Abstract:More precision measuring instruments have been developed to meet the globalization and informatization of large-scale industrial manufactures. The current situation and characteristics of large-scale measuring instruments are presented and the methods of calibration and traceability are analyzed in brief. The development trend of traceability for large-scale measuring instruments in the future is also discussed.

Abstract:For the hardness testing at nano-scale, the load-depth curves are obtained by nanoindention testing machine and real 3-demention morphology images of indentation are obtained by atomic force microscopy. The nanoindentation hardness can be achieved by these curves, images and corresponding calculating method. The nanoindentation hardness values are different because of different calculation and measurement methods. Comparing and analyzing these methods, their advantages and disadvantages are presented, and the future tendency of nanoindentation hardness calculation and measurement methods is presented.

Abstract:A new scheme of channelized IFM receiver based on the technology of polyphase filter banks is presented, which has the ability of simultaneous signal processing and fine frequency measurement within wide dynamic range using instantaneous auto-correlation technology. Finally simulation and performance analysis illustrate that the scheme is effective.

Abstract:With regard to the requirement of the second type test eauipment to insulate the fault to SRU,this paper analyses the inside stucture of LRU and presents the concepts of point,rock-bottom test item(RBTI) and rock-bottom test item set(RBTIS).The correlative values are used to express the relationship between point and point,point and SRU,RBTIS and RBTIS.Then this paper puts forward the method of gradual elimination method for UUT with several SRUs.

Abstract:Wavelet transform has the characteristic of time-frequency localization and has been applied widely in electric power systems. Harmonic detection to the electric power systems based on wavelet transform and the measurement of voltage flicker using wavelet transform with synchronous detection are proposed in this paper. It has been proved that this method can be used to detect the voltage flicker exactly by simulation.

Abstract:In this paper, the laser interferometer is used to measure the micro vibration displacement of noload piezoelectric ceramics under sine voltage excitation. Through the amplitud-frequency curve, the vibration displacement and its influence factors of the piezoelectric ceramics are discussed initially.

Abstract:In this paper,an aeronautic tested DC/AC inverter based on a Micro-computer Unit(MCU) is introduced.The DC/DC boost unit is push-pull circuit controlled by UC3846,which can restrain the magnetic bais of the push-pull transformer and enhance the dynamic load response. The SPWM control pulses are produced by P87LPC768.This inverter has the merits of simple structure,small volume,high output-stablity and easy to be adjusted.The test waveform is present at the end of this paper.

Abstract:In order to solve the problems about the airborne pictures is not clear and the data capacity is small and so on, this paper studys the airborne multimedia network sensor realization technology. The airborne multimedia scene recording system overall technology plan is introduced. The issue such as display, memory cell and CPU choice are discussed. The network sensor technology can enhance the ability of the airborne picture and the data gaining and recording. To use the airborne multimedia scene recording system is a high, effective and feasible method to gain airborne picture and data.

Abstract:In order to improve the precision of the linear frequency method of the RCS measurement, starting with the environmental requirement, the method of improving the environment is put forward. It gives some solving method. At last, the isolation error is eliminated by the measuring technique. We can find that the precision of the result is satisfied.

Abstract:利用美国恩泰克公司提供的DP1500数据采集仪及现场动平衡软件,以实例说明了现场动平衡技术在锅炉引风机、排粉风机、电动机、机泵等转动设备不平衡故障排除中的应用,介绍了不平衡故障的识别方法,揭示出该技术在生产中的实用性、先进性和经济性.

Abstract:主要介绍了在JJF1134-2005<专用工作测力机校准规范>(以下简称规范)的不确定度评定过程中出现的若干问题.为了明确各个分量的定义及其公式的使用,我们对某些量的含义作了相应的解释并给出了具体的运算操作,对相关人员有参考价值.

Abstract:Following the development of the embedded system, the requirement of the NAND type flash memory equips is higher and higher. Taking the NAND flash as an example, the application and design of the large capacity NAND Flash in embedded system is presented. A method for eliminating the influence of the bad block appearance when the file is writting is put forward, The algorithm of the management softwore FMM based on the NAND Flash is optimized. And then the efficiency and performance are enhanced.

Abstract:The combinational navigation computer system on the chip is designed by using Virtex-4 FPGA. Using FPGA embedded PowerPC hard core processor, this navigation computer carrys out the navigation operation. Using the integral IP core in the FPGA logic, the control, the bardware acceleration of the interface communication and the part operation are realized. The integral degree of the system is enhanced. Furthermore, this system can be re-configurated. And then on different situations it makes the navigation system meets the requirement for the interface and function.

Abstract:Using the advantage of the open system of VXI bus technology and modular automatic testing system, and combining with the domestic present situation of the unmanned vehicle, the comprehensive test system of virtual instrument is developed. The system possess some good characteristics, including all-purpose, expansibility and standardization. The scheme and implement method of hardware and software under the LabWindows/CVI background of this test instrument is given in this paper.

Abstract:This article joins the standard economy of the military measure, analyzed life cycle of the measure standard of the military,and its expenses constitute. With the foundation of practical example analysis, calculate to the value for measure standard of the military measure.

Abstract:Military metrology is playing a more important role in both the modern wars and the future ones; in particular, information-based joint alliance and cooperation in battles appear to be the representative model of the current wars ; therefore, military metrology has become one of the criteria to judge the battle effectiveness. This paper, while making an analysis on the demands for military metrology on the basis of its function in recent battles, illustrates the relations we face in establishing an information-oriented military metrology.