IETM 软件数据模型设计

为提高软件类技术信息在交互式电子技术手册(interactive electronic technical manual,IETM)中的显示与交互能力,提出一种针对软件的系统划分及编码方式。使用Schema语言设计了一种IETM软件类数据模型,分析了该数据模型的元素结构及应用方式,并给出了应用实例。该模型在某校园网系统 IETM 中得到了应用,具有一定的实用性。     

交互式3D技术与IETM的集成及应用

为推进装备保障信息化建设,将交互式3D技术用于交互式电子技术手册(interactive electronic technical manual,IETM).通过交叉引用将3D格式的多媒体对象插入IETM,利用ActiveX技术建立基于IETM的3D显示平台,利用应用程序接口直接获取3D对象的子对象信息,使IETM可以对场景内的3D对象进行交互操作,使3D IETM的交互形式得以扩展,使IETM具备了桌面级虚拟训练能力.结果表明:通过3D IETM的应用,使依托IETM组织培训进行装备交互式训练的效率和效果更加突显,能拓展IETM的功能.对IETM集成SCORM标准和xAPI标准,使IETM具备跨平台的互操作性.     

某型导弹系统交互式电子技术手册设计方法

某型导弹综合保障系统,涉及IETM创作平台、数据库和数据显示等子系统。采用AIMSS软件完成IETM系统设计,首先将IETM系统数据的内容进行分解,同时分析所引用的其它数据模块信息,以便建立链接。然后进行数据导入编排等工作,同时进行评审与验证,最后为测试过的IETM产品绑定Run-Time,制作安装程序与使用文档,采用CD、DVD和相关硬件的形式发布给最终用户。实用表明该设计合理可行。     

基于SQL数据库的IETM系统

基于SQL数据库技术的IETM系统,联合式IETM的结构是3层结构的Browser/server,可分解为一个应用服务器和一个或多个数据服务器,与客户端一起构成3层B/S模型.服务器是数据库的载体,每个服务器可以承载一个或多个数据库.其ADO通过访问OLEDB数据提供程序访问数据库.查询定位过程则为:先对系统外部实体进行虚拟URL地址化,然后通过地址的链接完成对系统的交互式操作.     

基于中间件平台的异构数据交换与集成

针对数据共享过程中数据可能来自不同的途径,提出了一种基于中间件技术的统一平台异构数据库数据交换模型。该模型基于驱动映射,当数据从数据库传送到XML文档或从XML文档传送到数据库时,用一个具体模型实现数据交换。其方法是将XML文档表示为由数据对象构成的树,每一个元素类型和对象模式中的对象相对应,即模式和模式之间的映射。文中以基于中间件平台的某应急处理系统异构数据为例,其数据处理速度提高了5～10倍,说明该模型可方便地实现异构数据的交换与集成。     

基于VB和ActiveReports控件的RCM报表系统

基于VB和ActiveReports控件的RCM报表系统,通过从数据库中读取数据,生成报表并显示数据.为读取数据方便,系统定义了RCM实体类、集合类、数据库管理类,形成对象访问结构层次.该报表设计、实现和显示则交给ActiveReports,采用程序控制方法完成.     

基于SVG 的IETM 数据模块热点交互技术

针对目前航天领域存在大量2维图纸,且2维图纸表达形式单一、FLASH不支持安卓平台、3维动画制作效率低下等问题,提出并实现一种基于可缩放矢量图形(scalable vector graphics,SVG)的交互式电子技术手册(interactive electronic technical manual,IETM)数据模块热点交互技术.该技术利用3DVIA Composer,通过在SVG图和3维动画中进行热点设置,实现IETM数据交互,做到了"所见即所得".该技术目前已用于进行航天装备产品介绍及组成原理说明.结果表明:该技术能解决现有2维图纸表达不够直观、生动的问题,提高了IETM的交互性及可操作性,丰富了IETM的展现形式,大大提升培训训练效果.     

基于MVC的IETM版本控制机制

根据某型雷达IETM交互式电子技术手册系统的实际需求,提出一种采用Java、网络、XML和MVC设计模式相结合IETM系统版本控制机制。该IETM系统的版本控制机制分版本更新、访问权限控制和版本跟踪3部分,其采用XML及其相关技术,将不同格式的数据转换成统一的格式进行管理。用户与数据库间只通过XML标准语言进行交互,从而实现现有数据的集成和共享,提高信息利用率。     

面向复杂武器系统的IETM研究

面向复杂武器系统的IETM,首先,根据复杂武器系统的特点和IETM的现状及发展趋势,提出基于Web的网络式、第4级、集成的IETM技术方案,然后阐述系统的3个组成部分:产品资料数据库、专家系统数据库和人机交互界面,最后对系统的实现进行了论述.     

基于任务的战术态势视图中对象的描述与组织

基于任务的战术态势视图TTSP概念模型,由作战实体、环境实体、任务、作战过程和态势等元素组成.其对象表示通过定义选择空间参考模型,建立数据表示模型,定义相应数据编码标准及建立对象的交互标准四个步骤进行.此外,由描述对象的行为、能力、战场态势及战场空间对象组织完成对TTSP中对象管理的规范描述.     

Nitrosation and Nitration of Tetraacetyldibenzylhexaazaisowurtzitane

Tetraacetyldibenzylhitane (TADBIW) was subjected to debenzylation by nitrosating with inorganic materials available commercially to synthesize tetraacetyldinitrosohexaazaisowurtzitane (TADNSIW). TADNSIW was purified, and its structure was determined by FTIR, 1H NMR, MS and element analysis. The debenzylation reaction of TADBIW gave quantitative benzaldehyde as a by-product. This indicates that the reaction produces an imine cation as an intermediate. Hexanitrohexaazaisowurtzitane (HNIW) was prepared from unpurified TADNSIW with the yield over 96.0 % and the purity more than 98.0 %. And the mechanism of the reaction from TADNSIW to HNIW is proposed to be oxidation of nitroso and nitration of acetyl on the molecule of TADNSIW, This reaction system involved is simple, and the reaction can complete within a short time and under mild conditions. The product can be easily to separate and the waste disposed readily.     

A Robust Algorithm for Watermarking 2D Vector Maps with Low Shape-Distortions

The technique of watermarking has been introduced into 2D vector maps for many potential applications such as protecting the copyright of important GIS （geographical information system） data and tracing the data source of military maps. In most previous works, although the validity of the map data could be preserved during the embedding procedure, the shape-distortions of the map elements are usually neglected which would tend to degrade the invisibility of the watermarking schemes. A shape-preserving algorithm for watermarking 2D vector maps is presented in this paper. A 1D distance sequence extracted from the original map is adopted as the cover data instead of 2D coordinates. A watermark bit is represented by changing the distributions of the cover data. The embedding procedure induces lower shape-distortions than in former works. Experimental results indicate better invisibility of the proposed scheme, as well as its robustness to certain attacks such as map simplification, interpolation, additive noise and most geometric transforms.     

Open Rule-setting System Applied to Conceptual Design of Engines

Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.     

Research on Linux Network Device Driver

By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux （kernel version 2.6.11 ） is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development.     

Improvement and Experiment of the Reamer in Vibra Cutter Against Wave Edge of Titanium Sheet Alloy Parts

By analyzing the influencing factors of part quality making of sheet alloy of titanium by vibra cutter, the shape of upper reamer is set as cylinder and wedge-shaped form, and the lower reamer as plain and hemicycle form, and its main structural parameters are defined as well. Then it is validated further that such improved vibra cutter reamer can be used to process curve-edged parts of titanium alloy sheet. The experimental result shows that the titanium alloy sheet parts processed by above equipment have no sharpen angles for convex parts and evident crevasse of concave-edged part. In summary, such improvement can eliminate the free-waved edge and improve the manufacture quality of titanium alloy sheet parts greatly.     

Experimental Study on the Small Flyer Initiating Behavior of Fine-grained Explosives

The initiating behavior of fine-grained explosives by small flyer is studied. The diameter of small flyer in this device is 1 ram. The test results indicate that the granularity of explosives has great effect on its flyer initiating sensitivity.The flyer initiating sensitivity of the fine-grained explosives is higher and the critical initiating energy is lower than that of common explosives. For common explosive, the flyer initiating sensitivity increases as the density is reduced. But for the fine-grained explosive, the test results are exactly opposite.     

Algorithm for Multi-laser-target Tracking Based on Clustering Fusion

Multi-laser-target tracking is an important subject in the field of signal processing of laser warners. A clustering method is applied to the measurement of laser warner, and the space-time fusion for measurements in the same cluster is accomplished. Real-time tracking of multi-laser-target and real-time picking of multi-laser-signal are introduced using data fusion of the measurements. A prototype device of the algorithm is built up. The results of experiments show that the algorithm is very effective.     

Influence of Installing Error on the Surface Shape Precision of the Axial Symmetry Aspheric Workpiece in Lapping

A method to calculate the surface shape error, which is caused by the installing error between the workpiece and the lapping tool in the process of form lapping, is proposed. The mathematical model which the installing translation error influences on the workpiece surface shape error is established. The changing rule of the error is simulated through the calculating example of the paraboloid workpiece. The results indicate that the surface shape error of the workpiece is increasing with the increase of the installing translation error, it is also increasing gradually along the center point of the curve surface to the edge, and the influence is severer to the curve surface with great curvature than that of the small curvature when the translation error is the same.     

Experimental Research on Output Performances of Giant Magnetostrictive Actuator

The paper introduces the performances of magnetostrictive actuators and its applications, discusses the design methods for the structure and internal magnetic circuit of a giant magnetostrictive actuator, and makes tests on the output displacement and force characteristics for an actuator using homemade magnetostrictive material. The experimental result shows that the actuator has satisfactory output precisions and ranges in transient and stable states, and can be used in lowfrequency vibration control system of precise equipment.     

Robust Graded Sliding Mode Tracking Control for Low Speed Spinning Ballistic Missiles

The nonlinear dynamic model of spinning ballistic missiles is established during the first boosting phase of the missile. Based on the conventional backstepping sliding mode control and the assumption of a two time-scale separation of missile dynamics, a graded sliding mode controller is designed with two sub-sliding surfaces which have invariability to external disturbances and parameter perturbations, and a matrix which comprises three first order low pass filters is introduced to prevent ＂explosion of terms＂. Owing to the upper bounds of the uncertainties are difficult to obtain in advance, adaptive laws are introduced to estimate the values of the uncertainties in real-time. Eventually, the numerical simulation results given to show the proposed controller can ensure the steady flight of missiles.