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1.
异步电机矢量控制系统仿真研究   总被引:5,自引:0,他引:5  
异步电动机是一个高阶、非线性、强耦合的多变量系统.文中提出一种异步电动机矢量控制系统方案,并在此基础上设计了一个典型的矢量控制系统,然后利用matlab/simulink仿真软件对该控制系统进行建模与仿真研究.  相似文献
2.
虚拟制造及其关键技术   总被引:4,自引:0,他引:4  
论述虚拟制造的基本概念和类别,分析了虚拟制造的相关技术及关键技术。  相似文献
3.
Worked examples have been effective in enhancing learning outcomes, especially with novice learners. Most of this research has been conducted in laboratory settings. This study examined the impact of embedding elaborated worked example modeling in a computer simulation practice activity on learning achievement among 39 undergraduate students within a classroom environment. The students from one introductory forensic science course were randomly assigned to one of two groups that worked through computer-based simulations containing worked example modeling conditions presented in varied order. The computer software administered the modeled simulations, prior knowledge test, pretest, posttests, and a second domain test. Findings from this study suggest that embedded worked example modeling within practice simulations can be an effective method for transfer of learning with novice learners. This article describes the dissertation study completed by Debra K. Meier under the guidance of David W. Brooks at the University of Nebraska, Lincoln.  相似文献
4.
MATLAB/SIMULINK在电力电子技术课程教学中的应用   总被引:2,自引:0,他引:2  
为了提高教学质量,针对当前电力电子技术课程教学存在的一些问题;应用MATLAB/SIMULINK环境强大功能,对整流、斩波、逆变等几种常见电力电子电路进行建模仿真,观察电路波形,设置参数并观察参数变化对电路波形的影响;从而方便地研究器件的工作特性和电路的动态特性;本文介绍了该软件的结构、功能和设计方法。  相似文献
5.
我国东西部区域经济协调发展空间模型的模拟分析   总被引:1,自引:0,他引:1  
采用模拟的方法,分析我国东西部区域经济协调发展空间模型的有关变量变化对企业均衡和对两个区域社会经济的影响,根据东西部区域经济整合的不同阶段,对模型作了相应的调整,并分别对模型的几种不同情况及其相关结论进行了初步的探讨。指出通过东西部之间的区域整合来促进区域经济的协调发展,进而增加全社会的福利是完全可行的。  相似文献
6.
自动化课程教学中MATLAB的应用探讨   总被引:1,自引:0,他引:1  
自动化技术是一门集控制、系统、信号处理、电子和计算机技术于一体的综合技术,自动化专业课程既有独立性又有交叉性,教学中带来一定的难度。该专业的传统教学中存在着“老师难讲学生难学”的情况,主要是由于教学内容抽象,涉及面广,内容多,计算量大,作图量大,学生理解困难不容易掌握;如将MATLAB软件应用于传统教学的课程中,把过去大量的推导计算与图形绘制,利用现代的计算工具只需一个指令得到,解决教学复杂的问题;同时,将涉及内容用工具模块组建模型,进行控制系统实施动态仿真运行,在调整中体会控制效果,既形象又生动,学生易于掌握,从而为自动化课程的教学改革提供了广阔的前景。  相似文献
7.
CILT2000: Visualization and Modeling   总被引:1,自引:1,他引:0  
CILT2000 helped VisMod evolve from a collection of local and distinct research and development efforts into a solid field of education. Previous intellectual efforts focused around a) modeling and simulation tools, b) visual explanation tools, c) visual data analysis tools, d) exploring student needs in the context of VisMod, and e) exploring instructional frameworks for VisMod. These focus areas have evolved in two main trajectories, representing the evolution of the field, the generalization trend, which seeks to identify general principles and guidelines for designing learning environments, and the equitable application trend, seeking to use knowledge gained in the field to leverage education in general.  相似文献
8.
基于排队论医院仿真优化研究   总被引:1,自引:0,他引:1  
收集患者排队挂号时间和就诊等候时间,本文利用M/M/I/∞/∞和M/M/c/∞/∞两种排队模型进行分析,通过计算比较,M/M/c/∞/∞排队模型较合理,可以提高医院的服务效率和减少患者的就诊等候时间和就诊时间。对挂号室分层布置,完善了患者就诊流程,在患者的候诊区域设置辅助服务设施提高患者满意度。通过Flexsim系统仿真软件对新旧科室布局进行仿真比较,为医院改善布局提供依据。  相似文献
9.
Three-dimensional conceptual model for service-oriented simulation   总被引:1,自引:0,他引:1  
In this letter, we propose a novel three-dimensional conceptual model for an emerging service-oriented simulation paradigm. The model can be used as a guideline or an analytic means to find the potential and possible future directions of the current simulation frameworks. In particular, the model inspects the crossover between the disciplines of modeling and simulation, service-orientation, and software/systems engineering. Finally, two specific simulation frameworks are studied as examples.  相似文献
10.
Embodied design: constructing means for constructing meaning   总被引:1,自引:1,他引:0  
Design-based research studies are conducted as iterative implementation-analysis-modification cycles, in which emerging theoretical models and pedagogically plausible activities are reciprocally tuned toward each other as a means of investigating conjectures pertaining to mechanisms underlying content teaching and learning. Yet this approach, even when resulting in empirically effective educational products, remains under-conceptualized as long as researchers cannot be explicit about their craft and specifically how data analyses inform design decisions. Consequentially, design decisions may appear arbitrary, design methodology is insufficiently documented for broad dissemination, and design practice is inadequately conversant with learning-sciences perspectives. One reason for this apparent under-theorizing, I propose, is that designers do not have appropriate constructs to formulate and reflect on their own intuitive responses to students’ observed interactions with the media under development. Recent socio-cultural explication of epistemic artifacts as semiotic means for mathematical learners to objectify presymbolic notions (e.g., Radford, Mathematical Thinking and Learning 5(1): 37–70, 2003) may offer design-based researchers intellectual perspectives and analytic tools for theorizing design improvements as responses to participants’ compromised attempts to build and communicate meaning with available media. By explaining these media as potential semiotic means for students to objectify their emerging understandings of mathematical ideas, designers, reciprocally, create semiotic means to objectify their own intuitive design decisions, as they build and improve these media. Examining three case studies of undergraduate students reasoning about a simple probability situation (binomial), I demonstrate how the semiotic approach illuminates the process and content of student reasoning and, so doing, explicates and possibly enhances design-based research methodology.
Dor AbrahamsonEmail:
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