基于LMBP网络的防空导弹武器系统效能评估模型

建立了防空导弹武器系统效能评估的指标体系.对应用LMBP神经网络解决防空导弹武器系统效能评估的方法问题进行了探讨,并且给出了神经网络的评估模型及算法.实例证明:该方法是可行的.     

不确定信息条件下先进UAV综合效能评估方法

为解决UAV效能评估准则权重信息不确定条件下的效能评估问题,提出一种不确定信息条件下先进UAV综合效能评估方法.基于UAV的自主控制能力,建立更加综合的UAV效能评估模型;通过分析UAV的侦察效能、攻击效能和自主控制效能,对该评估方法进行验证,并利用Matlab仿真实验进行验证.仿真结果表明:该方法计算方法简单、分析结果直观、简洁,具有一定的有效性和适用性.     

基于属性测度的导弹武器系统效能评估

基于属性集和属性测度理论的导弹武器系统效能属性综合评估方法,先建立导弹武器系统效能指标体系和效能评估模型,再将评价系统分为单指标测度计算、多指标测度计算和系统效能计算.并利用层次分析法(AHP)确定各指标的权重系数,进行实例验证.结果表明,该方法是导弹武器系统效能评估的有效方法.     

舰载机救援装备效能评估指标体系

为解决舰载机救援装备效能评估过程中目标与实现未达到完全匹配的问题,构建一种效能评估指标体系.通过舰载机救援装备效能评估指标的分类和指标体系的构建准则,对构建装备效能评估指标体系过程及普遍性问题进行分析,基于"软件体系框架结构"的概念,提出效能评估指标体系构建的规范过程,根据舰载机救援装备效能评估任务的目标和要求,建立效能评估指标体系结构,并对指标有效性进行检验,运用主客观组合赋权的方法确定指标权重.该研究具有较好的应用价值,建立的指标体系为舰载机救援装备效能评估奠定了基础.     

基于信度理论的效能评估方法

针对现行的效能评估方法中出现的问题,提出一种采用"效能信度"作为指标进行评估的方法。基于信度理论,在给出了效能信度的定义的基础上,用效能信度四元组作为评估指标,建立了效能信度各指标的评估模型,解决了效能评价中效能大小和效能置信度的问题。实例结果表明:该方法切实有效,使得评估更为科学、合理、全面、可信。     

弹道导弹综合效能评估方法

弹道导弹的综合效能是反映其整体性能的最重要的综合性指标.在对弹道导弹进行系统分析的基础上,建立了分层的效能评价指标体系;确定了采用模糊综合评判的评估方法;建立了评估的数学模型并分析了模型中各环节的选择方案.最后用算例验证了该评估方法的有效性.     

基于模糊综合评价法的某型布雷装备系统效能评估

通过分析布雷装备系统作战能力构成特点,建立了系统效能评价指标体系,利用层次分析法确定了各评价指标的权重;基于模糊综合评价法构建了某型布雷装备系统效能评估模型,结合装备实际,实现了对装备系统效能评估,并与现役同类布雷装备系统效能进行了对比分析.分析结果表明,该方法解决了该装备系统效能评估过程中部分信息不完全、模糊不确定等方面的技术难题,评估结果直观明确,符合装备性能实际,达到了预期目的.     

基于ADC模型的地地导弹武器系统作战效能评估

运用美国工业界武器系统效能咨询委员会(WSEIAC)评估武器系统效能的方法,综合地地导弹武器系统的特点,建立了适合地地导弹武器系统作战效能评价方法的数学模型,并对模型中各有关参数进行了初定.该模型的建立,为地地导弹武器在作战行动中提供一定的决策依据.     

基于D/S证据推理的地空导弹武器系统效能评估

阐述了D/S证据推理的数学原理,探讨了D/S证据推理方法在地空导弹武器系统效能评估中的应用,并建立了地空导弹武器系统效能评估模型,最后结合具体实例进行分析.经过检验该方法具有较好的应用价值.     

导弹防御中指挥控制通信系统效能评估方法

采用系统学中由上而下的分析方法,将目标弹看作时间敏感性目标,对弹道导弹的拦截概率进行建模.在分析弹道导弹时间特性的基础上,提出了基于拦截概率的指挥控制通信系统效能评估方法,建立了指挥控制通信系统的效能评估模型,并利用该模型对指挥控制通信系统的效能进行分析.仿真算例表明基于拦截概率的效能评估方法是有效可行的.     

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.