Abstract:

Abstract:This paper chiefly describes the structure, operational principle of several typical resonant acceleration microsensors and microgyroscopes, and analyzes their application features. It can be shown that the resonant micro inertial sensors have excellent characteristics, spacious application and development prospect.

Abstract:In this paper, bi-spectrum estimation method is adopted. Based on non-Gaussian AR-model, parametric bi-spectrum method is used to extrapolate radar echo signal; then the ISAR imaging has been done. Simulation and real data experiment result show that the method adopted in this paper dramatically improves the ISAR imaging resolution as compared with the traditional FFT method. Furthermore, less calculation is able to meet the needs of real-time or half-real-time ISAR imaging.

Abstract:In the limited energy and distributed multi-sensors tracking system, the system should economize the energy to prolong its existing period. In this paper, we propose a sensor node energy consumption model and a nwe sensor management algorithm which uses the energy consumption and relative entropy as the utility. The simulation indicates that this new algorithm can improve the tracking accuracy, decrease the energy consumption and prolong the system life-time.

Abstract:The conception of the synthetic effectiveness evaluation about the space information network confrontation is defined. The principles and methods used to establish effectiveness evaluation index of the space information network confrontation are presented. A creditable index framework is given, which is the basis of the synthetic effectiveness evaluation about the space information network confrontation.

Abstract:The method of digital filtering by auto-associative neural network (AANN) is studied. The AANN adopts a special structure with abottle-nect layer and has an unit overall gain. The internal relation between the variables can be built after the training of a large amount of noise samples. The quintessence of the information can be extracted through the compression before the bottle-nect layer and the decompression after that. And then the redundant information can be used to restrain the noise during the measurement. The negtive effect of the noise upon the paramenter measurement of the aero-engine can be reduced maximally.

Abstract:研制并开发了用于角度标定的高精密角度分度装置及其测量控制系统,装置采用永磁直流力矩电机驱动精密轴系主轴的运转来带动分度盘的转动,以圆光栅测量系统检测主轴的转动角度,为了实现角度的零误差分度定位控制,转动角度的分度控制采用了闭环自动控制系统。研究分析了圆光栅测量信号处理中信号细分形成的系统非线性误差对装置分度精度的影响,建立了误差修正模型,通过误差补偿,系统在±5°的角度测量范围内分度控制精度达到±0.2″。

Abstract:设计了一种新型、通用的大容量航空蓄电池充电器，阐述了系统的电路方案、控制电路的构成及软件设计，研制成功的样机采用可进行A／D转换的ADμC812芯片，可以实时控制充电电流工作于恒流充电状态和涓流充电状态，样机试验表明了该充电器具有结构简单、效率高、体积小、重量轻等优点。

Abstract:This paper introduces a computer test system of Micro Inertial Measurement Unit(MIMU). The system structure, hardware selection and software design about the test system are described. The key technologies in software design about test with RS232, multi-language programming between VC and Labwindows/CVI, multi-thread, multi-language programming between VC and Matlab are described in detail. The system is common to the MIMU based on high-speed CPU, CPLD and FPGA and can be expanded in researching. With this CADS, the efficiency can be promoted and the period of research and development can be reduced markedly.

Abstract:The purpose, principle and software-hardware designs of the automatic test system for aviation attitude are introduced in this paper. The system, which adopts the embedded in dustrial computer PC104 as its core, combines the performance test with malfunction diagnosis of the aviation attitude system so as to improve th rapid flexible maintenance ability of the air force in practice.

Abstract:The Swsy-A type of two-pressure humidity generator used for the humidity calibration lab and field test is introduced in this paper. Its operation principle is presented. The technical performance, test result and analytical conclusion are given.

Abstract:This paper presents the design of a digital anti-skid break controller. The control algorithm is obtained via discretization of continuous-time slip-velocity controller and pressure-bias-modulated(PBM) type antiskid break controller. The algorithm, implemented with software, thus is easy to tune and modify. As a result of dealing with disturbances, which may be encountered during aircraft's breaking, the digital controller can provide the stable and reliable performance. The results indicate that the digital controller improves the aircraft brake performance effectively and enhances the system robustness.

Abstract:The ground receiver of the microwave radiation scale-field is one of the main equipment for the outscaling of satellite radar.As the whole radar-system requires the very high precision, it is very important for its parameters of real time adjusting for the ground receiver of the system outscaling. A kind of the scheme of self-adjusting for the receiving channel of the ground receiver is designed, the adjusting principle and the adjusting process are setted forth, the design frame is given and the key technology is analysed in this paper.

Abstract:介绍了一个基于液压自然爆膜的压力传感器动态校准系统，研究了标定实验数据的处理方法，分析了该系统标定结果的重复性。试验结果表明该标定系统重复性好，可以满足0～30MPa，0～50kHz压力传感器动态标定的要求。

Abstract:Two calibration methods for the nonlinearity of optical fiber power meters are introduced in this paper. In addition, the uncertainty sources are analyzed and compared.

Abstract:Firstly, the concept and fundament of embedded web server are introduced. Secondly, the hardware and software designs of the embedded server, which is based on ARM CPU and CS8900 net interface chip, are explained in detail. In the end, the application of the embedded web server to the smart network-sensor is briefly described.

Abstract:The Broadcast Memory Real Time Network is a data transmission technology with high efficiency. How to use CIN to design a LabVIEW driver for a kind of BM Network node card is introduced in this article.