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ZHANG Yu-lian SONG Shuang-jie (Xi\''an Aeronautical Polytechnic Institue , Xi\''an , China)
2008, 28(4).
Abstract:The function of the calibration in the flight test,the present situation and prime task of the flight test calibration technology,the test calibration type and test calibration technology future development are presented.
WU Yang OUYANG Pu-zhong (Changcheng Institute of Metrology & Measurement , Beijing , China)
2008, 28(4).
Abstract:In this paper,the principle,method used in testing the power supply system are introduced,then the characteristic,current sta- tus about its ATS are summarized,and the development trend of the ATS is given at last.
ZHANG Yu-xiao FAN Shang-chun (Beijing University of Aeronautics , Astronautics , Beijing , China)
2008, 28(4).
Abstract:This paper introduces the current situation of the modern aircraft fuel management system at home and abroad,the composition and basic working principle of civil aircraft fuel systems ; It presents that the development of high-precision sensor is the most direct factor of im- proving the measurement precision of the systems.It also presents that the new sensor and electronic technology are of great importance to improve the accuracy and reliability of the fuel management system.The development trend of the ...
SUN Dong-mei LI Yong-xin (College of Automatic , Nanjing University of Technology , Nanjing , China)
2008, 28(4).
Abstract:Pointing to the high-pressure sensor linearization output result inaccurate phenomenon,the Dufllng nonlinear system is studied. Using sensor output data as the compensator input,and the sensor input data as the compensator output,the compensator is designed based on the nonlinear dynamic Laguerre function.This method by which the nonlinear order of sensor does not need to be known has the strong inhibitory action for the external interference and a definite advantage to time delay.After the sensor dynamic c...
ZHANG Da-zhi WANG Jing-jing CHEN Lu LI Xin-liang HU Chun-yan (Changcheng Institute of Metrology & Measurement , Beijing , China)
2008, 28(4).
Abstract:In this paper,a novel measurement technology for ultra-low frequency vibration using orthngonal homodyne laser intederometer is introduced.By which the displacement of the measured target installed on the vibration platform.The system can calculate the real-time velocity and acceleration accurately,and the target displacement during test can reach one meter.The experiment results demonstrate that the proposed method can realize the real-time absolute calibration for the transducer undergoing the effects of ...
CHEN Song-tao WEI Yan-ting (The Calibration Center of P , a Electronics Group , Nanjing , China)
2008, 28(4).
Abstract:Adopting the statistic method to calibrate the standard uncertainty,a great number of measured data are needed,and their dis- tribution rule must be known.But it is difficult to be done in practice.Using the grey system theory,a new method of solving the standand devia- tion is proposed in this paper.On this account,evaluating the uncertainty,the account of data and the rule of the distribution will be without spe- cial requirement.The better effect has been obtained during practical application.
LIU De-feng ZHOU Wang-min WEI Guang-hu WEI Zhi-wu (Institute of Optical Information Science , Technology , School of Sciences , Northwestern Polytechnical University , Xi\'' an , China)
2008, 28(4).
Abstract:Pointing to the FBG current sensor based on GMM,the influence of temperature on each part of the sensor head and on the whole sensor head are analyzed.The temperature characteristics of the FBG,Fe-Ga GMM rod and the sensor head are tested by experimenL The experi- ment shows that the temperature characteristic of the Fe-Ga GMM rod is linear,but that of the Fe-Ga GMM and the sensor head as a whole is nonlinear.The Fe-Ga GMM rod is more sensitive to temperature than FBG,and the temperature characteristics of ...
LIU Yong-lu QIN Hai-feng TIAN Feng WANG Lei (Changcheng Institute of Metrology & Measurement , Beijing , China)
2008, 28(4).
Abstract:In this paper a new force measuring facility is presented.A piezoelectric actuator ,a force transducer and a electronic beJance are used for the system and the system is controlled with computer.The closed loop experimentation has been carried out using PID control method and the system has reached very high precision.
ZHANG Zhi-li~ LI Xiang-zhou~ CHENG Yue~ (.The Second Artillery Engineering College , Xi\''an , China , .The Second ArfiUery Equipment Academe , Beijing , China)
2008, 28(4).
Abstract:The angular acceleration is an important parameter to describe the work status of rotary device.The general method using pressure or piezoelectricity sensor to measure angular acceleration exist the disadvantage that can be easily influenced by the measured device self-vibra- tion.This paper,based on highly accurate absolute photoelectric-angular encoder,presents the method adopts second-order tracking differentia- tot,and to exactly measure angular acceleration of launch truck' s rotary arm.
ZHU Chuan-huan (The Institute of , CSIC , Wuhan , China)
2008, 28(4).
Abstract:It discusses the method for measuring reflectance level and the principle for calibrating microwave field strength in the quiet zone of microwave anechoic chamber,and analyes the influence of reflectance level at calibrating microwave field strength using the method of standard field.
ZONG Ya-juan (North Heavy Industries Group Metrology Center , Baotou , China)
2008, 28(4).
Abstract:This paper describes how to write the report for measurement standard and fill the application form correctly.And it summeries some problem finding from the process during examining and verifying the report for the measurement standard and the application form of enterprise and institutiom.the purpose is to help the technicians to write the report for measurement standard and to fill the application form correctly.
LI Xin-wu SHENG Xiao-yan ZHANG Xian WANG Li (Changcheng Iastitute of Metrology & L.Measurement , Beijing , China)
2008, 28(4).
Abstract:At present,the effective area of the piston gauge is mostly measured with the initial balance method.This method uses the definite small mass to eliminate the pressure caused by the difference of the liquid(gas)of the two reference plans of the piston gauge.That means the pressure caused by the liquid(gas)column is invariable.But owing to the compressibiliy of the gas,the density of the gas is changing with the change of the pressure.Even though the heigh of the gas column is invariable,but the pressure cau...
WU Yong-sheng XIONG Ting-ting SHEN Yun-fei HUAI Xiang-fang (The No. Research Institute , China Electronics Technology Group Corporation , Shanghai , China)
2008, 28(4).
Abstract:Aeording to the practical experience of evaluation of uncertainty of measurement,the analysis and evaluation of the uncertainty of measurement for the optical fiber integration characteristic test meter have been done.
ZHANG Xue-rui ZHOU Xia-qin (Xi\''an Dong-fenglnstrument Factory , Xi\''an , China)
2008, 28(4).
Abstract:In the course of measurement of the high-precision low resistance,the influence of the contact resistance,resistance of conjuc- five line and the condition of measurement etc,cannot be ignored for the result of the measurement.So the selection of the suitable method of measurement is very imperlant for enhancement of confidence level.This paper particularly introduces the method of indirect measurement using a stable current source and a digital voltmeter.The analysis and evaluation of the uncertainty of me...
SHI Ya-zhen LIU Xiao-dong (China Electronics Technology Group Corporation No. Research Institute , Tianjin , China)
2008, 28(4).
Abstract:This paper summarizes the measuring principle of the large core diameter high numerical aperture optical fiber test system and es- tablishes the test system' s mathematical model.The evaluation of the uncertainty of measurement of this system has been done.
HU Guo-liang TANG Bin (Changcheng Institute of Metrology & Measurement , Beijing , China)
2008, 28(4).
Abstract:This paper discusses the design and realization of mechanics and electronics parts of the portable equipment of load generation and calibration.The unit is not only used on the load measurement but also on the load generation,and it is an effective equipment for the in-site load calibration.
LI Wen-bin (Changcheng Institute of Metrology & Measurement , Beijing , China)
2008, 28(4).
Abstract:The analysis of the professional management mode of the metrology personnal of the defense science and technology industry,in- cluding the main content,prominence trait and imp|ementary outline,is viewed in this paper.
2008, 28(4).
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