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1.
曹海红 《电子制作.电脑维护与应用》2022,(7):77-80
电力电子变流技术是电气自动化技术专业非常重要的专业技能,由于电路涉及大量原理及波形分析,许多学生感觉学习比较吃力,教师在组织课堂教学时也发现由于受硬件实验室条件限制,仅理论讲解很难达到教学效果,教师深感完成课程教学目标难度很大。本文以三相半波可控整流电路为例,详细介绍MATLAB软件中三相半波可控整流电路的建模方法,同时根据示波器的追踪波形直观高效的查找故障,优化参数。最后通过仿真运行可以看出与理论分析结果一致,可见使用MATLAB软件仿真使得复杂的电力电子电路系统的分析和设计变得更加容易和有效。 相似文献
2.
李慧敏 《数字社区&智能家居》2014,(13):3152-3155
相量分析法是电路分析过程中分析解决正弦稳态交流电路的重要方法。该文举例说明MATLAB符号计算引擎MuPAD在相量分析法中的应用。将MuPAD引人到电路分析中可以带来诸多好处:1)解决繁琐的复数计算及自动绘制相量图的问题;2)提高学习的兴趣和计算电路的效率;3)MuPAD为电路分析及电路分析提供了一个有效的辅助工具。 相似文献
3.
李慧敏 《数字社区&智能家居》2014,(5):3152-3155
相量分析法是电路分析过程中分析解决正弦稳态交流电路的重要方法。该文举例说明MATLAB符号计算引擎MuPAD在相量分析法中的应用。将MuPAD引人到电路分析中可以带来诸多好处:1)解决繁琐的复数计算及自动绘制相量图的问题;2)提高学习的兴趣和计算电路的效率;3)MuPAD为电路分析及电路分析提供了一个有效的辅助工具。 相似文献
4.
BOOST电源变换器原理与仿真 总被引:10,自引:0,他引:10
该文用稳态分析的方法对升压型DC/DC电源变换器的工作原理及主电路的参数选取作了理论上的分析 ,用Matlab的PowerSystemBlockset对理论分析的结果进行仿真校验 ,得到的结果与理论计算结果相符。用仿真的方法缩短了电路的设计、制作周期 ,减少了电路研制中的投入费用 相似文献
5.
该文用稳态分析的方法对升压型DC/DC电源变换器的工作原理及主电路的参数选取作了理论上的分析,用Matlab的Power System Blockset对理论分析的结果进行仿真校验,得到的结果与理论计算结果相符。用仿真的方法缩短了电路的设计、制作周期,减少了电路研制中的投入费用。 相似文献
6.
MATLAB语言以复数矩阵作为基本编程单元,具有强大的数值计算功能、图形表达功能及可视化的仿真环境。通过MATLAB提供的图形用户界面(GUI)设计与开发功能,设计开发GUI应用于电路分析和计算中,可以使复杂的计算变得非常简便,从而为电路分析提供了一个有效的辅助工具。 相似文献
7.
动态电路的一个特征是当电路的结构或元件的参数发生变化时,可能使电路改变原来的工作状态,转变到另一个工作状态,这种转变往往需要一个过程,在工程上称为过渡过程。本文以动态电路理论中一阶动态电路用三要素的方法分析计算、二阶以及二阶以上的动态电路用拉普拉斯变换分析求解为例,详述了如何分别运用MATLAB语言编程和应用Simulink模块的方法来对电路进行仿真分析和计算。结论表明,应用MATLAB可以使动态电路的分析和计算变得非常快捷、方便,从而为电路分析提供了一个有效的辅助工具。 相似文献
8.
本文阐述了利用MATLAB软件计算和分析电路系统,使用者只要告知计算机电路的结构和元件值就能计算得出结果。因而可以将精力集中在电路分析本身上,不再为数学方程的求解困扰,提高学习的效率。文章介绍了程序编写和建立Simulink仿真系统模型的方法和步骤,并结合学习过程中所碰到相关实例给出了相应的过程。 相似文献
9.
以三相电路的瞬时无功功率理论为基础,详细分析计算谐波电流的方法,并利用MATLAB仿真软件建立谐波电流检测的仿真模型,进行计算机仿真实验,仿真结果证明了该方法的正确性和可行性. 相似文献
10.
本文通过具体电路,分析了使用Matlab语言对稳态电路和动态电路进行计算的方法,并进行了说明。为电路分析课程的教学提供了一些做法和经验。 相似文献
11.
S. Shaw 《Journal of Computer Assisted Learning》1993,9(2):93-99
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. 相似文献
12.
European Community policy and the market 总被引:1,自引:0,他引:1
C. Lloyd 《Journal of Computer Assisted Learning》1993,9(2):86-91
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. 相似文献
13.
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。 相似文献
14.
Wayne O’Brien Author Vitae 《Journal of Systems and Software》2008,81(11):1997-2013
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. 相似文献
15.
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. 相似文献
16.
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 相似文献
17.
David Poole 《Computational Intelligence》1989,5(2):97-110
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. 相似文献
18.
Watts S. Humphrey 《Annals of Software Engineering》2002,14(1-4):39-72
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. 相似文献
19.
基于复小波噪声方差显著修正的SAR图像去噪 总被引:4,自引:1,他引:3
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。 相似文献
20.
R. NOSS 《Journal of Computer Assisted Learning》1987,3(1):2-12
Abstract This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development. 相似文献