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《实验室研究与探索》2017,(5):79-83
针对现代控制理论实验资源紧张问题,提出一种基于倒立摆机理模型的开放式虚拟仿真系统开发方法。首先,根据装置机理建立倒立摆系统的状态空间模型;然后应用LabVIEW软件绘制倒立摆装置操作界面,并编制后台程序实现其模型仿真;最后利用OPC技术实现虚拟仿真系统变量数据的共享,以方便学生测试控制算法。该仿真系统不但具有良好的人机交互界面,能够较好地模拟真实实验装置,而且具有很好的开放性,为学生自主编程留下了充足空间,有助于其创新能力培养。 相似文献
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基于SDSS的区域开发决策支持模型库系统初探 总被引：1，自引：0，他引：1
李亚丽 《商丘师范学院学报》2004,20(2):149-151
在简要介绍SDSS的基础上，结合图表建立区域开发决策支持模型库系统的框架，并重点介绍了模型库、模型数据库、模型方法库、模型库管理系统、人机交互界面及区域开发决策支持模型库的智能特征，对基于SDSS的区域开发决策支持模型库系统进行了初步探索． 相似文献
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《东南大学学报》2021,(2)
为了提升数字孪生车间人—物理—虚拟的协调与融合,对数字孪生车间的三维可视化监控与人机交互进行研究.首先,提出了一种新的面向数字孪生车间的三维可视化交互系统六维模型,由于传统的数字孪生五维模型忽略了人机交互的重要性,因此增加了用户终端新维度;然后,提出了一种车间生产过程分层实时数据驱动映射模型,同时,提出了基于OPC UA的工业物联网实时数据采集方法.基于系统六维模型,介绍了基于虚拟现实的三维可视化虚拟环境创建流程,以及基于数据管理云平台的数据驱动流程.最后,以叶片转子试验车间为对象对系统六维模型进行验证,开发了三维可视化交互系统.结果表明,该系统的透明度更高,实时数据驱动更高效,促进了人—物理—虚拟的协调与融合,对于数字孪生车间建设具有现实意义. 相似文献
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张鹏 《潍坊教育学院学报》2014,(6):104-106
机指系统交互式维修训练平台是将装备常见故障查找与维修方面的详细信息进行梳理分析,采用标准的技术格式进行信息编辑、存储和人机交互输出的系统。本文从交互式维修训练平台的研究意义、组成结构、联网通信模型、安全控制四个方面进行了研究,为系统的研制提供理论依据。 相似文献
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交互式信息服务模型强调人机交互过程中对用户动态的反映,注重用户认知因素和非认知因素的结合,旨在构建支持对用户自适应的用户模型。通过提出使用模糊集的方式,对在线用户进行建模,同时描述了基于这种用户模型进行用户行为在线跟踪和用户行为预测的方法,并介绍一个系统实现构成。 相似文献
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为了全面、生动地展示建筑物,增强用户漫游体验时的沉浸感与真实感,文章讨论了建筑物漫游的关键技术与实现方法。利用VRML语言与3DSMax软件,创建了场景三维模型;基于VRML和Cult3D平台,实现了系统人机交互功能以及真三维立体模型展示。 相似文献
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根据数字化校园统一门户系统权限管理需求分析,深入探讨了门户数据的存储设计,人机交互式授权管理,门户授权的安全约束机制和个性化角色界面等问题。在门户系统中采用二级权限设置,扩展基于角色存取控制原理的三层式门户授权管理模型。能较好地解决门户系统中统一资源的访问控制。 相似文献
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《实验室研究与探索》2013,(11)
采用Lagrange方程建立了平面二级倒立摆的非线性动力学模型,将其在平衡位置附近进行线性化,得到系统在2个正交控制方向解耦的近似模型。根据最优控制理论设计了系统的线性二次最优调节器,并利用Visual C++6.0和Visual Basic 6.0实现了人机交互,实时控制在多媒体定时器中断服务函数内实现,自主搭建了一套平面二级倒立摆实验平台。系统成功实现稳摆控制,仿真及实验结果表明建立平面二级倒立摆解耦模型的合理性与控制算法的有效性。 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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唐芳 《读与写:教育教学刊》2008,5(6)
During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context. 相似文献