线导鱼雷模拟器的改进设计

为了满足作战训练需求,对某型线导鱼雷模拟器进行了改进设计.模拟器的设计基于复杂可编程逻辑器件(CPLD)和C++ Builder,采用“工控机+ISA总线+CPLD+上位机软件”结构.在分析了已列装的该型鱼雷模拟器所存在的缺陷基础上,提出了新型模拟器的功能需求以及总体设计方案,根据功能需求,从硬件和软件两方面对模拟器进行设计:硬件部分包括接口电路以及联接ISA总线和接口电路的桥接电路;软件部分采用C++ Builder进行开发,通过Win IO函数实现对底层硬件的驱动.改进后的模拟器在试用过程中取得了良好的效果,其主要技术性能达到了设计要求.     

三峡船闸编排调度的三维仿真支持

三峡船闸编排调度三维仿真系统是三峡船闸编排调度系统的一个子系统.该系统以openGL为开发平台,用3Dmax建立船只、船闸和背景的三维模型,并将其转化为OpenGL下的三维模型的方式以实现其控制和转换,通过OpenGL双缓存技术的swapbuffers()等函数完成其动画,并应用Visual C++6.0的MFC编程构造船闸编排调度三维仿真系统.     

激光脉冲编码发生器上位机软件实现

文中在讨论了激光脉冲编码发生器的系统构架、编码样式的基础上,提出一种软硬相结合的实现多种编码样式激光脉冲的方法,利用C++ Builder在Windows环境下实现了多样式激光脉冲编码发生器的软件控制,通过硬件测试结果证明该软件是行之有效的.     

调压开关弹性联轴器扭矩自动测试系统的设计

针对弹性联轴器扭矩测试的需要,采用研华PCL-818L数据采集卡建立了一套计算机扭矩自动测试系统.该系统的硬件由含有PCL-818L数据采集卡的测控计算机、高速直流伺服电机电枢电流模块、弹性联轴器扭矩模块、温度和励磁电流故障监视模块、及相应I/O、A/D、D/A等组成,软件系统包括测试、数据操作和打印等.同时介绍了所采用的C++ Builder 5.0工具,在编程环境下硬件中断和端口操作的实现.     

基于Labwin/CVI与C++ Builder的虚拟仪器设计

本虚拟仪器设计采用C Builder对Labwin／CVIDLL的动态链接，隐式连接用DLL的，lib实现，显式连接用C 的LoadlibraryO实现，传递数据双方声明全局变量共享，或在C Builder中声明并通过函数形式参数传递给Labwin／CVI，以调用Labwin／CVI的开发为例：Labwin／CVI在.h文件声明输出函数，在．c文件定义输出函数；C Builder毒调用模块在．h文件中声明调用函数，在．cpp文件中调用面板显示函数和采集数据。     

基于MATLAB与C#的火炮CAD系统开发和优化设计

MATLAB和C#语言都能把各自的源程序编译为. NET程序集,并支持对. NET程序集的调用,藉此可实现MATLAB和C#语言混合编程,弥补单一语言功能不足的缺点.在火炮CAD软件的开发中,用MATLAB语言编写火炮CAD模型计算程序并使用Builder for . NET工具编译为. NET程序集,然后利用C#语言编写软件界面,利用树形结构组织火炮的内弹道、炮口制退器和制退机等功能模块,各个模块相应调用由MATLAB生成的. NET程序集实现其功能,使用多线程预加载技术对程序进行优化以提高运行速度.     

破片参数测量系统的USB接口设计

为了实现破片参数测量系统中上、下位机之间的USB接口通信,文中提出了一种基于PDI USBD12芯片的USB接口开发方法。该方法利用KEIL C进行固件程序开发、利用WinDriver进行驱动程序开发、利用C++Builder进行应用程序开发。实践证明这种开发方法大大降低了开发难度,缩短了开发周期。该方法对于其他USB接口的开发具有较高的参考价值。     

基于知识规则的2.4 m 风洞控制开车参数自动生成专家系统

针对2.4 m风洞控制开车参数往往取决于人工经验、难以准确给定控制参数的问题,开发一种基于知识规则的控制开车参数自动生成专家系统.首先简要介绍了2.4 m风洞核心控制系统和专家系统的基本架构,然后详细介绍了开车参数自动生成专家系统的设计方法.采用C++Builder语言开发了一套软件,实现了2.4 m风动主要控制执行机构预置位置参数的自动生成.实际的应用结果表明:该系统具有适应能力强、覆盖范围广、可靠性高等特点.     

DI-720系列高速数据采集卡及其应用

DI-720系列高速数据采集卡具有与计算机接、采样位数多、支持多路输入并可人工设置等特点.所带有的波形记录分析软件(WWB)和程序开发包(SDK),使数据采集更灵活、方便.并以C++ Builder 5为开发语言,举例详细地说明了其在多通道故障信号采集中的应用,证实了该卡的灵活性和高性能等优点.     

卫星天线的指向控制与可视化仿真

文中对卫星天线指向控制的可视化仿真问题进行了研究.首先应用动量矩定理建立系统的动力学模型,并采用经典的PID控制,在SIMULINK 中进行了数字仿真.然后通过MATLAB接口接收SIMULINK控制模型传入的数据;在Visual C ++ 6.0 中应用OPENGL系统函数,调用卫星3DS模型完成整个可视化仿真.     

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.     

Method for Measuring Velocity of Warhead Fragments Based on Photoelectric Detection

For measuring velocity and impacting position of single fragment of warhead, a non-contact measuring method is proposed, in which a six-light-screen array, a position indicator, a multi-channel chronograph and a computer are used.The principle of measurement is described. The key device of the system is a light screen array sensor which consists of six light screens allocated with certain geometrical parameters. When the fragment flies through the light screen array, the time of passing through each of the screens is recorded by the multi-channel chronograph. According to the time data and the geometrical parameters of the array, the velocity vector and the location of the fragment can be calculated immediately. The presented method can be used to locate the fragment and to measure the real velocity on its flying direction. It can also be used to measure the velocity of a fragment swarm after the system is engineered further.     

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.     

数码电子雷管中影响点火头性能因素分析

阐述了数码电子雷管中,点火药剂细结晶三硝基间苯二酚铅（LTNR）的制备工艺;从点火药剂的种类、加入黏合剂的质量分数、桥丝直径、点火头的电阻值、防潮漆的蘸涂等方面对点火头性能的影响因素进行了探讨;通过震动试验、并联起爆试验、延期精度检测与考核,试验结果表明：一次性合成的细结晶LTNR是制造数码电子雷管点火头较为理想的点火药剂,按技术要求生产的点火头性能指标能够满足行业标准要求。     

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.     

Design and Implementation of One Missile Visual Simulation System Based on OpenGL

The implementation of a missile＇s visual simulation system is explained that is developed with OpenGL（open graphic library） and the flight path and flight carriage in different stages of the missile are displayed. The establishment problems of the 3D scene are circumstantiated including the construction and redeployment of the model, creation of the virtual scene, setting of the multi-viewports and multi-windows etc. The missile＇s data driver, system flow, the modules and their mutual relations of the missile visual simulation system are discussed. The missile flight simulation results and effect of the scenes are given.     

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.     

Dynamic Encryption Technology in Ad-hoc Networks

A new dynamic encryption application in ad-hoc networks is proposed. The advantages of this method are its being able to use the previous ciphertext as a seed of a new encryption process, rendering the encryption process effective in all communication process by continuous dynamic key generation together with synchronization, and its capability to cut back on system bandages to a greater extent, which is valuable for the ad-hoc circumstance. In addition, the rationality and effectiveness of this novel encryption method have been verified by the test results.     

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.