基于改进FAHP的民机修理级别经济性分析研究

针对民机修理级别分析(LORA)经济性分析模型较少,且存在数据缺失,可信度较差等问题,提出了基于模糊层次分析法(FAHP)的修理级别经济性分析模型;在此基础上,利用模糊层次分析法确定各评价指标的权系数,并对灰色关联系数加权得到灰色关联度,实现了基于模糊层次分析法和灰色关联分析法的民机修理级别经济性分析综合评估;最后通过实例分析,验证了所提模型的合理性和有效性。     

基于改进AHP法的灰色关联分析在先进连队评估中的应用

根据评估对象,采用构造评估因素集的方法建立了先进连队评估的目标体系结构,并采用了层次分析法计算各指标的权重,利用灰色关联分析计算出关联度,得出了各连的评估结果．实例证明了该方法具有较强的实用性．     

维修保障系统效能评估的灰靶模型

以灰色理论中的灰靶技术为基础,结合层次分析法得出效能指标权重,由此构造维修保障系统效能评估的灰靶模型.并通过确定各指标的极性、构造影响空间和指标序列、构造标准模式、进行灰靶变换、计算灰关联差异信息空间后,完成靶心系数和靶心度的计算.实例与层次分析法比较结果验证了模型的准确性.     

基于灰色模糊综合评判的爆破安全评估

针对爆破技术面临的安全问题,提出一种采用灰色关联分析和模糊综合评判集成的爆破安全评估方法。按照层次分析法,结合对影响爆破安全因素的分析,建立工程爆破安全评估指标体系,利用模糊综合评判与灰色综合评估方法集成建立的方案排序模型,对方案评估和排序过程中的模糊性和人脑综合判断的灰色综合分析性质进行评估,并通过实例进行分析。实验结果表明:灰色模糊综合评判方法能够集成灰色关联分析和模糊综合评判的优点,使评估更加的客观,有效。     

防空信息战系统的灰色层次关联评价模型

针对防空信息战的特点, 建立了评价指标体系.同时, 将灰色关联分析与层次分析相结合, 提出了灰色层次关联分析, 并对防空信息战系统的效能评价进行了研究, 建立了防空信息战系统的灰色层次关联评价模型, 给出了评价防空信息战系统的具体过程.最后, 通过实例计算表明模型的实用性和价值.     

基于体系作战效能的武器装备体系评估

在武器装备体系评估的基础上,提出了一种基于体系作战效能的武器装备体系评估方法,建立了体系作战效能的武器装备体系评估模型,通过灰色关联分析法与层次分析法的集成,对武器装备体系的作战效能进行了综合评估研究,最后,通过一个实例说明该评估方法的可行性。     

基于层次-灰色分析法的飞行编队作战效能评估

飞行编队的作战使用效能的评价指标的实现,首先采用层次分析法确定各因素的权重,再用灰色评估理论建立飞行编队作战效能评估模型.步骤包括:确立飞行编队作战效能的指标体系、应用AHP法确定每个因素集中各因素的权重、确定评估样本矩阵、确定评价灰类、计算灰色评估评估权向量,最后算出评价结果.     

装甲装备修理分队抢修能力建设水平评估

在构建装甲装备修理分队抢修能力建设水平评估指标体系的基础上,建立了以改进型层次分析法与灰色聚类评估法为基础的综合评估模型,结合实例对某装甲装备修理分队的抢修能力建设水平进行了综合评估,并运用雷达图法对抢修能力建设过程中存在的问题进行了分析,为指挥员了解修理分队的抢修能力水平、改进和完善抢修能力建设提供了决策依据。     

导弹武器系统效能的层次-灰色评估方法研究

介绍了目前评估导弹武器系统效能的各种方法。指出了它们各有其适用性和局限性。依据灰色系统理论建立了一种改进的评估方法——层次-灰色分析法，描述了利用该方法进行评估的基本步骤。该方法能克服现有一些方法的局限性，可以提高效能评估的有效性及精确度。通过一个灰色评估案例，验证了层次-灰色分析法的正确性和实用性。     

基于最小二乘灰色关联分析法的目标威胁评估

对来袭空中目标威胁程度进行评估与排序是防空导弹武器系统首要问题.传统的灰色关联分析法在应用于空中目标的威胁评估和排序时,其结果有可能自相矛盾.运用最小二乘灰色关联分析法对来袭空中目标威胁进行评估,提高了对目标威胁评估和排序的能力.通过仿真,验证了该方法的有效性.     

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.