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LIU Xing-hua , CAO Yun-feng , LIU Xin-hua
2004(6):1-3.
Abstract:The definition and system of computer vision, including software and hardware, are introduced.The application of computer vision on unmanned helicopter is summaried. The vision navigation to the landing of fixed-wing UAV is introduced and some analyse are given.
WANG Yu-zhou , JIN Sheng-zhen , SONG Qian
2004(6):4-6,24.
Abstract:The origin and properties of CCD's self-noise are classified and analyzed. The CCD calibration and correction methods and their implementation on Space Solar Telescope are presented. The system configuration and software flow of data processing system,calibrated by the CCD and realized by the image correction are introduced.
HE Hong-wen , HU Chang-hua , ZHANG Wei , HE Hua-feng
2004(6):7-9.
Abstract:The mathematic model of accelerometer with neural network which has the characteristic of self-learning, self-adapting, nonlinear transformation is established and is used to calibrate the static coefficients of the accelerometer. It is proved that the calibrated values are exactly enough to compensate the accelerometer's output.
2004(6):10-11.
Abstract:It is difficult to deal with the two incompatible factors such as high precision and extensive range at the intelligent instruments cored by SCM. There are different functions between input and output at each partition. For it is so hard to compute the exponential functions at the SCM that the writer would divide the output into several partitions, and a math model about polynomial revise in the different partitions combining polynomial revise theory with minimum two-multiplication simulation method is designed. Based on this, the effective measure of increasing the revised data precision is introduced.
DONG Xue-ming , ZHANG Zhi-min+ , LONG Zu-hong , CHENG Ruo-fei , LIANG Yun-zhu
2004(6):12-14,42.
Abstract:It is different from the methods of calibrating frequency and periodicity in the high-speed,high-precision measuring frequency of CPLD.The measurement of angular speed fluctuant rate not only eliminates the error in generic method of calibrating frequency, but also has the characteristic of high-integration,high-speed and high-reliability.
KANG Yong-quan , SHI Zhong-ke , ZHU Hong-yu
2004(6):15-17,20.
Abstract:To solve the problems of data transmit speed, real-time and anti-jamming in ARINC429 bus data communication system, a new ARINC429 bus data communication system based on the DSP technique is designed. This paper discusses the structure and the operating principle of the system in details, and also introduces the software and hardware design. The application shows that this system is characterized with high speed of data transition, good character of real-time and strong ability of anti-jamming.
CHEN Jing , CAI Wei-yong , XIE Yue
2004(6):18-20.
Abstract:In this paper, a new nondestructive test sensor for magnetic sheet properties and its test principle are introduced. Meanwhile, the design fundamental of this sensor is discussed and the typical design data and the simulation results are given.
2004(6):21-24.
Abstract:The static characteristic of Arbitrary Waveform Generator(AWG) is presented and a precise evaluation method of the AWG is introduced. Through a group of experiments, all of the static characteristics are gained. And some problems in calibration of AWG are discussed. The method in this paper is reliable, precise and stable, can be applied to evaluate the static characteristics of AWG.
2004(6):25-27,34.
Abstract:To improve the navigation accuracy of laser strapdown inertial navigation system(LSINS), the model parameters of inertial instrument must be tested. In this paper a kind of parameter test method of using the double axes speed turntable with temperature control box is designed, and the parameters in various environment temperatures are calibrated. Because of temperature compensation the navigation error of LSINS is reduced effectively. As shown by the experiment results, this test method is more accurate and applicable to the medium accuracy LSINS.
2004(6):28-30,45.
Abstract:The working principle of universal tool microscope is discussed in this paper. A technique of division of scale pulse for optical prating transducer measuring system and a method of division of scale pulse between grating space by A/D are put forward. The calculating expressions of the scale pulse equivalent and the error analysis are given by mean of 8 bits A/D converter and 8 intervals in grating space.The experiments indicate that this method of division of scale pulse is valuable to practical use.
CAO Jin-ye , LU Jing-chao , GUO Kun , LIANG Li-jun
2004(6):31-34.
Abstract:A project of semi-physical simulation for flight control system is brought forward. This simulation system is based on embeded real time operation system VxWorks,the Simulink model of helicopter is downloaded into PC104 by use of RTW toolbox,in this way, the efficiency and reliability of the semi-physical simulation are improved.The Board Support Package (BSP) for VxWorks is designed to support the embedded computer PC104, and besides, the code generation process is researched, then some key techniques in realization of this project are resolved.
2004(6):35-39.
Abstract:对某火控雷达天线测控系统的整体组成进行了介绍,对其中的数据需求进行了分析;在此基础上对系统的数据库结构进行了设计,并用关系数据库系统Microsoft SQL Server7.0对其后台数据库进行了实现;最后用VB的ActiveX数据对象(ADO)对其前台的数据存储和查询功能进行了实现。
2004(6):40-42.
Abstract:The box parts for the regular patterns and the sizes of machining errors caused by the original errors of various boring modes are analyzed.Effective measures are suggested to eliminate such factors to improve the boring accuracy.
2004(6):43-45.
Abstract:The base job of accreditation laboratories which should be done well is decribed.The further improvement is suggested after that.
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