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航空电子综合化仿真系统的设计与实现 总被引:4,自引:0,他引:4
讨论了航空电子综合化仿真系统的设计与实现 ,主要探讨了此仿真系统的软硬件开发、系统组成以及整个系统的总线信息流。仿真系统的设计是采用某型飞机的总线拓扑结构 ,将各个子系统连接起来 ,以达到综合显示、综合处理、综合控制、数据综合传输、资源共享的目的。各个子系统分别用一台计算机进行数字仿真 ,以代替其实体 相似文献
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某型飞机拦阻系统纠偏仿真分析 总被引:1,自引:0,他引:1
文章建立了某型飞机拦阻系统基于SIMULINK下的飞机撞偏拦阻仿真模型(也适用于非撞偏状况),进行了飞机撞偏阻过程仿真,仿真结果表明,此型飞机拦阻系统对撞偏飞机具有很好的纠偏能力,另外,所建立的仿真模型不仅适用于此型飞机拦阻系统,而且在对模型子系统进行更换后,该撞拦阻仿真模型也适用于其它飞机拦阻系统。 相似文献
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基于自适应多小波网络预测模型的飞控系统故障诊断仿真研究 总被引:1,自引:0,他引:1
提出了一个基于自适应多小波网络预测模型的飞机机械故障诊断新方法,给出了自适应多小波网络的构造方法和训练算法。以某型飞机作动器为例的计算机仿真结果表明,该方法故障诊断的能力及实时性都得以提高。 相似文献
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研究了战术任务综合控制系统分布式计算机实时仿真系统的总体方案和实现方法,在分析了综合控制系统结构和战术任务过程各阶段特点的基础上,提出了基于计算机局域网的分布式计算机实时仿真系统方案,然后根据实际条件建立了简化的分布式计算机实时仿真系统,并对空一空导弹模态的战术任务过程进行了全面的仿真,结果表明了该系统的有效性,同时验证了所采用的综合控制系统设计方法的有效性。本仿真系统的开发为进一步研究系统综合控制技术和战术任务飞行管理技术提供一个良好基础平台,具有实际的重要意义。 相似文献
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当今,科技的发展给人类的生活带来了极大的便利,但也给社会造成了一定的危害,为了遏止科技的一些负面效应,需要我们对科技进行社会控制,即构建一个行之有效的科技~社会控制系统。该系统由政策和法律控制、组织控制、市场控制和道德控制四个部分组成,这四个组成部分相对于整个系统来说是子系统,它们各有自己的特点、结构和功能,并且整个系统的运行还呈现出目的性、非线性和线性统一和可控性的原则。 相似文献
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A calculus for services innovation 总被引:1,自引:1,他引:0
Innovation in the services area - especially in the electronic services (e-services) domain - can be systematically developed by first considering the strategic drivers and foci, then the tactical principles and enablers, and finally the operational decision attributes, all of which constitute a process or calculus of services innovation. More specifically, there are four customer drivers (i.e., collaboration, customization, integration and adaptation), three business foci (i.e., creation-focused, solution-focused and competition-focused), six business principles (i.e., reconstruct market boundaries, focus on the big picture not numbers, reach beyond existing demand, get strategic sequence right, overcome organizational hurdles and build execution into strategy), eight technical enablers (i.e., software algorithms, automation, telecommunication, collaboration, standardization, customization, organization, and globalization), and six attributes of decision informatics (i.e., decision-driven, information-based, real-time, continuously-adaptive, customer-centric and computationally-intensive). It should be noted that the four customer drivers are all directed at empowering the individual - that is, at recognizing that the individual can, respectively, contribute in a collaborative situation, receive customized or personalized attention, access an integrated system or process, and obtain adaptive real-time or just-in-time input. The developed process or calculus serves to identify the potential white spaces or blue oceans for innovation. In addition to expanding on current innovations in services and related experiences, white spaces are identified for possible future innovations; they include those that can mitigate the unforeseen consequences or abuses of earlier innovations, safeguard our rights to privacy, protect us from the always-on, interconnected world, provide us with an authoritative search engine, and generate a GDP metric that can adequately measure the growing knowledge economy, 相似文献
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描述了一种地球太空环境的仿真,采用几何计算构建地球形状模型,将地球划分为128块(经线方向16块和纬线方向8块),计算得到每块区域顶点坐标,法向量,纹理坐标;使用MipMap技术根据视点与每块区域距离变化选择不同精度纹理粘贴;实时判断该区域的可见性,剔除不可见区域减少绘制开销;并采用cg和NormalMap技术将normal图与地球纹理图进行处理,实现地球表面的轮廓凹凸效果,同时添加云层纹理,得到了由地球纹理,云层纹理及NormalMap的多层混合纹理,达到比较逼真的效果;另外采用Billboard技术和纹理融合技术实现地球大气层光晕效果,使用了LensFlare技术实现太阳照射效果,最后采用skybox技术实现星空背景效果。Abstract: A simulation of earth and space environment was describedr.The whole earth was cut into 128 parts,16 in longitude,8 in latitude,and the position of vertices,normal vectors,texture coordinate were computed by geometry.Different resolutions of texture were chosen according to the distance from the eye to the area presented by the technique MipMap.The unvisible parts were eliminated by judging the parts’ visibility in realtime.Using the techniques of Cg,NormalMap and the mixture of the textures of the earth,the clouds and the multi-layered clouds,the relatively vivid result for representing the surface of the earth was achieved.Moreover,the technique of Billboard,Lensflare,SkyBox and texture blending were used to show the shine of atmosphere,sunshine,and the background of space. 相似文献
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许多程序模型是以数学或逻辑为基础设计并分析的,但程序模型的实现首先是个物理系统,它依物理规律,而非数学或逻辑规则活动.但人们习惯于用状态序列对并列程序模型的语义作数学处理.一旦偏序的状态空间用交叉的方法全序化,并用于论证程序性质,误导就在所难免.所谓误导,指的是与实际运行的偏差,借助于Petri网,可以将它们暴露出来.其实偏差的出现与Petri网的基本现象冲突(conflicct)、冲撞(contact)、并发(concurrency)和混惑(confusion)相关.本文用Petri网分析误导的情况. 相似文献
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SDG标准测试图及推理引擎论证 总被引:4,自引:0,他引:4
应用SDG技术对复杂系统进行安全分析推理,其引擎的性能测试至关重要。我们提出了采用系统标准的SDG测试图,对引擎进行测试。论述了测试所需的规模和指标,并针对应用领域特点,通过改变节点与支路规模、状态、关联关系、排列等因素,提出了一整套针对安全问题的SDG标准测试图。在此基础上,我们提出了极端与平均的性能测试方法。并运用SDG测试图对我们开发的SDG引擎进行完备性和运算能力的测试,效果达到实用水平。最后,我们对测试过程中暴露的问题,提出改进措施。 相似文献
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John HAMILTON 《系统科学与系统工程学报(英文版)》2004,13(4):469-489
1. Introduction The services industry provides services notgoods (Hughes and Mitchell et al., 1993). Thisindustry is moving towards globalization(Kathawala and Abdou, 2003). In 1870 theservice sector employed slightly more than 20%of the U.S.… 相似文献
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Fundamentals of the analytic network process — multiple networks with benefits,costs, opportunities and risks 总被引:1,自引:0,他引:1
Thomas L. Saaty 《系统科学与系统工程学报(英文版)》2004,13(3):348-379
The general theory of the ANP enables one to deal with the benefits, opportunities, costs, and risks (the BOCR merits) of
a decision, by introducing the notion of negative priorities for C and R along with the rating (not comparison) of the top
priority alternative synthesized for each of the four merits in terms of strategic criteria to enable one to combine the four
B, O, C, and R values of each alternative into a single outcome. Strategic criteria are very basic criteria individuals and
groups use to assess whether they should make any of the many decisions they face in their daily operations. They do not depend
on any particular decision for their priorities but are assessed in terms of the goals and values of the individual or organization.
Synthesis is made with two formulas, one multiplicative and one additive subtractive that can give rise to negative overall
priorities. This paper summarizes and illustrates basic complex decisions involving several control criteria under each of
the BOCR merits.
Thomas L. Saaty holds the Chair of University Professor, Katz Graduate School of Business, University of Pittsburgh, Pittsburgh, PA, and
obtained his Ph.D. in mathematics from Yale University. Before that he was a professor at the Wharton School of the University
of Pennsylvania for ten years. Prior to that he spent seven years at the Arms Control and Disarmament Agency in the State
Department in Washington, DC, that carried out the arms reduction negotiations with the Soviets in Geneva. His current research
interests include decision-making, planning, conflict resolution and synthesis in the brain. As a result of his search for
an effective means to deal with weapons tradeoffs at the Disarmament Agency and, more generally, with decision-making and
resource allocation, Professor Saaty developed The Analytic Hierarchy Process (AHP) and its generalization to dependence and
feedback, the Analytic Network Process (ANP). He is co-developer of the software Expert Choice and of the software Super Decisions
for decisions with dependence and feedback. He has authored or co-authored twelve books on the AHP/ANP. Professor Saaty has
also written a number of other books that embrace a variety of topics, including Modern Nonlinear Equations, Nonlinear Mathematics, Graph Theory, The Four Color Problem, Behavioral Mathematics, Queuing Theory,
Optimization in Integers, Embracing the Future and The Brain: Unraveling the Mystery of How It Works. His most recent book is Creative Thinking, Problem Solving & Decision Making. The book is a rich collection of ideas, incorporating research by a growing body of researchers and practitioners, profiles
of creative people, projects and products, theory, philosophy, physics and metaphysics...all explained with a liberal dose
of humor. He has published more than 300 referred articles in a wide variety of professional journals. He has been on the
editorial boards of Mathematical Reviews, Operations Research, Naval Research Logistics Quarterly, Mathematical and Computer
Modeling, Socio-Economic Planning Sciences, Applied Mathematics Letters, and several others. He also served as consultant
to many corporations and government. 相似文献
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针对复杂瞬变的多用户多队列多数据中心云计算环境中作业调度困难的问题,提出一种基于深度强化学习的作业调度方法.建立了云作业调度系统模型及其数学模型,并建立了由传输时间、等待时间和执行时间三部分构成的优化目标.基于深度强化学习设计了作业调度算法,给出了算法的状态空间、动作空间和奖赏函数.设计与开发了云作业仿真调度器,完成作... 相似文献