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2003 GSW Proceedings最新文献

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Introducing Electromechanical Folk Art In Engineering Technology Programs 在工程技术专业中引入机电民间艺术
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38463
F. Attarzadeh
This paper presents the preliminary steps taken to introduce a course in Electromechanical Folk Art. The paper discusses the introduction of the idea to senior students enrolled in the Computer Engineering Technology Program at the University of Houston. The presentation included a 10-minute narrated slide show, highlighting the reasoning behind the proposed course, a demonstration of several electromechanical folk art gadgets developed by the author in support of the course, and a short survey completed by all students to assess the proposal’s feasibility. This paper also describes compilation and analysis of the surveys, the process by which support for the idea was secured from colleagues, the department chair, and the college dean, and other potential benefits of offering this course.
本文介绍了开设机电民间艺术课程的初步步骤。本文讨论了将这一理念引入休斯敦大学计算机工程技术专业的高年级学生。演讲包括一个10分钟的解说幻灯片,突出了建议课程背后的原因,展示了作者为支持课程而开发的几种机电民间艺术小工具,以及由所有学生完成的简短调查,以评估建议的可行性。本文还描述了调查的汇编和分析,从同事、系主任和学院院长那里获得支持的过程,以及开设这门课程的其他潜在好处。
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引用次数: 0
Virtual Experiment in Data Acquisition, Display, and Monitorin 数据采集、显示和监控中的虚拟实验
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38464
R. Bachnak, C. Steidley, Korinne Resendez
This paper describes a virtual experiment in data acquisition, monitoring, and processing. The experiment was recently implemented as part of establishing a virtual laboratory that allows engineering technology students to perform experiments online. A front panel in LabVIEW displays the results and permits remote monitoring and control of devices and storage of acquired data. A digital camera that provides real-time pictures of monitored equipment is included in the system configuration. Details about the system design and development along with its programming and testing are given.
本文介绍了一种数据采集、监测和处理的虚拟实验。该实验最近作为建立一个虚拟实验室的一部分实施,该实验室允许工程技术学生在线进行实验。LabVIEW中的前面板显示结果,并允许对设备进行远程监控和控制,并存储所获取的数据。在系统配置中包括一个提供被监控设备实时图像的数字摄像机。详细介绍了系统的设计与开发,并对其进行了编程和测试。
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引用次数: 4
Problems and Successes with NSF Scholarship Grant NSF奖学金的问题与成功
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38485
J. Gregory, A. Lawal, J. Rivera, L. Heinze, Gary Harris, D. Bagert
In an attempt to attract minority and first-generation college students to engineering, math, and computer science degrees, the National Science Foundation funded several Scholarship programs. Texas Tech University competed and received one of these grants. This grant has been a major benefit to minority students who met the qualifications. Initially all students had to be eligible for a Pell Grant or Title IV need if they went to graduate school. We had difficulty in finding students with this severe degree of financial need. This requirement was later relaxed, and we have been successful in finding qualified students to award scholarships.
为了吸引少数族裔和第一代大学生攻读工程、数学和计算机科学学位,美国国家科学基金会资助了几个奖学金项目。德克萨斯理工大学参加了竞争并获得了其中一项资助。这项助学金对符合条件的少数民族学生来说是一项主要福利。最初,所有学生如果去读研究生,都必须符合佩尔助学金或第四章的要求。我们很难找到有如此严重经济需求的学生。这一要求后来放宽了,我们已经成功地找到了合格的学生来颁发奖学金。
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引用次数: 0
An Educational Environment for Reinforcement of Dynamic System Modeling and Controls Concepts Utilizing MATLAB, xPC-Target and a Hardware in the Loop Magnetic Levitation Device 利用MATLAB、xPC-Target和硬件在环磁悬浮装置强化动态系统建模和控制概念的教学环境
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38513
P. Shiakolas, R. VanSchneck, D. Piyabongkarn, I. Frangeskou
Engineering education and especially hands on experience has been the focus of many studies. The experience and benefits associated with hands on experience using real hardware components as compared to virtual analysis using computer simulation tools are invaluable. In this paper, we present the development and use of an educational environment for experimentation and reinforcement of concepts found in dynamic system modeling and real-time controls in upper level undergraduate and graduate courses in engineering. This environment requires two computers, a host and a target that communicate through a serial protocol. The basic software tools (reside on the host) are the ubiquitous MATLAB along with Simulink, Real Time Workshop, xPC Target, and Visual C++ compiler. The hardware in the loop, HIL, device to be modeled and controlled is a custom developed magnetic levitation system that is nonlinear, open loop uns table and has time varying dynamics. A compatible data acquisition board (resides in the target) is required to provide the interface between the software and the device to be controlled. This environment provides for the development of various controllers and allows for direct comparison of their performance with hardware in the loop as shown in the presented examples.
工程教育,特别是实践教育一直是许多研究的焦点。与使用计算机仿真工具进行虚拟分析相比,使用真实硬件组件进行实际操作的经验和好处是无价的。在本文中,我们提出了一个教育环境的开发和使用,用于实验和强化在工程本科和研究生课程中发现的动态系统建模和实时控制的概念。这种环境需要两台计算机,一台主机和一台通过串行协议进行通信的目标。基本的软件工具(驻留在主机上)是无处不在的MATLAB以及Simulink、Real Time Workshop、xPC Target和Visual c++编译器。待建模和控制的硬件在环(HIL)装置是定制开发的非线性、开环无表且具有时变动力学的磁悬浮系统。需要一个兼容的数据采集板(驻留在目标中)来提供软件和被控制设备之间的接口。该环境提供了各种控制器的开发,并允许将其性能与所提供的示例中所示的循环中的硬件进行直接比较。
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引用次数: 0
ONLINE ANALYSIS OF A RANDOM SIGNAL USING COMPUTER AIDED SYSTEM 用计算机辅助系统在线分析随机信号
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38496
J. Keska, Raghavender Charupalli
This paper attempts to describe an effective experimental approach to determine the characteristics of the random signal detected in the two-phase flow. This is a Computer-aided data acquisition system reporting data acquisition and data logging of parameters like root mean square (RMS), time, power spectral density (PSD), histogram and probability distribution of a random signal generated by two-phase flow in a vertical channel. The system employs virtual instrumentation software LabVIEW and data acquisition board (DAQ). The measurement and control are accomplished and integrated into the process by using a computerized data acquisition system (DAQ) and comprehensive virtual instrument (VI), which was developed using the LabVIEW application software and DAQ board. In addition, this system allows for easy modification and enhancement of a virtual instrument by modification of the software program. the areas of Microelectromechanical Systems dynamics of complex heterogeneous mixtures (multiphase, slurries), tribology, microheatexchangers; computer-aided measurement systems of concentration, film thickness and viscosity; turbulence and flow pattern phenomena in mixtures, and analysis and validation of deterministic and random signals.
本文试图描述一种有效的实验方法来确定两相流中检测到的随机信号的特性。这是一个计算机辅助数据采集系统,报告了垂直通道中两相流产生的随机信号的均方根(RMS)、时间、功率谱密度(PSD)、直方图和概率分布等参数的数据采集和数据记录。该系统采用虚拟仪器软件LabVIEW和数据采集板(DAQ)。利用LabVIEW应用软件和DAQ板开发的计算机数据采集系统(DAQ)和综合虚拟仪器(VI),完成了测量和控制,并将其集成到过程中。此外,该系统允许通过修改软件程序轻松修改和增强虚拟仪器。复杂非均相混合物(多相、浆料)的微机电系统动力学、摩擦学、微热交换器等领域;浓度、膜厚和粘度的计算机辅助测量系统;混合物中的湍流和流型现象,以及确定性和随机信号的分析和验证。
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引用次数: 1
An Algorithm for the Digital Demodulation of an Interferometer 干涉仪数字解调的一种算法
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38507
Brandon D. Pitt, T. Tayag, M. L. Nelson
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引用次数: 0
Application of Signal Processing Tools in the Interpretation of 信号处理工具在解释中的应用
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38461
K. Rawat, Sumit R. Pal
Expensive to acquire and almost impossible to re-acquire, seismic reflection and refraction data sets are no doubt the most important assets of any hydrocarbon exploration and prospecting program. During exploration, seismic images of the earth’s shallow subsurface are scrutinized by interpreters, whose prerogative is to search for patterns indicating possible hyrdrocarbon reservoirs. One of the most striking features of these seismic signals is their highly non-stationary character, making such interpretations time-sensitive. Raw data sets need to be processed for time and depth corrections, posing some of the most challenging aspects of signal processing techniques, making use of relevant algorithms to eventually help extract the maximum possible information of the subsurface earth from each such data set. However, the tools for information extraction used until recently did not take into account the fundamental non-stationary character of seismic data, and the quality of information extraction suffered as a result. However, at present, high-resolution time-frequency representation technique provides a natural domain for analyzing and processing such non-stationary data. This technique can measure the local changes in frequency and scale content of a signal in the data set. In this paper we present the applications of this advanced signal processing and analysis technique to solve problems related to geophysical seismic data especially applicable to hydrocarbon exploration and prospecting. One of the latest digital signal processing tools is MATLAB (Matrix Laboratory), from MathCAD, which can be used to analyze, interpret, and process seismic data to specialized graphics features required in engineering and scientific practices. With the latest trends in research turning interdisciplinary, MATLAB acts as a perfect example to bridge between the domains of electrical engineering and geosciences.
地震反射和折射数据集的获取成本昂贵,而且几乎不可能重新获取,毫无疑问,它们是任何油气勘探和勘探项目中最重要的资产。在勘探过程中,地球浅层地下的地震图像由解释人员仔细检查,他们的特权是寻找表明可能的油气藏的模式。这些地震信号最显著的特征之一是它们的高度非平稳特征,使得这种解释具有时间敏感性。需要对原始数据集进行时间和深度校正,这是信号处理技术中最具挑战性的一些方面,使用相关算法最终帮助从每个这样的数据集中提取最大可能的地下地球信息。然而,直到最近使用的信息提取工具并没有考虑到地震数据的基本非平稳特征,因此信息提取的质量受到影响。而目前,高分辨率时频表示技术为分析和处理这类非平稳数据提供了一个自然的领域。该技术可以测量数据集中信号的局部频率变化和尺度内容。本文介绍了这种先进的信号处理和分析技术在解决地球物理地震数据问题中的应用,特别适用于油气勘探和勘探。最新的数字信号处理工具之一是MathCAD的MATLAB(矩阵实验室),它可以用于分析、解释和处理地震数据,以满足工程和科学实践所需的专门图形特征。随着跨学科研究的最新趋势,MATLAB成为电气工程和地球科学领域之间桥梁的完美范例。
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引用次数: 0
Experimental Results on Air-Water Heterogeneous Mixture in a Horizontal Square Channel 水平方形通道中空气-水非均质混合物的实验结果
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38457
J. Keska, M. Kolar
This research studies and analyzes the behavior of two-phase flow in a square channel measured by employing four different measurement methods. The spatial and temporal distribution of concentration in two-phase flow not only creates obstacles in detecting, measuring and description of flow patterns, but also creates even more difficulties in comparing the results achieved from different measurement systems, which creates the need for comparative studies by using four different measurement systems, i.e., capacitive, conductive, pressure and optical methods to measure characteristic parameters for controlled experimental conditions. The study deals with two-phase flow of air-water mixture in a small horizontal square. In this experiment, air and water are passed through a mixing chamber placed at the start of the square channel. The sensors are placed non-intrusively along the channel to measure the concentration of the two phases and the Computer Aided Experimentation Station (CAES) is used to generate a wide range of flow conditions and flow patters in the horizontal adiabatic flow, where the in-situ concentration, film thickness, and pressure are measured simultaneously in the same time and space for air-water mixture flow. The data were converted to averaged values, from which root mean square (RMS), histograms and power spectrum density plots were plotted. The analyses of the measured and plotted results will be compared and presented in this paper.
本文采用四种不同的测量方法对方形通道内两相流的特性进行了研究和分析。两相流中浓度的时空分布不仅给流型的检测、测量和描述造成了障碍,而且给比较不同测量系统所获得的结果带来了更大的困难,这就需要在受控的实验条件下,利用电容、导电、压力和光学四种不同的测量系统来测量特征参数进行比较研究。研究了空气-水混合物在小水平方形内的两相流动。在这个实验中,空气和水通过放置在方形通道开始的混合室。传感器沿通道非侵入式放置,测量两相的浓度,计算机辅助实验站(CAES)在水平绝热流动中产生广泛的流动条件和流型,在同一时间和空间同时测量空气-水混合流动的原位浓度、膜厚和压力。将数据转换为平均值,绘制均方根(RMS)、直方图和功率谱密度图。本文将对测量结果和绘制结果的分析进行比较和介绍。
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引用次数: 0
A Convergence Guaranteed Algorithm in Design of BJT Widlar Current Source Amplifiers BJT大电流源放大器设计中的收敛保证算法
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38503
Jiecai Luo, P. Bhattacharya
In the course of microelectronics, Widlar current source amplifiers are very important part of the class courseware. Specially, in design of BJT Widlar current source amplifiers for the given current and extra resistor, a student must solve a nonlinear equation to get desired current output and this turns out to be a difficult step in design. In this short paper, a new convergence guaranteed algorithm to solve the nonlinear equation is developed, some simulation results are also provided. With this new algorithm, students can easily do their design.
在微电子学课程中,Widlar电流源放大器是课堂课件的重要组成部分。特别是在设计给定电流和附加电阻的BJT - Widlar电流源放大器时,学生必须求解非线性方程才能得到期望的电流输出,这是设计中的一个困难步骤。本文提出了求解非线性方程的一种新的保证收敛的算法,并给出了一些仿真结果。有了这个新算法,学生可以很容易地进行设计。
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引用次数: 0
The Convergent Classroom for Best Practice Pedagogy in Chemical Engineering Education 化工教学中最佳实践教学法的融合课堂
Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38481
D. Cocke, J. Gossage, Emrah Alicli, Beytullah Misirli, Kuyen Li
77710 Abstract Evolving from an NSF supported activity to combine problem-based learning with modern computer based modeling and simulation is the convergent classroom that optimizes convergent technologies, content and best practice pedagogy. Convergent technologies involve computer based hardware and software, wireless networking, multimedia, hypermedia, Internet, virtual reality, interactive TV (iTV), digital TV (DTV), satellite and advanced classroom gadgetry. Convergent content combines conventional books, lecture notes, and video with digitally based information on CD’s and DVD’s, on-line laboratory experiments and demonstrations both locally and globally via the internet, internet based information resources, classroom recording of ideas from convergent and divergent thinking, discussions and group activities using visual, audio and text authoring software. The convergent classroom is allowing the same and new content to be presented via multiple ways on different platforms and to be saved for future use in digital asset banks and warehouses using multiple means of storage and use. Convergent best practice pedagogy is optimized in the convergent classroom to allow problem-based learning, objective based learning, cooperative learning, project based learning, accelerated learning, visual learning, constructivism and Socratic learning. The classroom is designed to optimize the five basic types of thinking: cognitive, memorative, convergent, divergent and evaluative - to produce the creativity and idea generative capacity often missing from conventional classrooms. The design and operation of the convergent classroom will be discussed, as well as how it is being used to optimize chemical engineering
77710摘要融合课堂是由美国国家科学基金会支持的一项活动演变而来,将基于问题的学习与基于现代计算机的建模和仿真相结合,它优化了融合的技术、内容和最佳实践教学法。融合技术包括基于计算机的硬件和软件、无线网络、多媒体、超媒体、互联网、虚拟现实、互动电视(iTV)、数字电视(DTV)、卫星和先进的教室设备。融合内容将传统的书籍、课堂讲稿和视频与CD和DVD上的数字信息、通过互联网在本地和全球进行的在线实验室实验和演示、基于互联网的信息资源、融合和发散思维的课堂记录、使用视觉、音频和文本创作软件的讨论和小组活动结合起来。融合教室允许相同的和新的内容通过多种方式在不同的平台上呈现,并通过多种存储和使用方式保存在数字资产银行和仓库中以备将来使用。课堂的设计是为了优化五种基本的思维类型:认知、记忆、收敛、发散和评估——以产生传统课堂所缺乏的创造力和思想生成能力。将讨论融合课堂的设计和运作,以及如何使用它来优化化学工程
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引用次数: 0
期刊
2003 GSW Proceedings
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