Abstract:This paper introduces the calibration method of the transmission & haze meter.The uncertainty of measurement of the calibration results is also evaluated.

Abstract:The generation of the super continuum in Ti:Sapphire femtosecond laser is one of the most important advancements in the femtosecond laser technology.In this paper,the principle,structure,advantage and disadvantage of some main Ti:Sapphire femtosecond lasers with super broadband spectra are introduced respectively.Some ideas about its trend are given in the end.

Abstract:The analog control,digital control and analog/digital control which are usually used for high precise temperature control system are compared in this paper.The purpose is to find a control method which is not only to meet the demand of the thermostatic apparatus used for calibration but also is convenient to be used.

Abstract:This paper presents a multifunctional harmonic monitoring controller.This instrument,based on DSP chip TMS320C6713 for the software and hardware designs,takes sample using quasisynchronous algorithm.The instrument has the function that jumps into a wave filter or not on the scene condition of the contaminated harmonic,and alarms on the monitor for motion object,and it has a wonderful value for reality applies.

Abstract:A design of inductance displacement transducer measuring circuit system is introduced.The AD698 is used as the core of the signal conditioning circuit.It converts the raw output signal of the probe transformer to a scaled DC signal.Integrated with the series of other circuit modules,it can complete the measurement of the probe displacement.The calibration experimental results shows the high precision and large linearity measuring range of this system.

Abstract:The corresponding relation between Vickers hardness and Leeb hardness is investigated in this paper,and the method of least square estimation is used to regress the equation between them.Furthermore,the lower part of the hardness values of the conversion table is extended.

Abstract:In this paper,DC 100A current standard based on advanced electronic component and the accurate current measurement is introduced.The standard decreases the current temperature drift and power consume by the design of ZERO-FLUK,and improves the system control precision and stability by using the high resolution D/A converter.

Abstract:描述了一种快速地检测飞机航姿系统全套及部件200多个信号的航姿综合检查仪.该检查仪采用斩波放大及逆变技术实现了微弱磁信号采集的数字化处理,系统航向、姿态检测精度从原模拟式检测设备的1°提高到现在的0.1°,与原模拟式检查仪相比,维护效率提高了5倍以上.应用小波去噪抗干扰技术,滤除交流电源产生的噪声,从而大大降低系统的漏检率和误警率,整套系统性能及可靠性大大增强.

Abstract:Theory of sinusoidal pressure produced by the resonance of the liquid in hydraulic pipe excited by piezoelectric ceramics is presented.Sinusoidal pressure with big amplitude and small distortion produced when the resonance occurred.Compared with other sinusoidal pressure generators,in high frequency,the amplitude of sinusoidal pressure produced by this device is the biggest.Furthermore,the pressure source is excited by a different way in this device.

Abstract:The laser vibration measuring technique can be used to directly measure the water particle vibration velocity caused by the sound field,then the amplitude and phase of acoustic pressure are derived from the measurement.Thereby,the plural sensitivity of the hydrophones can be accurately calibrated.Using this technique,we establish a calibration facility for plural sensitivity of hydrophones within the frequency range from 10kHz to 100kHz.This article introduces the calibration principle,method and every part...

Abstract:This paper intrdouces how to measure the vibration of the rigid rotor by using digital laser vibrometer,and analyzes the calculation method of the amplitude and angle of the dynamic unbalance.

Abstract:The uncertainty of analysis and detection of helium are evaluated according to JJF1135-2005 Evaluation of Uncertainty in Chemical Analysis Measurement.The different parts of uncertainty are analized.The base mathematical model of measurement is confirmed,the combined relative standard uncertainty and the expanded uncertainty of measurement result are calculated.

Abstract:The functional requirements of precision test of the universal aerial fire control system instrument are analyzed.The design methods of the universal hardware based on the PC104 bus and the universal software based on the test model of precision test instrument of the universal aerial fire control system are introduced.At last,the main difficulties of technique and resolving methods are analyzed.

Abstract:According to the specialty of the of vehicle body's data measured by 3D coordinate measuring machine,a method of computer graphical analysis is proposed,and the design of the software is introduced.After the use of the software,the analysis time is decreased more than before,the accuracy of the analysis is increased and the quality of the vehicle body get greatly improved.

Abstract:This paper analyzes the present status of the metrological management,metrology standards and metrology persons in regional national defence military enterprise and provides a new management pattern and future conception,also a new idea of metrological management and metrological supervision is given.