measurement equipment development program, calculated the measurement result and the proof of principle. The experiments show that the measuring principle is correct, the test results are accurate and strong maneuverability advantages.

Measurement Technique of Motion Attitude to Vekicle Based on Stereovision and Its Application

WEN Ju-ying；LU Ying；LIANG Ya-jun；ZHANG Qi；CHEN Shi-li

2013, 33(2):  12-15.  doi:10.12060/j.issn.1000-7202.2013.02.03

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

Aiming at the demand of spacecraft ground test, the basic principle of measurement technique based on stereovision is put forward and its system is built. The experiment results is presented that the proposed method had high accurately, and position and posture of the aerocraft are acquired. Accuracy of the navigation and control system was assessed, which ensure the accomplishment of experiment. 

The Application of Laser Radar in Measuring Mesh Antenna

HE Yan；LIU Yong；WANG Dong-wei；XIONG Yong-hu；CHEN Xiao-hui；YIN Qing

2013, 33(2):  16-21.  doi:10.12060/j.issn.1000-7202.2013.02.04

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

The principle and the structure of laser radar were introduced，And the theory of the absolute distance measurement was analyzed especially. With the technical merit ,the laser radar was applied in measuring mesh antenna and the adjusting before antenna′s RF test.The measurement′s result proved the advantage and the adaptability of laser radar.And future of the instrument was expected.

Research on Measurement Technique to Thread of the Large Size

TONG Yan；MA Yu；LI Lin；LIANG Hai-long

2013, 33(2):  22-26.  doi:10.12060/j.issn.1000-7202.2013.02.05

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

According to the difficulty of measurement thread of the large size, researchers carried out researches, such as the application of the laser triangulation method on thread parameters, data-processing algorithm and so on, made a breakthrough in testing the complete contour of thread form, built a device with thread testing and calibrating so that achieving contactless testing for thread and meeting the demands of the large size of thread testing.

The Reaserch of Data Acquisition Method with Real-Time for Angle and Linear Encoder

ZHANG Xin-lei；GAO Yang；LIU Ya-chen；MAI ji

2013, 33(2):  27-33.  doi:10.12060/j.issn.1000-7202.2013.02.06

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

The high accuracy angle and liner encoder are used widely in metolgy and measurement.In the field of servo control for INS Mesuremend Device ,to improve the positioning accuracy and repeatability , rate accuracy and stability , The data acquisition circuit with the high multiple interpolation are applied for positioning and rate control.The data acquisition method in the Real Time System is Reaserched with a multifunctional interpolation counter circuit (IK220).The method acts markedly and effectively on the precision servo control in practice.

The Calculation of Mean Spiral Angle with Conical-shaped Thread

CHEN Zheng；WANG Yu-ping

2013, 33(2):  34-35.  doi:10.12060/j.issn.1000-7202.2013.02.07

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

In the universal tool microscope, there would be tilted at an angle for the column of the central microscope by using image method to measuring the parameters (for example: pitch, half of thread angle etc.) of conical outer thread. And the difference from measuring the common cylindrical outer thread is that the angle called the mean spiral angle is a mean value. The three kinds of calculation formulas with their derivation processes for the mean helix angle are introduced.

Analysis on Repeatability of Measuring the Material with Low Thermal Conductivity By the HOTDISK

XIN Chun-suo；HE Xiao-wa

2013, 33(2):  36-41.  doi:10.12060/j.issn.1000-7202.2013.02.08

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

HOTDISK is widely used in thermal conductivity measurements of engineering materials. A series of homogeneous materials with a low thermal conductivity, such as aerogel powder, insulation blanket and insulation board, are measured with HOTDISK. Measuremet results at different times are compared with each other, compounding cautions and advises based on data varied with time are given.

Research on Involute Linetype of Cam for Buoyancy Compensation of Bell Prover

SUN Feng-ju；LI Qiang

2013, 33(2):  42-45.  doi:10.12060/j.issn.1000-7202.2013.02.09

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

The pressure fluctuation is the key technical indicator to evaluate the accuracy class of bell provers. The design of cam linetype for buoyancy compensation is researched deeply. Concrete method of involute linetype design of cam is advanced. Meanwhile, differences between involute and Archimedes spiral in applicaion to bell prover are analyzed. The crucial design question of bell prover is solved and further research on bell prover of higher accuracy class is guaranteed.

Evaluation of Measurement Uncertainty for the High Sound Intensity Level of a High Sound Intensity Calibration System

YANG Xiao-wei；YAN lei；ZHU Gang；LIU Xin

2013, 33(2):  46-49.  doi:10.12060/j.issn.1000-7202.2013.02.10

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

The creation and measurement method,mathematic model and measurement uncertainty evaluation of high sound intensity level are described. A real example for evaluation uncertainty and its verification result are also showed.

Research on the Flight Dynamics Model for Towed Target System

CHEN Feng

2013, 33(2):  50-53.  doi:10.12060/j.issn.1000-7202.2013.02.11

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

The basic composition of the towed target system is introduced,and the meaning of constructing the flight dynamics model of towed target system is presented.The load analyses of the towing plane,the towed target and the towlines are carried out separately as well as the mathematics model is established and simplified with practical assumption,and the main restrains are analyzed in order to supply the reference for the design and simulation of the towed target system.

Analysis of Test Methods Spacecraft Power Bus Quality

SUN Yi；SONG Shi-min；LIU Min

2013, 33(2):  54-59.  doi:10.12060/j.issn.1000-7202.2013.02.12

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

Power supply and distribution system as a spacecraft subsystem used to generate, store, control, transmit and distribute power, its ground testing is an important part of the spacecraft ground testing. Spacecraft power system is a typical DC distributed power system, the quality and stability of the power bus is closely related to the quality of spacecraft power system. Analyzes the testing methods of spacecraft power bus quality, gives a brief test system design and predicts technology trends.

Design of a Testing System for the New Type Li-ion Power Accumulator Battery

GAN Wu；ZHOU Zhi-xia；ZHANG Hua-feng

2013, 33(2):  60-63.  doi:10.12060/j.issn.1000-7202.2013.02.13

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

The Li-ion power batteries are the key component of EV. A new type Li-ion batteries testing system is expounded in aiming at the characteristics of Li-ion power batteries. The testing system has a high measurement accuracy, safe and protection step and data protection are used, battery matching can be realized automatically. The feasibility of the designing method is proved through the experiments.

Analysis of Calibrating AC Power Supply by Nonlinear Load

MIN Zhong；SUN Yi；YANG Feng；HUANG Bin；LIANG Rui-min

2013, 33(2):  64-66.  doi:10.12060/j.issn.1000-7202.2013.02.14

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

Using linear load for calibrating AC power supply, cannot the supply power factor and nonlinear characteristics cannot be calibrated. Then using nonlinear calibration method is put, and two kinds of nonlinear load design principle are introduced, the diode rectifier nonlinear load model is elaborated.

Linewidth Measurement of the Frequency-stabilized Semiconductor Laser

HAN Shun-li

2013, 33(2):  67-70.  doi:10.12060/j.issn.1000-7202.2013.02.15

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

Semiconductor laser with narrow linewidth and high frequency stability is widely used in precision interference measurements, optical frequency standards, laser communication, laser gyroscope, laser radar, measurements of fundamental physics constants, cold atomic system and so on. The linewidth of the locking laser is an important parameter to evaluate the performance of frequency stabilization. The linewidth measurement scheme of frequency-stabilized semiconductor laser is designed by using AV4036 series spectrum analyzer. The feasibility of the linewidth measurement system is demonstrated by the results.

A High-performance Demodulation Circuit for CPT Frequency Standard

ZHANG Zhen-wei；ZHANG Yi；GU Si-hong

2013, 33(2):  71-74.  doi:10.12060/j.issn.1000-7202.2013.02.16

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

A demodulation circuit that cascading the synchronous integrator and the phase sensitive detector and its application in the Coherent Population Trapping (CPT) atomic frequency standard is introduced. By theoretical calculation and the advanced design system software simulation, it is found that the demodulation circuit has high Q value and a good noise suppression capability and can be applied to CPT atomic frequency standard. By testing of the circuit, it’s confirmed that the circuit can demodulate the light detection signal and provide high-performance differential curve of the Doppler absorption spectrum used to lock the laser frequency and the differential curve of the CPT spectrum used to lock the microwave.

Research on Detection Method for a Video Equipment

LI Hong-quan

2013, 33(2):  75-77.  doi:10.12060/j.issn.1000-7202.2013.02.17

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

After the miniaturization of the video recording is completed，it is transplanted on the UAV which will not cause casualties，applied to the military or high risk areas．In order to avoid the failure of the recording，it needs a lot of comprehensive detection before the flight．The structure and principle of a video equipment are introduced，the environment and method of the ground detection are discussed．The rationality is verified by the comparison of the video image on the ground and in the air.

A Measurement Method for Ultra-low Frequency Modulation Distortion

QIU Bin；YU Qing-hua；DING Feng-hai；XIA Wei；WANG Lin-na

2013, 33(2):  78-80.  doi:10.12060/j.issn.1000-7202.2013.02.18

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

FM nonlinear distortion is an important item in the FM signal measurement. For a high-performance FM signal source, the distortion meter hasn’t directly measure the distortion index. Through analysing the relationship between FM nonlinear distortion and frequency modulation linearity, a method of test ultra-low-frequency modulation distortion is explored and the problem that FM nonlinear distortion can not directly measured by a distortion meter is solved.

Research on a Data Acquisition Card Automatic Calibration System and Its Key Technologie

LIU Tian-shi；LONG Wen；MA Yu

2013, 33(2):  81-84.  doi:10.12060/j.issn.1000-7202.2013.02.19

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

Data acquisition card has become an important means of aerospace equipment, modern weapons and equipment production verification, maintenance and support. An automatic calibration system using the specific data acquisition card was introduced.Design background and realized function was analysed,and the way to resolve the key technology in the calibration process was putted forward, the critical parameter uncertainty of calibration system was analysed.

A High-speed Data Processing Method in the Virtual Test Platform

ZHU Wen-lai；GE Feng；YANG Wei

2013, 33(2):  85-88.  doi:10.12060/j.issn.1000-7202.2013.02.20

Asbtract ( )   PDF (2826KB) ( )  

Related Articles | Metrics

With the purpose of enhancing the processing ability of the single node in the virtual test platform of weapon equipment and solving the problem of mass-data-process and computing complicated models, the reason why the method of high-speed data processing is necessary is analyzed. The common methods of high-speed data processing are listed. The many-core processor, Tile64, is chosen to be the kernel processor of the high-speed data processing card. The application of this designed method in one torpedo virtual test platform is analyzed. Then result of the experiment shows that the high-speed data processing method can remarkably enhance the processing ability of the weapon equipment virtual test platform.