导弹火工品通用防爆测试仪的设计与应用

针对导弹火工品测试现状及其存在的安全隐患问题,研究设计一种自动检测的导弹火工品通用防爆测试仪,介绍了测试仪的系统组成、测试原理和主要技术途径。测试仪采用计算机测控技术和数据采集技术设计自动测控电路,并通过电阻测量模块和引信测试模块实现火工品自动识别检测;采用VB语言开发测试界面,完成设备自检、火工品测试、数据处理、查询和帮助等功能。应用结果表明:测试仪功能齐全、操作简便、安全性高,很好地解决了导弹火工品的防爆测试问题。     

接地电阻测试改进分析

通过分析变频法测量接地电阻的优点,对现有接地电阻测试仪器ZC-8型接地电阻测试仪的改进进行研究,设计了变频电源。利用变频电源代替手摇发电机不仅可以有效减小地中杂散电流特别是工频干扰对测量的影响,消除手摇发电机带来的稳定性差等不足,而且由于使用蓄电池,还保持了ZC-8型接地电阻测试仪原有的体积小、质量轻、便于携带等优点。     

基于虚拟仪器的火工品电阻测试系统

以精密检测电路为核心单元,采用PC机、研华PCL-818HG采集卡、PCI-1762继电器输出卡及信号调理板,构成功能完备的火工品电阻测试系统。利用LabWindows/CVI虚拟仪器编程语言,构造了PC机虚拟操作面板,可完成多型火工品的桥丝电阻及绝缘电阻测量,其检测精度、重复性及安全性均满足设计要求,取得了良好的使用效果。     

一种导弹绝缘电阻测试仪的软件设计

软件是某导弹绝缘电阻测试仪的重要组成部分.该软件主要由单片机和上位机两部分组成.单片机部分主要完成对测试流程的控制和对测试数据的处理,上位机部分主要是完成人机交互,对测试结果进行处理和修正,显示测试结果,并且对测试的结果进行保存.两部分的软件通过串口进行交互.实验表明,该软件的设计能够完成该绝缘电阻测试仪的测试要求,达到了系统的研制要求.     

一种导弹绝缘电阻测试仪的软件设计

软件是某导弹绝缘电阻测试仪的重要组成部分。该软件主要由单片机和上位机两部分组成。单片机部分主要完成对测试流程的控制和对测试数据的处理，上位机部分主要是完成人机交互，对测试结果进行处理和修正，显示测试结果，并且对测试的结果进行保存。两部分的软件通过串口进行交互。实验表明，该软件的设计能够完成该绝缘电阻测试仪的测试要求，达到了系统的研制要求。     

便携式引信通用测试仪

针对现有引信测试系统设备分散、专机专用、操作繁琐等问题,设计了基于STM32的便携式引信通用测试仪,以完成对4种类型引信的检测。通过设计主控制模块、引信类型检测模块、遥测及模拟解保模块和通信模块等9个功能模块,采用引信类型快速识别、模拟解保信号可靠产生、遥测电压隔离测量等技术,该测试仪实现了对引信的自动识别、测试及结果判断,并可实时显示测试结果。实验结果表明,该通用测试仪测试精度高,操作简单可靠,性能稳定,达到设计要求。     

碳薄膜对电极的电学与电化学性能研究

为研究碳黑掺入量对TiO2/石墨共混薄膜的电学与电化学性能的影响,采用场发射扫描电子显微镜、四探针电阻率测试仪、电化学交流阻抗图谱以及太阳能电池综合测试仪对碳薄膜的表面形貌、电学、电化学性质以及电池的光电性能进行表征测试。结果表明:碳黑的加入使碳对电极的方块电阻降低了35%;当掺入质量分数为5%的碳黑时,碳对电极的界面电荷传输电阻及光电性能达到最佳,其光电转换效率可达到Pt对电极的74%。     

碳薄膜对电极的电学与电化学性能研究

为研究碳黑掺入量对TiO2/石墨共混薄膜的电学与电化学性能的影响,采用场发射扫描电子显微镜、四探针电阻率测试仪、电化学交流阻抗图谱以及太阳能电池综合测试仪对碳薄膜的表面形貌、电学、电化学性质以及电池的光电性能进行表征测试。结果表明：碳黑的加入使碳对电极的方块电阻降低了35%;当掺入质量分数为5%的碳黑时,碳对电极的界面电荷传输电阻及光电性能达到最佳,其光电转换效率可达到Pt对电极的74%。     

基于PXIe总线的数字示波器现场高效校准系统

为提高数字示波器现场校准效率，提出一种可并行校准5台1GHz及以下带宽的数字示波器的软硬件实现方法。按照GJB7691-2012对计量标准装置的要求，每个数字示波器校准通道均需具备直流电压、时标、稳幅正弦波和快沿脉冲4种基本信号输出功能和电阻测量功能。4种信号输出功能及电阻测量功能的模块设计、与被校数字示波器之间的通路设计以及并行校准软件设计是实现现场高效校准的重点。对校准装置的软硬件总体方案进行设计，对装置的主要功能模块实现方法以及并行校准软件设计方法进行了详细描述，设计并行按需校准、并行校准和串行校准试验，试验结果表明此方法可快速、高效地实现数字示波器的并行校准。     

汽车道路试验多功能测试仪

开发研制了一种用于汽车道路实验的多功能测试仪,介绍了测试仪的组成与工作原理,以及为保证准确度所采取的措施·该测试仪功能多、可靠性高、重量轻、携带方便·使用表明,测量准确度符合汽车道路试验要求·     

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.     

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.     

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.     

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。     

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.     

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.