直升机视景仿真及座舱仪表显示系统实现

以开发一套直升机飞行视景仿真系统为目的,提出了一种基于Multigen Creator和Vega软件的三维视景仿真系统解决方案.利用三维图形开发软件Creator对座舱仪表模型进行可视化建模,使用自由度设置(DOF)技术实现仪表指针的动态交互.将模型加载到Vega的环境中,在VC++环境下,基于MFC实现了仪表的驱动程序,给出了具体的实现方法,设计了座舱仪表仿真界面.最后在Vega场景中仿真直升机的飞行状态,直观形象地反映直升机的飞行特性.实际仿真显示,该视是景系统的仿真效果形象逼真,令人满意.     

基于飞控半物理仿真平台的模拟座舱及虚拟仪表系统的研究

模拟座舱及其虚拟仪表作为飞控半物理仿真系统中用户和系统交互的设备,具有重要的作用;利用Visual C++/GL Studio联合开发了虚拟仪表显示界面,并采用Socket通讯接收来自飞行仿真计算机的仿真数据,驱动程序根据相应的数据驱动仪表界面进行演示,向用户反馈飞行器的飞行状态;同时,通过模拟座舱的控制输入设备,将模拟操纵信号输出给实时网络,实现对飞行器操纵的目的;试验表明,该系统具有良好的人机交互界面,使仿真人员产生身临其境的"真实"感觉。     

基于OpenGL的飞行实时三维动画仿真

在飞行模拟训练器中,显示系统是其重要组成部分.为全面、直观并且实时地反映飞行仿真计算机得到的仿真数据,则采用三维动画方式来制作这个显示系统.文章讨论了使用开放图形库(OpenGL)结合Visual C 6.0开发平台及MFC框架,构建基于OpenGL的飞行实时三维动画仿真系统的方法,并利用从串行口接收来的实时数据实现实时仿真.实验证明,该系统仿真效果好,运行正确、可靠、实时性好.     

基于计算机网络的飞机全系统综合仿真

介绍基于计算机网络的飞行全系统综合仿真技术，按飞机系统的组成，构成相对独立的飞机运动数学仿真模型，控制系统仿真模型，火控系统仿真模型及座舱仿真模型，由计算 成一个基于计算机网络的实时综合飞行仿真系统，从而实现飞机系统的全系统综合仿真，包括飞机性能仿真，发动机性能仿真，操纵与控制系统仿真，火力控制系统仿真等。它为２整体性能的研究提供了一个地多种专业，多种学科综合的高级仿真平台体现了计算机技术对系统仿     

面向半实物仿真飞行平台的通用型飞行参数测试系统设计

针对半实物仿真飞行平台在飞行科目评估、平台寿命研究及操作标准规范的制定等诸多领域缺乏完整原始数据支持的问题,提出了一种基于LabVIEW的通用型飞行参数测试系统.通过模拟座舱操控输入信息,如飞行摇杆、油门杆、开关控制面板和飞行脚舵等模拟指令,实现了与项目相关方的三维视景仿真软件的系统联试.多次测试结果表明:系统能够对飞...     

飞行仿真系统数据可视化设计与实现

研究飞行仿真系统结果数据可视化,为验证分析飞行仿真系统结果的正确性,需要对仿真系统输出的飞行性能数据进行实时在线观测并与标准数据进行对比分析。针对飞行仿真系统对飞机飞行数据实时观测的需求,设计了一种可实时观测的飞行仿真数据可视化方案。在建立仿真系统模型的基础上,为了提高系统的可靠性和优化数据结构,提出了新的数据结构和曲线生成算法绘制实时曲线,实现了数据的可视化观测,避免了实时绘制过程屏幕的闪烁和曲线出现的锯齿。并结合飞行仿真特点,利用MapX组件技术加载了具有导航台的全国地图,对传统的电子地图显示进行了改进,实现了飞机在地图上的实时航迹观测。仿真结果表明,系统能够实时观测仿真结果并分析系统误差,实现飞行仿真数据的可视化,并可验证飞行仿真系统的正确性。     

某型飞行模拟器综合显示仿真系统设计

本文针对某型航空装备的综合显示系统的模拟需要,运用仿真软件设计开发出一套显示仿真模拟系统平台,该系统平台采用Visualc＋＋开发环境、基于OpenGL图形库和MapX组件进行软件开发,可模拟实现飞行座舱的各系统工作画面,是该型装备模拟器中的重要人机交互部分。     

基于Web的ARINC661座舱显示内核封装与设计

ARINC661为座舱显示系统（Cockpit Display System,CDS）和用户应用（User Application,UA）提供了接口规范,已经成为现代座舱显示研发的基础。在ARINC661规范中,CDS内核负责加载定义文件实现画面管理,但是目前支持定义文件设计的桌面型软件已经无法满足飞行机组在线评估显示画面的需求。根据CDS的运行机制,封装并设计了基础显示库、显示部件的逻辑存储结构、部件显示层叠规则、数据更新接口及逻辑。经过测试验证,结果表明座舱显示内核的各项功能正常,可以实现Web端的座舱画面显示预览。     

直升机飞控系统三维动画仿真平台设计与实现

为了更好地分析和设计直升机飞行控制系统,开发了直升机飞行控制三维动画仿真平台.平台适用于各种直升机飞行控制系统设计与仿真,可以载入和显示各种控制器、直升机模型,并用数字、曲线和三维动画显示仿真结果.仿真平台利用Visual C++ 6.0编程,MFC开发软件主界面,Matlab引擎提供后台计算服务,Creator建立直升机模型和飞行环境,Vega实现实时动画显示,实现了软件间接口平滑、无缝的互连.以UH-60A黑鹰直升机全包线飞行控制系统的设计仿真为例,采用H∞回路成形和定量反馈理论(QFT)相结合的内外回路设计方法,验证了控制方法的有效性和此仿真平台的先进性.     

基于VAPS的FMS CDU 实时仿真系统开发

基于VAPS建立了飞行管理系统控制显示组件（CDU）实时仿真系统。在满足真实性和可靠性的前提下，给出了基于VAPS的CDU设计方法。建立了一个通用的、基于网络连接的飞行管理系统的CDU模型。在满足实时性要求的前提下，实现了飞机管理系统中控制显示组件的动态图形仿真以及在实时环境中飞行计划的生成。对飞行计划的生成进行了讨论，解决了仿真中的一些关键技术，并实现了在实时运行环境中的故障处理、数据传输及通信功能。为达到一个完整的FMS仿真系统打下了基础。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。