基于VC++6.0 的ARINC429 总线接口卡通讯程序

为控制侦察任务舱内的单台或多台航空相机同时工作,设计基于ARINC429总线接口卡的航空相机综合控制系统。在简要介绍航空相机综合控制系统的基础上,详细阐述基于ARINC429总线接口卡通讯软件流程和程序设计方法。结果表明,该方法操作简单、运行可靠,能减少保障设备数量和提高检测效率,并已成功应用于某型侦察机部队中。     

基于双口RAM的ARINC429航空数据总线收/发系统设计

通过分析ARINC429航空总线的数据格式,设计了一套由双口RAM作为数据连接纽带,具有数据缓冲功能的ARINC 429数据总线收/发系统.该系统完成了429总线与PC机ISA总线的数据格式和通讯协议的转换,已经在实际中得到推广应用.     

多功能机载数据总线PCI接口通讯卡设计

设计了一种PCI总线接口通讯卡实现了PC机与ARINC429等多种形式的机载总线的信息交互.从硬件和软件设计两个方面详细介绍了该通讯卡的设计原理和实现方法.     

某专用429总线接口协议的FPGA实现

ARINC429是一种在航空电子系统领域被广泛应用的总线标准。针对空空导弹专用429总线,提出了一种内置控制核的通用化、模块化的429总线协议IP核设计方法,使其具有内部存储能力,以及通道数可裁减,波特率、中断请求时间和收发模式等可选择,移植性较强等特点。利用硬件语言VHDL,采用基于FPGA的硬件实现方法,有效地提高数据通信模块的处理能力和集成度,降低了研制成本,提高了研制效率。     

基于虚拟仪器的某型设备信号检测系统

针对某型设备检测的不足,基于虚拟仪器的设计思想及功能模块化的设计方法构建了一个信号检测系统,并采用以Labwindows／CVI开发平台建立良好的人机界面。介绍了该系统的软、硬件设计方法及ARINC 429总线通信协议。测试结果表明,该系统能缩短检测周期,提高设备的自动化测试程度。     

基于IVI规范的429驱动程序设计

结合ARINC429 VXI模块,参照其他类的IVI规范,探讨了429驱动函数的规划方案,由于IVI有关429通讯类仪器尚未制定类驱动规范,本文实际上也就是尝试制定了一种简单通用的429仪器类驱动规范,按照这一类结构,已经成功实现三个公司429仪器的互换,同时,对比较关键的IVI驱动程序的编制方法和配置文件作出了详细的定义说明,该方法和规则对于其他的虚拟仪器驱动程序的开发具有参考与推广价值。     

基于DEI1016的ARINC429总线数据转换卡

基于DEI1016的ARINC429总线数据转换卡,以ATMEGA162为核心,采用CPLD芯片EPM7128和AVR单片机ATMEGA162相结合实现总线数据格式转换和数据传输.ATMEGA162程序设置串口和DEI1016工作模式,并转发数据.CPLD实现周边接口如数据锁存、数据格式转换,且为ATMEGA162和DEI1016提供统一时钟.     

基于FPGA的ARINC429总线多通道多功能接口芯片的设计与实现

介绍了利用FPGA芯片自行设计ARINC429总线多通道多功能接口芯片的基本原理,并给出了核心部分的结构框图及部分VHDL语言描述.     

基于HS-3282和CPLD的ARINC429总线接口

基于HS-3282和CPLD的航空总线ARINC429接口,HS-3282芯片由2接收器和1发送器组成.HS-3282和8位单片机间的接口逻辑全部在单片CPLD中实现.系统发送数据时,将数据存入发送缓冲区,由通信模块将数据发送出;接收数据时,将其存入接收缓冲区,并标识数据供上层模块处理.     

基于ARINC429总线接口卡的航空相机综合控制系统

采用AEC—PCI—44ARINC429,总线接口卡设计了航空相机综合控制系统,给出了硬件设计和软件流程图。该系统既可以控制侦察任务舱内的多台航空相机同时工作,也可控制单台工作。已装备部队使用,实践表明：操作简单、运行可靠,能达到减少保障设备数量和提高检测效率目的。     

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.