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113th Annual ASEE Conference and Exposition, 2006

作者： Strangeway, Robert Chandler, Edward Brown, Roger Exworthy, Kenneth Fancher, Jeffrey Fleischman, Terry Hedges, Walter Hoppe, Patrick Lokken, Richard Martin, Thomas Merkel, Daniel O'Donnell, Michael O'Laughlin, Terry Porubsky, Mark Steker, Robert Tewalt, Timothy Milwaukee School of Engineering United States United States Medical College of Wisconsin Milwaukee WI United States Electrical Engineering Technology Program MSOE United States United States L-3 Communications Corp. United States Chippewa Valley Technical College United States United States Northeast Wisconsin Technical College United States Western Wisconsin Technical College United States Electronic Technologies Department United States Electronics and Electrical Engineering Technology Programs WWTC Fox Valley Technical College United States United States United States Gateway Technical College United States Milwaukee Area Technical College United States United States Green Bay WI United States Madison Area Technical College United States United States Electronics Technology Department United States Waukesha County Technical College United States

A two-plus-two transfer agreement structure in Electrical engineering technology (EET) has been established between eight two-year colleges in the Wisconsin Technical College System (WTCS) and Milwaukee School of engineering (MSOE). The EET programs at most of the two-year colleges are based on and overlap significantly with their electronics technology programs. This format creates a valuable opportunity for students: they may earn the AAS-EET degree, the AAS electronics technology degree, or both. The electronics technology and EET programs at the two-year colleges, despite distinct curricula, all meet common statewide core electronics standards as established by the Statewide electronics Leadership Team (SWELT) in the WTCS. All AAS-EET programs also meet entrance standards for the plus-two BS-EET (+2 BS-EET) program at MSOE. Two technical calculus courses and two advanced electronics bridge courses, which promote a successful student transition from the two-year AAS-EET programs into the +2 BS-EET program, were adopted by most of the two-year programs. The bridge courses are described in detail. The courses have also run at several two-year colleges via an instructional television system. A comparison of the performances of students from the first two years of the former four-year MSOE EET program and the first group of EET transfer students to MSOE under the transfer agreements was performed in the first EET course within the plus-two curriculum at MSOE. This comparison determined no performance difference, i.e., the preparations of both student groups were indistinguishable. Coordination among the WTCS AAS-EET programs and with the MSOE +2 BS-EET program is facilitated by regular statewide meetings of electronics faculty as well as other mechanisms. The transfer agreements are renewed annually to counter program drift and to enhance program evolution through input from multiple colleges and their industrial advisory committees. The performance of the transfer s

关键词： Electrical engineering

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A high - Speed reclosing operation with fault current limiter

A high - Speed reclosing operation with fault current limite...

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IASTED International Conference on Energy and Power Systems

作者： Fujita, Junya Iwatsuki, Toshiharu Yukita, Kazuto Hosoe, Tadashi Goto, Yasuyuki Ichiyanagi, Katsuhiro Hoshino, Yukio Yamamoto, Nobuyuki Sugimoto, Shigeyuki Avatchanakorn, Vichit Department of Electrical and Electronics Engineering Aichi Institute of Technology 1247 Yagusa Yachigusa Toyota Aichi 470-0392 Japan Research and Development Division Chubu Electric Power Co. Inc. 20-1 Kitasekiyama Ohdaka-cho Midori-ku Nagoya 459-8522 Aichi Japan Program in Computer Information Systems Assumption University ABAC Ramkhamhaeng Soi 24 Hua Mark Bangkok 10240 Thailand

ISBN: (纸本)0889865868

This paper proposes a new high-speed reclosing operation method to improve the stability in power system with the fault current limiter. From an angular velocity, a field system voltage and a phase of the generator, the proposed operation method calculates the optimum reclosing time domain. The fault current limiter is used the reactance type or the resistive type. The examination was carried out using the Inst. of Electrical Engineers of Japan one-machine infinite bus system model in order to demonstrate the effectiveness of the proposed method. The Impact Ver2.3 was used in the computer simulation.

关键词： Limiters

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Carrier confinement effect enhanced by AlGaN/GaN multi-quantum barrier in AlInGaN based high power blue-violet laser diodes

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Physica Status Solidi (C) Current Topics in Solid State Physics 2006年第6期3卷 2215-2218页

作者： Lee, Sung-Nam Cho, S.Y. Ha, K.H. Choi, K.K. Jang, T. Chae, S.H. Kim, H.K. Paek, H.S. Sung, Y.J. Sakong, T. Son, J.K. Ryu, H.Y. Kim, Y.H. Yoon, E. Nam, O.H. Park, Y. Photonics Program Team Samsung Advanced Institute of Technology Suwon Korea Republic of Communication Module Lab. Samsung Electronics Suwon Korea Republic of CSEL School of Materials Science and Engineering Seoul National University Seoul Korea Republic of

AlGaN/GaN multi-quantum barriers (MQBs) were firstly introduced into violet AlInGaN laser diodes with InGaN multi-quantum wells structure, resulting in drastic improvements in lasing performance. Comparing with conventional AlGaN single electron blocking layer (EBL), lower threshold current and higher slope efficiency at room temperature could be achieved by AlGaN/GaN multiquantum barrier. It can be explained that p-type AlGaN/GaN MQBs is more effective to suppress the overflow of electron than single p-type AlGaN EBL by the increase of effective barrier heights due to the quantum effect of MQB and the enhancement of p-type doping efficiency. Additionally, the strain effect in InGaN multi-quantum wells (MQWs) from single p-type AlGaN EBL can be reduced by forming the AlGaN/GaN super lattice structure. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

关键词： Aluminum gallium nitride

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Design of an ethernet based residential security system

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Computers in Education Journal 2005年第3期15卷 2-13页

作者： Vaidyanathan, Vijay Hobson, Adam Kamego, Stephen McKean, Jacob Van Allen, Russell Electronics Engineering Technology Program Department of Engineering Technology University of North Texas UNT Research Park 3940 N. Elm Denton TX 7620 Electronics Engineering Technology Program Department of Engineering Technology University of North Texas

Current home alarm systems are quite complicated in that they require the installer to spend large amounts of time for installation or have prior professional installation experience. In addition, programming the system is a non-trivial task and usually requires prior alarm system programming knowledge. This paper explains the design of an ethernet based residential security system that is controlled by a micro-controller and has LabVIEW for user interface. The system is easy to configure and install. The security system offers the same general features of currently available home alarm systems but with potential expandability.

关键词： Security systems

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Web-based real electronics laboratories

Web-based real electronics laboratories

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2005 ASEE Annual Conference and Exposition: The Changing Landscape of engineering and technology Education in a Global World

作者： Guran-Postlethwaite, Yolanda Pocock, David N. Dutton, David Electronics Engineering Technology Oregon Institute of Technology United States Electronics Engineering Technology Program OIT Campus Portland OR United States Analog Block Electronics Engineering Technology Department Oregon Institute of Technology Klamath Falls OR United States Graduate School Oregon State University United States

The introduction of web-based real electronics laboratories by Oregon Institute of technology (OIT) is discussed. Two sophomore-level laboratories experiments are available to OIT electronics majors to be run remotely over the the web, namely an operational amplifier (op-amp) lab, and a MOSFET lab. The MOSFET lab is an introductory experiment where the student is expected to measure the common-source ouput characteristics as a function of the input voltage. As the web delivery of laboratory courses will extend to other courses in the program, such as the digital courses, OIT is expected to develop more experiment boards and acquire more hardware systems.

关键词： World Wide Web

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An experimental setup to measure the conductivity of a solid or liquid sample utilizing multi-frequency LCR meter

An experimental setup to measure the conductivity of a solid...

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2005 ASEE Annual Conference and Exposition: The Changing Landscape of engineering and technology Education in a Global World

作者： Darayan, Shahryar Department of Engineering Technologies Texas Southern University United States Electronics Engineering Technology Program Texas Southern University United States

A computer-controlled automated data acquisition system is designed to measure the conductivity of the liquid (saline water) or the solid sample (rock saturated with saline water) in the frequency range 10 kHz to 2 MHz. The set-up is based on LCR (Inductor, Capacitor, and Resistor) multimeter and four-terminal sample holder system that was developed to reduce the contact resistance, to minimize any stray capacitance, and residual inductance associated with the test leads or the test fixture at high frequencies. However, the instrumentation calibration scheme cannot completely eliminate the aforementioned errors. In order to accomplish this, a calibration model is designed to compensate for the inherent error of the system. In this study, the conductivity of some samples was measured. The measured data was compared with conductivity provided by Society of Core Analysis Guideline (SCA-GL). The agreement between available data and experimental data is excellent.

关键词： Electric conductivity

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Nonlinear H∞ for spacecraft attitude control

Nonlinear H∞ for spacecraft attitude control

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作者： Shou, Ho-Nien Jan, Ying-Wen Department of Aviation and Communication Electronics Air Force Institute of Technology United States Mechanical Engineering Department National Space Program Office Taiwan

ISBN: (纸本)008045108X

This paper presents a nonlinear H∞ state feedback attitude control design method for spacecraft large angle maneuvers, which is subject to moment-of-inertia (MOI) uncertainty. Moreover, the operation of attitude maneuver is affected by external disturbances. The attitude control design thus employs a nonlinear H∞ method to achieve stability and robustness so that both MOI uncertainty and external disturbances can be accounted for. in the paper, a solution for robust spacecraft attitude control is conjectured and shown to satisfy the nonlinear H∞ criterion. This results in a nonlinear H∞ control law that is capable of robustly stabilizing the maneuver in the presence of external disturbance and spacecraft inertia uncertainty. The simulation results are presented to demonstrate the effectiveness of the proposed design method. Copyright © 2005 IFAC.

关键词： Attitude control

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NEC simulation of a bidirectional antenna using a probe excited elliptical ring

NEC simulation of a bidirectional antenna using a probe exci...

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2005 Fifth International Conference on Information, Communications and Signal Processing

作者： Chawanonphithak, Krittaya Phongcharoenpanich, Chuwong Krairiksh, Monai Program of Electronics and Telecommunication Technology Nakhon Ratchasima Rajabhat University Nakhon Ratchasima Thailand Faculty of Engineering Research Center for Communications and Information Technology King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand

ISBN: (纸本)0780392833

This paper describes the characteristics of a bidirectional antenna using a probe excited elliptical ring. Based on the waveguide principle, a design of elliptical ring cross section that yields the propagation in dominant mode can be chosen and clarified by Numerical Electromagnetic Code (NEC). The quarter wavelength probe can accomplish matching condition. Subsequently, a decision of the ring length that obtains the desired directivity as well as the efficient radiation pattern, standing wave ratio (SWR), polarization, and bandwidth can be found by simulation. To investigate the characteristics of the proposed antenna for applying at the base stations, the wired grid model must be constructed. Using NEC simulation, the antenna characteristics can be carried out. The antenna prototype is fabricated and tested to verify the validity of our design method and the usefulness in Thai Mobile system operated at the center frequency of 1.92 GHz, The proposed antenna radiating bidirectional beam is suitable for narrow and long path service area with simple configuration and cost effective. © 2005 IEEE.

关键词： Antennas

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Sparse KPCA for feature extraction in speech recognition

Sparse KPCA for feature extraction in speech recognition

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2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05

作者： Lima, A. Zen, H. Nankaku, Y. Tokuda, K. Kitamura, T. Resende, F.G. Nagoya Institute of Technology Department of Computer Science and Engineering Nagoya 466-8555 Japan Federal University of Rio de Janeiro Dept. of Electronics and Computer Engineering/EPoli Program of Electrical Engineering/COPPE Rio de Janeiro 21945-970 Brazil

ISBN: (纸本)0780388747

This paper presents an analysis of the applicability of Sparse Kernel Principal Component Analysis (SKPCA) for feature extraction in speech recognition, as well as, a proposed approach to make the SKPCA technique realizable for a large amount of training data, which is an usual context in speech recognition systems. Although the KPCA (Kernel Principal Component Analysis) has proved to be an efficient technique for being applied to speech recognition, it has the disadvantage of requiring training data reduction, when its amount is excessively large. The standard approach to perform this data reduction is to randomly choose frames from the original data set, which does not necessarily provide a good statistical representation of the original data set. In order to solve this problem a likelihood related re-estimation procedure was applied to the KPCA framework, thus creating the SKPCA. The experimental results show the efficiency of SKPCA technique with the proposed approach over the KPCA with the standard sparse solution using randomly chosen frames and the standard feature extraction techniques. © 2005 IEEE.

关键词： Speech recognition

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NONLINEAR H ∞ FOR SPACECRAFT ATTITUDE CONTROL

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IFAC Proceedings Volumes 2005年第1期38卷 49-54页

作者： Ho-Nien Shou Ying-Wen Jan Department of Aviation & Communication Electronics Air Force Institute of Technology Mechanical Engineering Department National Space Program Office

This paper presents a nonlinear H ∞ state feedback attitude control design method for spacecraft large angle maneuvers, which is subject to moment-of-inertia (MOI) uncertainty. Moreover, the operation of attitude maneuver is affected by external disturbances. The attitude control design thus employs a nonlinear H ∞ method to achieve stability and robustness so that both MOI uncertainty and external disturbances can be accounted for. In the paper, a solution for robust spacecraft attitude control is conjectured and shown to satisfy the nonlinear H ∞ criterion. This results in a nonlinear H ∞ control law that is capable of robustly stabilizing the maneuver in the presence of external disturbance and spacecraft inertia uncertainty. The simulation results are presented to demonstrate the effectiveness of the proposed design method.

关键词： moment-of-inertia uncertainty nonlinear robust control large angle attitude maneuver external disturbances

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