Abstract:This paper mainly introduces the metrology,measurement and calibration research work of the step standard template with high step difference and the depth standard template with windrow groove based on the nano-measuring machine(NMM).Those include doing metrology,measurement and calibration of the two templates on the NMM,the calibration comparison of the nano-class depth standard template and depth height standard template when the different sensors are installed on the NMM and"To Realiye the Measuring Met...

Abstract:The FDR(Flight Data Recorder) records some parameters of an aeroengine.Because of jamming,there is noise error in these parameters.The data must be pretreated so that it can be used to monitor the work condition and performance trends of the aeroengines.The pretreating of rotational speed data of high-pressure and low-pressure rotors with dynamic digital filtering technique are studied.The pretreated data are more continuous and smooth.The development trends of the parameters with flight time can be showed ...

Abstract:The traditional signal distortion testing methods being adopted at present can't meet the needs of the development of digital technology.The algorithms discussed in this paper which is based on LabVIEW and PXI bus offers an efficient means for signal distortion test and solve the problem.

Abstract:A novel method generating an aeronautic climb-fall velocity standard signal is invented.Double pressure sensors,an analog silicon pressure sensor and a precision digital quartz pressure sensor are introduced.The analog sensor provides the processing control signal.The digital quartz sensor works system standard sensor to guarantee the output velocity accuracy.Two feedback loops are adopted,the analog loop is designed using a traditional PID analog electrical circuit,the numeric loop is completed by a comput...

Abstract:This paper introduces the working principle of the magnetic torquer,deduces the magnetic calculation of the torquer,introduces the means of improving the magnetic material's stability and explains the working principle and means of magnetism temperature compensation.

Abstract:In this paper,the principle and application method that in relation to a kind of dynamic torque remote sensing testing system are described,the calibration principle of the system is presented,and the detail calibration method is introduced.

Abstract:The artificial nuclide big surface source standard which is used for calibration of airborne or carborne gamma-ray spectrometer for gamma-ray radiation environmental monitoring in the nuclear emergency is a new one of metrological guarantee which has been established by Airborne Survey and Remote Sensing Center of Nuclear Industry over ten years.Using the big surface source standard,we may effectively make up the weakness hard to be simulated and computed due to the complicated factor of the angular respons...

Abstract:Based on the analysis of the features of indentation image for Brinell hardness test,the measurement of indentation diameter for Brinell hardness based on the digital image processing is put forward.Using the industrial CCD camera to catch the indentation image of the Brinell hardness,the accurate and automatical measurement of the indentation diameter is realized by the image processing steps of the image segmentation,target area processing,indentation outline fitting and so on.

Abstract:真的存在361°问题吗? 对理论上均匀刻划成361°的度盘,按其在经纬仪中的模拟读数和规定的数据处理方法,实际验算一次后得出结论:不存在361°问题!

Abstract:The measurement method and uncertainty reason of vibration energy flow in wall of pipe are introduced in this paper,and that have been analyzed and evaluated in detail.

Abstract:The voltage is measured according to the standard transfer method in the verification regulation of DC digital voltmeter,and the uncertainty of measurement is evaluated by the uncertainty theory.

Abstract:Based on the general ATS,this paper discusses the achievement method and the key technology of the general-utility of software.Based on the MFC component technology,the design of the component of the general test software for the aircraft power system has been developed,and combining with the GL Studio,the development of the graph control has been accomplished.This paper introduces the method and the steps of development and integration of the general test software with LabWindows/CVI particularly.

Abstract:The design of the DMIS software interface based on MECT is discussed.By the object oriented technology,it could implement the dynamic communication between DMIS and MECT format data,and accomplish automatic measurement under the DMIS program control.It provides an instance according to the DMIS via upgrading the existing coordinate measurement software.It can be used for reference to the DMIS standardization of dimensional measurement.

Abstract:Because the output shaft of the oil pump can't be dismantled at present,there is no any appropriate method to measure and test its power by using the fixture torqe testing system.In the article,the test method of its power is using the fixture torque test system.The article has introduced the work principle of the oil pump,the mechanical structure of the fixture torque sensor,the software and the hardware of the test system and the application domain of the method.

Abstract:The characteristic of model task is high invested,high technological,high hazard,high quality,high requirement.This paper illustrates the necessity of setting up model task quality management system and making further perfectness measuremen equipment affirmance system to ensuer testing data accurate and success rate.It also introduces some measuremen technical parameter of guaranteed model task quality.