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7th Internatonal Conference on Power Electronics, ICPE'07

作者： Kwon, Tae-Sung Song, Jun-Ho Lee, Jun-Bae Paek, Seung-Han Yong, Sung-Il Motion Control System Team Functional Power Group Fairchild Semiconductor 82-3 Dodang-Dong Wonmi-Gu Bucheon-Si Gyeonggi-Do Korea Republic of Dept. of Electrical Engineering Hanyang University 133-791 Haengdang-dong Sungdong-Gu Seoul Korea Republic of

ISBN: (纸本)9781424418725

This paper introduces a new Motion-SPM (Smart Power Modules)module in Single In-line Package(SIP), which is a fully optimized intelligent integrated IGBT inverter module for up to 1kW low power motor drive applications. This module offers a sophisticated, integrated solution and tremendous design flexibilty. It also takes advantage of pliability for the arrangement of heat-sink due to two types of lead forms. It utilizes non-punch-through (NPT) IGBT with a fast recovery diode and highly integrated building block, which features built-in HVICs and a gate driver that offer more simplicity and compactness leading to a reduced costs and high reliability of the entire system. This module also provides technical advantages such as the good thermal performances through IMS (Insulated Metal Substrate), the high latch immunity. This paper provides an overall description of the Motion-SPM in SIP as well as actual application issues such as electrical characteristics, circuit configurations and power ratings. © 2008 IEEE.

关键词： Insulated gate bipolar transistors (IGBT)

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Data modeling for content-based support environment (C-BASE): Application on epilepsy data mining

Data modeling for content-based support environment (C-BASE)...

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17th IEEE International Conference on Data Mining Workshops, ICDM Workshops 2007

作者： Siadat, Mohammad-Reza Soltanian-Zadeh, Hamid Fotouhi, Farshad Eetemadi, Ameen Elisevich, Kost Department ofComputer Science and Engineering Oakland University Rochester MI 48309 United States Radiology Image Analysis Lab. Henry Ford Health System Detroit MI 48202 United States Control and Intelligent Proc. Center of Excellence Dept. of Elec. and Comp. Eng. Univ. of Tehran Tehran 14395-515 Iran Department of Computer Science Wayne State University Detroit MI 48202 United States Department of Neurosurgery Henry Ford Health System Detroit MI 48202 United States

ISBN: (纸本)0769530192

Data Modeling is an essential first step for data preparation in any data mining procedure. Conventional entity-relational (E-R) data modeling is lossy, irreproducible, and time-consuming especially when dealing with unstructured image data associated with complex systems like the human brain. We propose a methodological framework for more objective E-R data modeling by eliminating the structured content-dependent metadata associated with the unstructured data. The proposed method is applied to epilepsy-related image data and a system called the human brain image database system (HBIDS) is developed accordingly. Supported with navigation, segmentation, data fusion, and feature extraction modules, HBIDS provides a content-based support environment (C-BASE). Such an environment potentially provides an unlimited (ad hoc) query support with a reproducible and efficient database schema. Switching between different modalities of data, while confining the feature extractors within the object(s) of interest, HBIDS yields anatomically specific query results. The price of such scheme is large storage requirements and relatively high computational cost. Examples of navigation through unstructured image data and content-based retrieval are presented in this paper. The results show the potential of HBIDS in content-based data management for decision support systems in real life medical applications. © 2007 IEEE.

关键词： Data mining

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control system DESIGN CONSIDERING A TRADEOFF BETWEEN EVALUATED UNCERTAINTY RANGES AND control PERFORMANCE

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Asian Journal of control 2008年第1期1卷

作者： Y. Wakasa Y. Yamamoto Dept. of Applied Analysis and Complex Dynamical Systems Graduate School of Informatics Kyoto University Kyoto Japan. Yuji Wakasa was born in Okayama Japan in 1968. He received the B.S. and M.S. degrees in engineering from Kyoto university Japan in 1992 and 1994 respectively. From 1994 to 1998 he was a Research Associate in the Department of Information Technology Okayama University. Since April 1998 he has been a Research Associate in the Graduate School of Informatics Kyoto University. His current research interests include robust control and control system design via mathematical programming. Yutaka Yamamoto received his B.S. and M.S. degrees in engineering from Kyoto University Kyoto Japan in 1972 and 1974 respectively and the M.S. and Ph.D. degree in mathematics from the University of Florida in 1976 and 1978 respectively. From 1978 to 1987 he was with Department of Applied Mathematics and Physics Kyoto University and from 1987 to 1997 with Department of Applied System Science. Since 1998 he is a professor at the current position. His current research interests include realization and robust control of distributed parameter systems learning control sampled-data systems and digital signal processing. Dr. Yamamoto is a receipient of the Sawaragi memorial paper award (1985) the Outstanding Paper Award of SICE (1987) Best Author Award of SICE (1990) the George Axelby Outstanding Paper Award of IEEE CSS in 1996 Takeda Paper Prize of SICE in 1997. He is a Fellow of IEEE. He was an associate editor of Automatica. He is currently an associate editor of IEEE Transactions on Automatic Control Systems and Control Letters and Mathematics of Control Signals and Systems. He is a member of the IEEE the Society of Instrument and Control Engineers (SICE) and the Institute of Systems Control and Information Engineers.

This paper presents a design method of control systems such that a designer can flexibly take account of tradeoffs between evaluated uncertainty ranges and the level of control performance. The problem is reduced to a BMI problem and approximately solved by LMIs. The convergence of the proposed approximation is proved in a modified sense. A numerical example shows the effectiveness of the proposed method in comparison with the standard robust control.

关键词： control system design LMI BMI tradeoff curves

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LANDING AN UNMANNED AIR VEHICLE: VISION BASED MOTION ESTIMATION AND NONLINEAR control

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Asian Journal of control 2008年第3期1卷

作者： Omid Shakernia Yi Ma T. John Koo Shankar Sastry Dept. of Electrical Engineering & Computer Science University of California at Berkeley Berkeley CA94720-1774 U.S.A. Tak-Kuen John Koo received the B.Eng. degree in 1992 in Electronic Engineering and the M.Phil. in 1994 in Information Engineering both from the Chinese University of Hong Kong. From 1994 to 1995 he was a graduate student in Signal and Image Processing Institute at the University of Southern California. He is currently a Ph.D. Candidate in Electrical Engineering and Computer Sciences at the University of California at Berkeley. His research interests include nonlinear control theory hybrid systems inertial navigation systems with applications to unmanned aerial vehicles. He received the Distinguished M.Phil. Thesis Award of the Faculty of Engineering The Chinese University of Hong Kong in 1994. He was a consultant of SRI International in 1998. Currently he is the team leader of the Berkeley AeRobot Team and a delegate of The Graduate Assembly University of California at Berkeley. He is a student member of IEEE and SIAM. S. Shankar Sastry received his Ph.D. degree in 1981 from the University of California Berkeley. He was on the faculty of MIT from 1980-82 and Harvard University as a Gordon McKay professor in 1994. He is currently a Professor of Electrical Engineering and Computer Sciences and Bioengineering and Director of the Electronics Research Laboratory at Berkeley. He has held visiting appointments at the Australian National University Canberra the University of Rome Scuola Normale and University of Pisa the CNRS laboratory LAAS in Toulouse (poste rouge) and as a Vinton Hayes Visiting fellow at the Center for Intelligent Control Systems at MIT. His areas of research are nonlinear and adaptive control robotic telesurgery control of hybrid systems and biological motor control. He is a coauthor (with M. Bodson) of “Adaptive Control: Stability Convergence and Robustness Prentice Hall 1989.” and (with R. Murray and Z. Li) of “A Mathematical Introduction to Robotic Manipulati

In this paper, we use computer vision as a feedback sensor in a control loop for landing an unmanned air vehicle (UAV) on a landing pad. The vision problem we address here is then a special case of the classic ego-motion estimation problem since all feature points lie on a planar surface (the landing pad). We study together the discrete and differential versions of the ego-motion estimation, in order to obtain both position and velocity of the UAV relative to the landing pad. After briefly reviewing existing algorithm for the discrete case, we present, in a unified geometric framework, a new estimation scheme for solving the differential case. We further show how the obtained algorithms enable the vision sensor to be placed in the feedback loop as a state observer for landing control. These algorithms are linear, numerically robust, and computationally inexpensive hence suitable for real-time implementation. We present a thorough performance evaluation of the motion estimation algorithms under varying levels of image measurement noise, altitudes of the camera above the landing pad, and different camera motions relative to the landing pad. A landing controller is then designed for a full dynamic model of the UAV. Using geometric nonlinear control theory, the dynamics of the UAV are decoupled into an inner system and outer system. The proposed control scheme is then based on the differential flatness of the outer system. For the overall closed-loop system, conditions are provided under which exponential stability can be guaranteed. In the closed-loop system, the controller is tightly coupled with the vision based state estimation and the only auxiliary sensor are accelerometers for measuring acceleration of the UAV. Finally, we show through simulation results that the designed vision-in-the-loop controller generates stable landing maneuvers even for large levels of image measurement noise. Experiments on a real UAV will be presented in future work.

关键词： Motion estimation computer vision based control unmanned air vehicle differential flatness

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Formation flight of multiple rigid body spacecraft

Formation flight of multiple rigid body spacecraft

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48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

作者： Udwadia, Firdaus E. Schutte, Aaron D. Lam, Try University of Southern California Los Angeles CA 90089-1453 United States Aerospace Corporation El Segundo CA 90009 United States Jet Propulsion Laboratory Pasadena CA 91109 United States Department of Aerospace and Mechanical Engineering University of Southern California Los Angeles CA 90089 United States Control Analysis Dept. Aerospace Corporation 2350 E. El Segundo Blvd. El Segundo CA 90245-4691 United States Outer Planet Mission Analysis Group Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena CA 91109 United States

ISBN: (纸本)1563478927

The control of multiple rigid body spacecraft in formation flight is explored in this paper. We propose a general control methodology based on the general equations of motion for constrained mechanical systems to solve the problem of formation flying with attitude requirements. Examples of formation flying rigid body spacecraft with various attitude requirements will be given about an oblate central body. The examples demonstrate the broad applicability and scalability of the method. The approach leads to a simple non-linear control methodology that allows exact control of both orbital and attitude dynamics. No linearization of the dynamics is required. The approach used reveals a systematic technique for controlling complex non-linear systems.

关键词： Spacecraft

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Recognition of grouping patterns in trademarks based on the gestalt psychology

IEEJ Transactions on Electronics, Information and Systems

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IEEJ Transactions on Electronics, Information and systems 2007年第6期127卷 844-853+5页

作者： Iguchi, Hiromasa Abe, Koji Misawa, Tadanobu Kimura, Haruhiko Daido, Yoshimasa Information and Control System Hitachi Ltd. 5-2-1 Oomika Hitachi-shi Ibaraki 319-1293 Japan School of Science and Engineering Kinki University 3-4-1 Kowakae Higashiosaka-shi 577-8502 Japan School of Management Tokyo University of Science 500 Shimokiyoku Kuki Saitama 346-8512 Japan Graduate School of Natural Science Kanazawa University Kakuma-cho Kanazawa-shi 920-1192 Japan Dept. of Info. and Comp. Sci. Kanazawa Ins. of Tech. 7-1 Ohgigaoka Nonoichi Ishikawa 921-8501 Japan Hitachi Ltd. Japan Kinki University Japan Tokyo University of Science Japan Kanazawa University Japan Kanazawa Institute of Technology Japan

According to the Gestalt principals, in this paper, we model features for measuring the attraction degree between couples of image components, and grouping areas in trademark images are recognized. This investigation would be used for content-based image retrieval from the view of mirroring human perception for images. The features of proximity, shape similarity, closure, and good continuation are extracted from every combination of two components in an image. After that, according to results of the judgments, a grouping pattern for the query is fixed. Besides, changing combination of the features, the proposed method can output plural grouping patterns. In the experiments, we have evaluated the proposed method on 74 test images comparing between outputs by the proposed method and grouping patterns for the test images obtained from results of questionnaires by 104 participants.

关键词： Pattern recognition

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Photoluminescence studies in modulation doped GaInNAs/GaAs multiple quantum wells

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physica status solidi c 2007年第2期4卷

作者： M. Yilmaz B. Ulug A. Ulug A. Cicek N. Balkan M Sopanen O. Reentilä M. Mattila C. Fontaine A. Arnoult Akdeniz University Faculty of Arts & Science Dept. of Physics Antalya Turkey University of Essex Dept. of Electronic System Engineering Colchester UK Helsinki Univ. Techno. Optoelect. Lab. POB 3500 Helsinki 02015 Finland Laboratory for Analysis and Architecture of System 7 avenue du Colonel Roche 31077 Toulouse Cedex 4 France

We report for the first time the temperature dependent PL spectra from GaInNAs/GaAs triple quantum wells, modulation doped with a 2-D carrier density of ∼3 × 10 11 cm –2 per well. The measurements were carried out at temperatures between 10 and 300 K. The results are analyzed using a Gaussian fitting technique which indicates variable nitrogen composition and/or well-width fluctuations in the wells. One of the most striking features of the results is the lack of the S-Shape temperature dependence of the PL peak energy that is commonly observed in undoped dilute nitride quantum wells and is attributed to exciton de-trapping, which screens the true temperature dependence of the energy gap. Our results compare well with the predictions of the Varshni equation. The temperature dependence of the PL intensity is used to obtain the thermally activated behaviour of the non-radiative recombination processes that appear to dominate at higher temperatures. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

关键词： 78.55.Cr 78.67.De

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A New Smart Power Module for Low Power Motor Drives

A New Smart Power Module for Low Power Motor Drives

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International Conference on Power Electronics

作者： Tae-Sung Kwon Jun-Ho Song Jun-Bae Lee Seung-Han Paek Sung-Il Yong Motion Control System Team Functional Power Group Fairchild Semiconductor 82-3 Dodang-Dong Wonmi-Gu Bucheon-Si Gyeonggi-Do KOREA Dept. of Electrical Engineering Hanyang University 133-791 Haengdang-dong Sungdong-Gu Seoul Korea

ISBN: (纸本)9781424418718;9781424418725

This paper introduces a new Motion-SPM (Smart Power Modules) module in Single In-line Package (SIP), which is a fully optimized intelligent integrated IGBT inverter module for up to 1kW low power motor drive applications. This module offers a sophisticated, integrated solution and tremendous design flexibilty. It also takes advantage of pliability for the arrangement of heat-sink due to two types of lead forms. It utilizes non-punch-through (NPT) IGBT with a fast recovery diode and highly integrated building block, which features built-in HVICs and a gate driver that offer more simplicity and compactness leading to a reduced costs and high reliability of the entire system. This module also provides technical advantages such as the good thermal performances through IMS (Insulated Metal Substrate), the high latch immunity. This paper provides an overall description of the Motion-SPM in SIP as well as actual application issues such as electrical characteristics, circuit configurations and power ratings.

关键词： motor drives motor power FRD inverter module heat sinks Power rating gate driver compactness

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Realizing the safe society/products and services: Progress in recording entrance/exit imaging "visual surveillance systems" "flapper gate"

Realizing the safe society/products and services: Progress i...

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作者： Takizawa, Masafumi Sato, Masahiro Marketing Promotion Dept. Facilities and Services Division NEC Networks and System Integration Corporation Control Engineering Dept. Facilities and Services Division NEC Networks and System Integration Corporation

Enforcement of the Personal Information Protection Law has quickly stimulated activities aimed at security enhancement. The NEC Networks & systems Integration Corporation is developing an integrated system to connect the existing "entrance/exit magament" system with the "tresspassing surveillance" and "image surveillance" systems. Its aim is to implement a system that can record entrances and exits together with images enabling the identification of actual persons. This paper introduces an outline of the flapper gates and image surveillance system that were exhibited at the last EXPO2005.

关键词： Management information systems

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An architecture for robot force and impact control

An architecture for robot force and impact control

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2006 IEEE Conference on Robotics, Automation and Mechatronics

作者： Ranko, Zotovic Ángel, Valera F. Pedro, García G. Ángel, Llosa G. Dept. of System Engineering and Control Universidad Politécnica de Valencia Camino de Vera s/n 46022 Valencia Spain

ISBN: (纸本)1424400244

An architecture for force and impact control is proposed. Its first objective is to control the robot in free motion until the contact with the environment is made. Next, it should make the transition to constrained as smooth as possible. Finally, it should switch to force control in order to assure the tracking of the force reference. An absolute priority is to protect the system against the dangerous peaks of force. Also, loss of contact should be avoided when possible. The performance is improved by taking care of the accumulation of elastic energy in the robot. Sampling period is changed depending on the state of the system. An experimental platform was developed in order to test the architecture. © 2006 IEEE.

关键词： Robotics

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