装备故障远程诊断服务系统的设计

针对一体化作战条件下我军电子对抗装备维护保障的需要，设计了装备故障远程诊断服务系统。根据系统的功能需求，描述了系统的设计模型，探索了解决问题的途径。     

浅谈对同轴电缆长距离传输干线的调试

建设好ＣＡＴＶ系统 ,保证系统良好运行 ,需要搞好设计、选材、安装、调试、维护和管理等 6个环节的工作。其中 ,搞好调试工作是保证ＣＡＴＶ系统良好运行的一个必不可少的步骤。按照设计要求设备选型确定后 ,性能指标能否满足系统设计要求 ,关键在于调试工作。所以调试工作至关重要 ,它是保障和实施系统技术性能的手段。调试工作是保证所用设备工作在最佳状态 ,使设备发挥出应有的性能 ,否则 ,调试不当 ,即使用高质量、高价格的设备也发挥不出应有的作用 ,体现不出其先进性 ,保证不了系统高稳定、高可靠、高质量地运行。建网时需要调试 ,建…     

装备一体化精益保障架构及发展趋势

介绍了装备一体化精益保障的定义和出现背景,以及当前美军保障概况和装备保障未来发展趋势.为打造出一个有中国特色的装备一体化精益保障之路,结合我国国情,分析了精益保障所需的关键技术,构建出我国装备一体化精益保障框架.最后,展望我国装备一体化精益保障的未来发展策略.     

基于VXI总线的机载雷达综合保障一体化系统

机载雷达的生产调试、维护保障是一个相当复杂的过程。对此提出了如何通过基于VXI总线的自动测试系统实现两者的统一，以及如何组建这种系统的硬件与软件构架。实验结果证明，该系统改善了机载雷达的调试环境，缩短了研制周期，工作情况良好。     

武器装备便携式维修辅助系统设计与实现

为了快速检测装备故障,提高装备维修效率,提出了装备便携式维修辅助系统的总体设计思路。运用系统集成技术进行一体化结构设计,构建了装备便携式维修辅助系统,实现了硬件平台多仪器一体化综合集成,并为系统扩展和二次开发预留了接口;采用VITE测试开发环境进行软件平台设计,建立IETM系统实现了装备辅助维修决策。实际应用表明,系统可在战场环境下实现装备的快速修复和远程技术支持,有助于提高部队的维修水平,降低维修保障费用,提高装备完好率。     

装备质量与综合保障技术综述

针对我军装备建设和发展所采用的传统序贯式模式易导致装备不能发挥有效的战斗力、保障费用高、保障困难等问题,提出了装备综合保障的概念,强调了装备综合保障设计应与装备立项、研制、生产及使用全过程同步以提高装备质量.     

一种通用的变频器数据采集系统的设计

为了变频器生产调试和日常维护的需要,设计了一套适应现场复杂环境的数据采集系统。该系统数据采样周期短,数据采集量大,在实际应用中运行稳定可靠,数据记录准确详细,为生产调试和故障分析提供了大量极具价值的数据,成为变频器维护的。     

装备保障中的软件保障探讨

现代武器系统中的软件复杂程序越来越高，维护性要依赖于专业的软件编制人员，而在目前的装备保障，管理体制中，并没有涉及到专门的软件保障内容，本文就建立全军统一体制下的软件保障，维护体制及各层次维护的内容进行探讨，旨在提高装备保障中软件维护的可操作性，进而提高装备的综合效能。     

一种物联网的安全应用——信息装备智慧仓库设计

面对物联网的大势所趋,提出了一种物联网的安全应用：信息装备智慧仓库,为军队、党政或企事业单位的重要信息装备保障提供一种智能化的保障手段。这里以军事信息装备管理为例,从安全信息装备入库管理、出库管理、远程维护支持和安全防护等多个环节阐述了系统功能,并进行了初步设想。以＂装备感知,智慧管理＂为目标,提供一套全新的安全信息装备保障和管理手段。     

基于S7-300PLC的城市污水处理工艺流程控制系统设计

引言对CAST污水处理工艺的研究,以可编程控制器为控制主体,以计算机为系统编程、组态、维护、监控和管理的一体化平台,实现了污水处理生产现场与计算机控制系统的集成,建立一套完整的城市污水处理系统。本文的主要内容是在对污水处理工艺分析基础上,开发西门子S7-300的城市污水处理控制系统,完成STEP7编程和人机界面地开发,并进行模拟仿真和现场调试。     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Nanoimprint Lithography -A Next Generation High Volume Lithography Technique

IntroductionNanoimprint Lithography is a well-acknowl-edged low cost, high resolution, large area pattern-ing process. It includes the most promising methods,high-pressure hot embossing lithography (HEL) [2],UV-cured imprinting (UV-NIL) [3] and micro contactprinting (m-CP, MCP) [4]. Curing of the imprintedstructures is either done by subsequent UV-lightexposure in the case of UV-NIL or by cooling downbelow the glass transition temperature of the ther-moplastic material in case of HEL…     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

Influence of PVK ： NPB hole transporting layer on the characteristics of organic light-emitting devices

A doping system consisting of NPB and PVK is employed as a composite hole transporting layer （CHTL）. By adjusting the component ratio of the doping system, a series of devices with different concentration proportion of PVK ： NPB are constracted. The result shows that doping concentration of NPB enhances the competence of hole transporting ability, and modifies the recombination region of charge as well as affects the surface morphology of doped film. Optimum device with a maximum brightness of 7852 cd/m^2 and a power efficiency of 1.75 lm/W has been obtained by choosing a concentration proportion of PVK ： NPB at 1：3.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.     

Analysis of error performance on Turbo coded FDPIM

Due to variable symbol length of digital pulse interval modulation（DPIM）, it is difficult to analyze the error performances of Turbo coded DPIM. To solve this problem, a fixed-length digital pulse interval modulation（FDPIM） method is provided. The FDPIM modulation structure is introduced. The packet error rates of uncoded FDPIM are analyzed and compared with that of DPIM. Bit error rates of Turbo coded FDPIM are simulated based on three kinds of analytical models under weak turbulence channel. The results show that packet error rate of uncoded FDPIM is inferior to that of uncoded DPIM. However, FDPIM is easy to be implemented and easy to be combined, with Turbo code for soft-decision because of its fixed length. Besides, the introduction of Turbo code in this modulation can decrease the average power about 10 dBm, which means that it can improve the error performance of the system effectively.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.