共查询到20条相似文献,搜索用时 125 毫秒
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为节约消防训练资源,增加虚拟现实训练的沉浸感和体验感,设计了基于Steam VR的交互仿真水枪灭火训练系统。采用霍尔传感器、信号转换电路板等硬件采集传输仿真水枪的开关信号,利用Unity3D引擎结合VIVE头戴显示器搭建、呈现虚拟现实火灾场景,通过C#编程控制水枪与虚拟火灾场景进行交互,完成系统的设计。结果表明:仿真水枪替代VIVE手柄控制器进行交互训练,能极大地提高受训者的沉浸感和体验感,提升受训者使用消防多功能水枪进行灭火的能力。 相似文献
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虚拟场景漫游系统的体系结构分析 总被引:3,自引:1,他引:3
虚拟场景技术是虚拟现实系统的重要组成部分,它负责解决虚拟现实中“视”的问题,是对系统沉浸感影响最大的一个模块。对虚拟场景技术的应用作了简单的介绍,阐述了其特点及与一般三维动画的区别,分析了其重要性。对虚拟场景漫游系统的一般结构进行了分析和描述,并从系统学的观点出发,解释了虚拟场景漫游系统构建过程中其组成模块之间的关系,同时,介绍了系统中地形匹配、线性交会检测、漫游控制及鼠标拾取等关键技术及其实现方法。 相似文献
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以一个基于分布交互式的水下制导仿真系统为需求背景,论述了VR中实时三维图像生成与显示的相关内容及其实现技术,并对应用开发中的有关技术问题做了分析,给出了解决方法。“VR”的实现基于OpenGL图形库,采用计算机图形技术和多媒体技术,能够快速、逼真地建立水下虚拟场景,并已应用在水下制导仿真系统中,仿真实验表明该方法有良好的视觉效果。 相似文献
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针对存在船舶动态不确定和外界干扰的欠驱动水面船舶轨迹跟踪控制问题,提出一种基于动态面控制(dynamic surface control,DSC)和最小学习参数法(minimal learning parameter,MLP)的自适应滑模控制方法。在控制律的设计过程中,为实现位置跟踪误差的收敛,利用反步法设计船舶前向速度和横漂速度的虚拟控制律镇定轨迹跟踪误差;引入DSC技术,用于消除反步法对虚拟控制求导引起的“微分爆炸”问题;另外,采用MLP技术,以单参数在线学习代替所有权值在线学习,减少控制器的计算量,避免出现“维数灾难”问题,并结合带有“σ-修正”的自适应律,防止参数漂移,易于工程的实现。稳定性分析证明了所设计控制律可以保证轨迹跟踪船舶闭环系统中轨迹跟踪误差信号一致最终有界,仿真结果验证了所设计控制器的有效性。 相似文献
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《系统工程理论与实践》2014,(5)
正August 10-14,2015Beijing,ChinaThe International Congress on Industrial and Applied Mathematics(ICIAM)is the premier international congress in the field of applied mathematics held every four years under the auspices of the International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists 相似文献
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《系统科学与系统工程学报(英文版)》2014,(2)
正AF:Any Field The School of Economics and Management at Tsinghua University(Tsinghua SEM)invites applications for faculty positions at all levels(Assistant Professor,Associate Professor and Full Professor)in any fields of business administration and management.Tsinghua SEM is the only school 相似文献
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The paper is about negotiating with issues that discourage innovation. The subject is environmental deterioration, with concern directed at the impediments that keep it from being innovatively resolved. The paper is organized around three issues. (1) The dominant model of environmental concern, called environmental protection, is managed predominantly via command and control approaches. (2) Command and control, by relying on analytical segmentation to subdivide the problem into digestible bits and using formal legislation to direct it, are not up to emerging challenges in the area. (3) More robust models are available but difficult to experiment with due to impediments that discourage change. These impediments are seen in ideals associated with protection, prevention, recycling, and sustainability that tend to do more to sustain harmful practices than to seek beneficial alternatives. Being able to appreciate the underlying restrictions of entropy could help stimulate a more innovative agenda. These issues are tested via a project funded by the EPA entitled ENERGY STAR Homes. 相似文献
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This paper presents an outline of an Oriental systems methodology: the Wuli Shili Renli approach (WSR). The basic theme of WSR contends that wuli (regularities in objective existence), shili (ways of seeing and doing), and renli (patterns underlying human relations) constitute a differentiated whole that conditions systems projects. WSR suggests that we should design and employ appropriate methods to address and tackle wuli shili and renli elements in a theoretically informed and systemic way. The background, philosophy, process, principles, and some practical applications of the methodology are preliminarily outlined. 相似文献
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