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1.
板式换热器计算机模拟中采用的模拟算法有很多种,通过研究发现这些传统的数值迭代算法存在自身无法避免的缺陷。为克服这些缺陷,对遗传算法进行了研究,取得了将模拟问题中的数值迭代算法转化为最优化问题中的遗传算法的方法。通过实例模拟,符合实际情况,证明遗传算法在板式换热器模拟中是有效的、可靠的模拟算法。并通过对模拟结果的分析,绘制出了热、冷流体出口温度分别随热、冷流体流量变化的工况特性曲线图,直观地反映了板式换热器的工况特性,可为板式换热器最优化设计和动态分析提供技术依据。 相似文献
2.
针对测试汽车制动器优劣的模拟试验,建立数学模型,解决模拟载荷车轮转动惯量的计算,并提供了确定试验台电动机驱动电流的加权移动平均法、指数平滑法和增量PID控制法;给出评价试验的能量误差指标和收敛性指标,设计了电流值计算机控制的反馈补偿算法和时频变换算法。 相似文献
3.
黄黎明 《贵州教育学院学报》2011,(9):25-28
根据模拟退化算法具有并行性的特点,设计并实现了并行的模拟退火算法,同时以给出不同的初始温度,进行结果的模拟,体现出模拟退火算法的一个特征：初温越大,计算所花费的时间越大。 相似文献
4.
本文在深入系统地分析了L-systems模拟建模自然植物规律的基础上,将遗传算法引入到了L-systems当中。利用OpenGL图形图像处理技术,试验建模了遗传L-systems解释器;根据L-systems应用到自然生物模拟的特点,设计了遗传算法控制的L-systems成长策略,并优化了程序设计和算法效率。最后成功地模拟生成了人工植物的生长。 相似文献
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为了更好地研究MRI成像技术和图像重建算法,采用Matlab图形用户界面创建了MRI仿真平台。该平台模拟了线性、螺旋及并行扫描3种成像方式,可以导入不同模型图像,设计K空间扫描轨迹,模拟K空间数据采集过程,显示采集信号的波形。对这3种成像方式的图像重建加以实现,并对重建误差进行了分析。该平台为其它各种MRI数据采集和图像重建新算法的研究提供了一种有效工具。 相似文献
7.
结合状态机算法的基本原理设计出一个简单的饮料控制器,采用硬件描述语言VHDL得到控制器综合后对应的状态转换图描述、RTL级描述及底层门级结构,并对设计结果进行了模拟仿真验证。 相似文献
8.
IIR数字滤波器的设计 总被引：1，自引：0，他引：1
钱进 《长江工程职业技术学院学报》2001,(3)
利用发展相当成熟的模拟滤波器的理论、设计方法和严格的设计公式及现成的曲线、图表 ,按规定的技术指标求出模拟滤波器的Ha(S) ,按一定的转换关系将Ha(S)转换成数字滤波器的H(z) ,用一种算法编写软件利用通用计算机实现滤波或选用硬件组成专用计算机实现滤波 相似文献
9.
文章从学生在校进行图书借阅中存在的图书查询设备少、借阅时间有限、排队等候等问题入手,引导学生学习运用计算机解决问题的过程与方法,设计模拟图书查询算法,帮助学校师生解决图书查询中的低效问题;在设计解决问题中,落实"从生活实际出发,概述算法的概率与特征,运用恰当的描述方法和控制结构表示简单算法"的单元课标内容与学业要求以及... 相似文献
10.
为了更好地利用网络资源和解决网络拥塞,TCP拥塞控制算法至关重要。采用网络模拟工具NS模拟的方法,做了TCP拥塞控制的Tahoe、Reno和Vegas 3种算法的模拟实验,得到了3种算法的拥塞窗口、丢包率和吞吐量性能对比图,分析了3种算法的优缺点和适用性。 相似文献
11.
It is inevitable that as a result of progress in technology and the changes in the ways with which design is conceived, interior architecture schools should be updated according to these requirements and that new educational processes should be tried out. It is for this reason that the scope and aim of this study have been determined as being the formulation of a hybrid educational model for the integration of digital approaches to design within the interior architecture education system. Within the chosen scope and aim of this study, and as a methodology, various algorithmic and parametric approaches have been applied in various practical applications as digital design instruments, and conclusions have been reached concerning the advantages they offer within the design process. The advantages and disadvantages, concerning interior architecture education, of digital approaches to design over the traditional design method, have been presented on the basis of results found during practical applications of digital design, the information found in publications about this subject. A hybrid educational model for the restructuring with digital design instruments of interior architecture education and design studios as experimental areas has been presented. Thanks to this proposed model, the establishment of a computer formatted analytic design system in the guise of dynamic systems will get easier and, the opportunity of restructuring the process and conception of design will also present itself. As the effects of this method are reflected on the products, new geometric approaches and typologies will appear, with the result that designs and digital instruments will constantly be developed and will evolve. In conclusion, educating the designers of the future according to the essence of these approaches will make it possible to train professionals who correctly use and understand the technologies being developed, who have a critical stance, and who can produce renewable designs. 相似文献
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R. K. Shyamasundar 《Resonance》1997,2(10):17-28
In the previous articles, we had studied various topics such as algorithms, programs, programming languages, and algorithm design techniques. We shall now take a look at notions such as algorithmic universality, computability, incomputability and also discuss algorithmic limitations. 相似文献
13.
电池管理系统是新能源汽车的关键部件,对电池的安全可靠、有效使用和延长使用寿命等起到非常重要的作用。文章对电池管理系统的设计原理、控制策略、远程诊断进行了介绍,针对车辆运行过程中最容易出现的SOC估算问题进行研究,通过SOC的算法与实际运行工况结合建立了满足车辆运行需要的高精度SOC估算模型。 相似文献
14.
采用MATLAB语言对模拟通信系统中的线性调制系统进行了仿真,实现了各种模拟线性系统的可视化设计,通过本设计,可以直观地理解和领会模拟线性通信系统的基本原理。 相似文献
15.
可用性是软件工程与设计的核心理念,通常被称作"以用户为中心进行设计"的概念。文章利用HistCite软件对WOS数据库中以可用性和教育教学为主题的研究文献进行了量化分析,梳理了国际上教育领域内可用性研究文献时间分布,研究活跃地区、研究机构、载文期刊和重要文献等。在此基础上,通过分析该领域研究文献的引文编年图,揭示了教学可用性研究的发展历程和演进路径,并在此过程中列举了该领域的研究热点、前沿和发展趋势。 相似文献
16.
Computational thinking (CT) is a way of making sense of the natural world and problem solving with computer science concepts and skills. Although CT and science integrations have been called for in the literature, empirical investigations of such integrations are lacking. Prior work in natural selection education indicates students struggle to explain natural selection in different contexts and natural selection misconceptions are common. In this mixed methods study, secondary honors biology students learn natural selection through CT by engaging in the design of unplugged algorithmic explanations. Students learned CT principles and practices and applied them to learn and explain the natural selection process. Algorithmic explanations were used to scaffold transfer of natural selection knowledge across contexts through investigation of three organisms and the creation of generalized natural selection algorithms. Students' pre- and post-unit algorithmic explanations of natural selection were analyzed to answer the following research questions: (a) How do students' conceptions of natural selection change over the course of a CT focused unit? (b) What is the relationship between CT and natural selection in students' algorithmic explanations? (c) What are students' perspectives of learning natural selection with CT? Results indicate students' conceptions of natural selection increased and natural selection misconceptions decreased over the course of the unit. Within their post-unit algorithmic explanations, students used specific CT principles in conjunction with natural selection concepts to explain natural selection, which helped them to learn the details of the natural selection process and correct their natural selection misconceptions. Students indicated the use of CT in unplugged algorithmic explanations in different contexts helped them learn natural selection. This study shows unplugged CT can be used to teach students science content, and it provides an example for further CT and science integrations. Implications for the field are discussed. 相似文献
17.
Ben Jonson 《The International Journal of Art & Design Education》2002,21(3):246-253
This paper discusses the role of the sketch in design when freehand drawing is under pressure from digital image manipulation both in higher education and professional practice. Placed in a broad design context embracing experience, skill and knowledge, the meaning of ‘sketch’ is being explored against a background of past and current practices in analogue and digital media. Locating the sketch in the design process various analogue and digital relationships are presented, including speed and fidelity. It concludes that sketching can be seen as a form of visual improvisation independent of any particular drawing system that allows designers to explore the sketch both as a means of self–expression and a means of communication. 相似文献
18.
R. K. Shyamasundar 《Resonance》1997,2(3):16-32
In this article, we describe structured data types such as one dimensional arrays and illustrate the use of data structures in the development of searching and sorting programs.We illustrate an algorithmic design technique referred to asthe Divide-and-Conquer method and introduce an important and a prominent data structure calledtrees. 相似文献
19.
基于正态分布的异常入侵检测系统 总被引：1，自引：0，他引：1
蒲荣富 《阿坝师范高等专科学校学报》2006,23(3):118-120
通过提出了入侵检测的基本理论和系统构成,分析入侵检测技术并重点讨论了基于统计模型的入侵检测技术。根据概率论相关理论,构造了一个基于正态分布的异常入侵检测系统模型,在该模型的基础上进行了算法设计。算法简单易行、操作性强,具有较好的应用价值。 相似文献
20.
张小峰 《江西电力职业技术学院学报》2004,17(3):31-32
SolidWorks具有几何约束和尺寸驱动等参数化设计功能,且支持鼠标的动态拖动。利用此功能进行平面连杆机构原理性演示时,只用草图状态下的图线就可快速构建机构原型,并实现动态模拟,无需进行繁琐的三维实体造型及装配,也无需进行复杂的编程。 相似文献