基于CAN总线网络的鱼雷制导系统信息传输可靠性分析与设计

为了实现将CAN总线网络应用于鱼雷制导系统中,通过对基于CAN总线网络的鱼雷制导系统信息传输的试验验证与硬件设计,形成了在进行鱼雷制导系统CAN总线结构网络设计时,应该从制导系统CAN总线协议规划及报文制定、供电体制规划、CAN总线终端阻抗匹配及输入输出隔离设计以及电磁环境要求等方面来提高CAN总线数据传输可靠性的经验和设计方法.初步试验表明,CAN总线网络技术可以满足鱼雷电子系统的通信需求.     

基于嵌人式技术的鱼雷制导系统结构研究

讨论了嵌入式实时操作系统VxWorks及ARM技术，着重研究了其在鱼雷制导系统中的应用方案，并与目前的鱼雷制导系统作了比较。研究表明，使用基于嵌入式技术的鱼雷制导系统优于传统的鱼雷制导系统。     

嵌入式系统μC/OS-Ⅱ在鱼雷制导系统中的应用研究

文中在分析实时嵌入式系统μC／OS-Ⅱ和ARM芯片LPC2119的基础上．着重讨论了μC／OS-Ⅱ在鱼雷制导系统中的应用．并与传统鱼雷制导系统进行了比较。研究表明使用基于嵌入式技术的鱼雷制导系统将在多方面优于传统的鱼雷制导系统。     

采用分布式和总线结构的鱼雷计算机制导系统

本文以主，被动自导＋线导的重型鱼雷为对象，面向二十一世纪初的海战环境，讨论了鱼雷武器系统对制导系统的需求，提出了分布式和总线结构的鱼雷计算机制导系统方案，其优点主要表现在分任务并行处理提高了制导系统的容量和处理速度，为信息处理技术的应用和系统的发展提供了良好的硬件环境；总线式接口方式则提供了冗余的计算机系统结构，提高了系统可靠性。     

鱼雷制导系统集成开发环境的结构研究

针对鱼雷制导系统软件开发的需求,研究了基于Eclipse的鱼雷制导系统嵌入式软件集成开发环境的结构和集成需求等,提出了基于Eclipse集成制导系统的设计、调试和试验任务的解决方案。通过开发Eclipse类插件,有效集成制导系统的各个任务模块,为系统软件设计人员提供了一个具有统一、友好的界面和操作风格的系统软件。集成环境具有开发时间短、开发成本低的优点。该集成环境还具有开放性的特点,未来开发的新一代鱼雷制导系统的任务模块也可集成到现有的系统中。     

CAN总线技术在地空导弹中的应用

对CAN总线技术在地空导弹中的应用进行了研究和探讨。简要介绍了CAN总线技术,给出了导弹系统的一般结构,提出了CAN总线在导弹系统总体设计、控制与制导系统仿真和导弹遥测系统中的具体应用方式,这对提高导弹系统内部空间利用率,降低成本,实现自动化测试具有重要的参考价值。     

基于CAN总线的导弹制导系统嵌入式仿真网络的设计

基于嵌入式计算机通信网络的仿真系统是导弹控制系统研究中的重要课题.文中应用CAN总线和嵌入式计算机技术,构建了基于嵌入式计算机通信网络的导弹制导系统数字仿真网络,实现了制导系统的数字仿真.     

基于嵌入式技术的鱼雷制导系统结构研究

讨论了嵌入式实时操作系统 VxWorks 及 ARM 技术,着重研究了其在鱼雷制导系统中的应用方案,并与目前的鱼雷制导系统作了比较。研究表明,使用基于嵌入式技术的鱼雷制导系统优于传统的鱼雷制导系统。     

CAN总线在汽车AMT上的应用研究

介绍了CAN控制器SJA1000的特点、CAN协议通信格式及80C196KC单片机特点，并以CAN控制器SJA1000在AMT样车上进行的运用为例，结合CAN协议，说明了一种通用型CAN总线的开发与设计方法。     

MIC总线与CAN总线综合分析比较

基于总线体系结构、通信协议、性能、应用场合以及经济性对M IC总线和CAN总线进行了综合分析与比较.结果表明,M IC总线与CAN总线均具有可靠性高、实时性好的特点,并且有自己特定的应用领域.但CAN总线比M IC总线的应用更广泛,且已经开始涉足军用领域.     

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.