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SOME rOOT PrOPErTIES OF rECUrSIVE WEIGHTEd MEdIAN FILTErS

SIGNAL PrOCESSING 1991年第3期25卷 337-344页

作者： HAN, YG SONG, IH PArK, YS Research Group 3 Buchun R&D Center Semiconductor Business Samsung Electronics 82-3 Dodang-Dong Chung-Ku Buchun Kyunggi Korea Department of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) 373-1 Guseong Dong Yuseong Gu Daejeon 305-701 Korea Software 1 Lab. Operation Research Center Seoul ESS Korea Telecom 17 Umyum-Dong Sucho-Gu Seoul 137-140 Korea

The weights of weighted median and recursive weighted median filters have close relationship with the root signal characteristics of these filters. In this paper, we find a set of conditions on weights under which a recursive weighted median filter preserves monotone or locally monotone sequence and that under which any input sequence converges to a locally monotone sequence after a finite number of passes. We also find a set of conditions on weights under which the output of a recursive weighted median filter is the same as that of a recursive median filter.

关键词： rECUrSIVE WEIGHTEd MEdIAN FILTEr rOOT PrOPErTY WEIGHT VECTOr

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Application of a self-organizing fuzzy control to the joint control of a Puma-760 robot

Application of a self-organizing fuzzy control to the joint ...

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1990 IEEE International Workshop on Intelligent robots and Systems, IrOS 1990

作者： Koh, K.C. Cho, H.S. Kim, S.K. Jeong, I.S. Department of Production Engineering Korea Advanced Institute of Science and Technology P.O. Box 150 Chongryangri Seoul Korea Republic of Robotics R&D Team Samsung Electronics Co. Ltd. Suwon Korea Republic of

Utilization of the fuzzy self organizing control(SOC) algorithm for the control of robotic manipulators is becoming increasingly of interest. However, the control performance of the present self-organizing control(SOC) algorithm is often limited due to quantization of process variables and requires still too large amount of computation time to be executed within small sampling time. To improve these limitations this paper presents a combined control structure in which ' the conventional P-control law is used in parallel with a modified fuzzy SOC algorithm. To run the algorithm fast, the inference mechanism of the fuzzy rules is simplified by modifying the SOC algorithm in ]5). Addition of the P-control law is made in the feedforward path to guarantee stability at initial stage before the rules are completely created. To test the performance of the proposed control scheme and structure, a series of experiments were performed using a PUMA-760 robot. The experimental results show that the proposed structure can be effectively applied to the control of robot manipulators when implemented to the personal computer. © 1990 Institute of Electrical and Electronics Engineers Inc.. All rights reserved.

关键词： Personal computers

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An Adaptive Control of Nonlinear Time-Varying Hydraulic Servo Systems

An Adaptive Control of Nonlinear Time-Varying Hydraulic Serv...

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American Control Conference (ACC)

作者： H.J. Park H.S. Cho B.S. Hyun Precision Instrument R&D Center Samsung Aerospace Industries Limited South Korea Professor Department of Production Engineering Division of Mechanical Engineering Senior Research Engineer Korea Advanced Institute of Science and Technology Seoul South Korea

This paper deals with a velocity control of nonlinear hydraulic servo systems with time-varying parameters. An adaptive model following control algorithm is adopted to assign the desired dynamics regardless of the nonlinearity and time-varying feature of the system. To show the validities of the scheme. a series of simulation are performed for various design parameters.

关键词： Adaptive control Time varying systems Servomechanisms Valves Control systems Velocity control Nonlinear dynamical systems Fluid dynamics Temperature control Aerodynamics

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POLE ASSIGNMENT IN rOTATING-dISK VIBrATION CONTrOL USING COMPLEX MOdAL STATE FEEdBACK

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MECHANICAL SYSTEMS ANd SIGNAL PrOCESSING 1988年第3期2卷 225-241页

作者： BYUN, SW LEE, CW Precision Instrument R&D Center Samsung Aerospace Seoul Korea Department of Mechanical Engineering Korea Advanced Institute of Science and Technology Seoul Korea

Modal state feedback controls of rotating disk vibrations in real and complex fields are formulated and compared. Pole assignment in real modal space necessitates the simultaneous assignment of eigenvalues and eigenvectors to uniquely determine the feedback gain matrix. Pole assignment in complex modal space, however, uniquely determines the feedback gain matrix, because preservation of the isotropic nature in the uncontrolled and controlled modal systems only allows the assignment of the isotropic eigenstructure. The proposed complex modal control scheme reduces the order of the system to be dealt with. It also minimises the required control energy and the transient magnitudes of the state.

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AIr-CUSHION LANdING CrAFT NAVIGATION

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NAVAL ENGINEErS JOUrNAL 1985年第4期97卷 248-260页

作者： GrAHAM, Hr KIM, JC BANd, EGU FOWLEr, AW Herbert R. Graham:received his degrees of B.S. in 1951 and M.S. in 1958 in aeronautical engineering from the Massachusetts Institute of Technology and the California Institute of Technology respectively. He also attended the Harvard Graduate School of Business Administration. He is presently a task manager at TRW Inc. McLean Virginia responsible for landing craft air cushion (LCAC) engineering support. Since joining TRW in 1967 he has had several technical project management and system engineering responsibilities in amphibious ships transportation and energy. He was responsible for the preliminary engineering design and cost estimates for tracked air cushion vehicles (TACVs). He has been active in several professional societies including ASNE and served as vice-chairman Los Angeles Section American Institute of Aeronautics and Astronautics. John C. Kim:received his degrees of B.S. in electrical engineering Tri-State University 1959 M.S. in electrical engineering Michigan State University 1960 and Ph.D. in electrical engineering Michigan State University. He is presently a senior staff engineer with TRW Inc. McLean Virginia where his technical experience has included communications system engineering and navigation system analysis. Since joining TRW in 1969 he has held numerous positions including section head project manager and department manager. His previous employment includes E-Systems/Melpar Division and Honeywell. Dr. Kim has been active in the IEEE Washington Chapter activities which included secretary vice-chairman and chairman of Systems Science and Cybernetics Group. Edward G.U. Band:received a B.S. degree in mechnical engineering in 1946 and a D.I.C in aeronautical engineering in 1947 at the City and Guilds College of London University. In 1951 he received an M.S. degree from Stevens Institute of Technology in fluid dynamics. After a career in the aircraft industry in England Canada and the U.S.A. he spent several years teaching in Chile and at Webb Institute of Naval Archi

Air cushion vehicles (ACVs) have operated successfully on commercial routes for about twenty years. The routes are normally quite short; the craft are equipped with radar and radio navigation aids and maintain continuous contact with their terminals. Navigation of these craft, therefore, does not present any unusual difficulty. The introduction of air cushion vehicles into military service, however, can present a very different picture, especially when external navigation aids are not available and the craft must navigate by dead reckoning. This paper considers the problems involved when navigating a high-speed air cushion vehicle by dead reckoning in conditions of poor visibility. A method is presented to assess the ACV's navigational capability under these circumstances. A figure of merit is used to determine the sensitivity of factors which affect navigation such as the range of visibility, point-to-point distance, speed, turning radius and accuracy of onboard equipment. The method provides simplistic but adequate answers and can be used effectively to compare the-capability and cost of alternative navigation concepts.

关键词： AIr CUSHION VEHICLES

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AN advanced METHOdOLOGY FOr PrELIMINArY HULL FOrM dEVELOPMENT

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NAVAL ENGINEErS JOUrNAL 1984年第4期96卷 147-161页

作者： LIN, WC dAY, WG HOUGH, JJ KEANE, rG WALdEN, dA KOH, IY Wen-Chin Lin:heads the Ship Powering Division at the David Taylor Naval Ship R&D Center (DTNSRDC). Dr. Lin received his B.S. degree in mechanical engineering from the National Taiwan University in 1957. He was awarded his M.S. degree in naval architecture and Ph.D. in engineering science from the University of California at Berkeley in 1963 and 1966 respectively. From 1966 to 1969 he was employed by ESSO Research and Engineering Company to conduct marine hydrodynamic research for oil tankers and offshore structures. Since joining DTNSRDC in 1969 he has actively conducted and directed hydrodynamic research to advance naval ship design technology and improve ship performance. Active in national and international symposia on ship hydrodynamic research he is recognized for contributions to the ship research community. For the past six years he has been a member of the Performance Committee of the ITTC and currently serves as secretary of the committee. He is a member of SNAME and the Society of Naval Architects of Japan. William G. Day Jr:. has been employed as a naval architect at the David Taylor Naval Ship R&D Center since receiving a B.E.S. degree from the Johns Hopkins University in 1966. He obtained an M.S. E. degree from George Washington University in 1971. As Head Design Evaluation Branch of the Ship Performance Department he is responsible for model experiments to evaluate the hydrodynamic performance of ships and propulsors. He is a member of ASNE and SNAME. In-Young Koh:received his B.S. and M.S. degrees in electrical engineering from Lowell University in 1969 and 1971 respectively and his Ph.D. in applied mechanics from Rensselaer Polytechnic Institute in 1976. Dr. Koh joined DTNSRDC as an electronic engineer specializing in the application of advanced instrumentation and computer techniques to ship research and design. He is currently engaged in research and development of active control systems for naval ship applications. Dr. Koh is a member of ASNE SNAME and IEEE. David Andrew Walden:is

A ship design methodology is presented for developing hull forms that attain improved performance in both seakeeping and resistance. Contrary to traditional practice, the methodology starts with developing a seakeeping-optimized hull form without making concessions to other performance considerations, such as resistance. The seakeeping-optimized hull is then modified to improve other performance characteristics without degrading the seakeeping. Presented is a point-design example produced by this methodology. Merits of the methodology and the point design are assessed on the basis of theoretical calculations and model experiments. This methodology is an integral part of the Hull Form design System (HFdS) being developed for computer-supported naval ship design. The modularized character of HFdS and its application to hull form development are discussed.

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SHIP dESIGN ANd THE NAVY LABOrATOrY

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NAVAL ENGINEErS JOUrNAL 1981年第2期93卷 33-46页

作者： ELLSWOrTH, WM CLArK, dJ Mr. William M. Ellsworth:is graduate of the State University of Iowa from which he received B.S. and M.S. degrees in Engineering majoring in Fluid Mechanics. Upon graduation in 1948 he joined the Staff of the David Taylor Model Basin (DTMB) and during the following ten years held various positions in the Hydromechanics Laboratory. In 1958 he left his position as Head of the Towing Problems Branch and joined Cleveland Pneumatic Industries which later became Pneumo Dynamics Corporation (PDC). He was General Manager of PDC's Systems Engineering Division and in 1961 became a corporate Vice President. In 1964 he returned to DTMB where he became the Technical Manager of the Hydrofoil Development Program Office. In October 1969 he was appointed to his present position of Associate Technical Director for Systems Development and Head Systems Development Department David W. Taylor Naval Ship Research and Development Center. He is a licensed Professional Engineer in the state of Maryland an Honorary Life Member of ASNE and a Fellow of ASME. He also has been the author of a number of papers and reports in the field of Naval Engineering and has served as a member of the ASNE Council from 1972 to 1974 was a member of the ASNE Flagship Section Council (1977-80) and is currently a member of the ASNE Honors and Awards Committee. He became a member of ASNE in 1960 and received his Honorary Life Membership when he was awarded the ASNE Gold Medal for 1973 at ASNE Day 1974. Dennis J. Clark:received his Bachelor's degree in Civil Engineering from City College of New York in 1963. Upon graduating he joined DTMB's Structural Mechanics Laboratory where he worked on a number of full-scale trials of surface ships evaluating the structural integrity of icebreakers sonar domes and Hydrofoils. He eventually was responsible for the entire structural research program in support of the Hydrofoil Advanced Development Office and in 1971 joined the Hydrofoil Program Office as the Manager of Systems Integration. In that capacity he

In today's environment of rapidly escalating costs, increasing technological complexity, and growing threat, we must actively seek ways to improve our effectiveness in applying limited resources to the design of Navy ships. One important aspect of this process involves the development and application of new technology to ship design. An exhaustive treatment of this subject is clearly beyond the scope of a single technical paper. It is the Authors' objective, however, to acquaint the reader with the nature and role of the Navy's Laboratory Community in general and dTNSrdC in particular; to examine some recent initiatives taken at dTNSrdC and some key issues; and, hopefully, to contribute in some small way to the building of a stronger constructive partnership between ship development and design activities. The view is that from the perspective of a Navy Laboratory and pertains to the design of the ship itself as opposed to the weapons system.

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EPd Congress 2015 1

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丛书名： The Minerals, Metals & Materials Series

1000年

作者： James A. Yurko Antoine Allanore Laura Bartlett Jonghyun Lee Lifeng Zhang Gabriella Tranell Yulia Meteleva-Fischer Shadia Ikhmayies Arief Suriadi Budiman Prabhat Tripathy Guy Fredrickson

ISBN: (数字)9783319482149

ISBN: (纸本)9783319486093

EPd Congress is an annual collection that addresses extraction and processing metallurgy. The papers in this book are drawn from symposia held at the 2015 Annual Meeting of The Minerals, Metals & Materials Society. The 2015 edition includes papers from the following symposia: •Materials Processing Fundamentals •Solar Cell Silicon •High-Temperature Electrochemistry II

关键词： Metallic Materials Materials Engineering Mechanical Engineering

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real-Time Mobile Multimedia Services 1

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丛书名： Lecture Notes in Computer Science

1000年

作者： dilip Krishnaswamy Tom Pfeifer danny raz

ISBN: (数字)9783540758693

ISBN: (纸本)9783540758686

It is a great pleasure to present the proceedings of the 10th IFIP/IEEE International Conference on Management of Multimedia and Mobile Networks and Services (MMNS 2007). The MMNS 2007 Conference was held in San Jose, California, USA during October 31 – November 2 as part of the 3rd International Week on Management of Networks and Services (Manweek 2007). As in the previous three years, the Manweek umbrella allowed an international audience of researchers and scientists from industry and academia – who are researching and developing management systems – to share views and ideas and present their state-of-the-art results. The other events co-located with Manweek 2007 were the 18th IFIP/IEEE International Workshop on distributed Systems: Operations and Management (dSOM 2007), the 7th IEEE Workshop on IP Operations and Management (IPOM2007), the 2nd IEEE International Workshop on Modeling Autonomic Communications Environments (MACE 2007), and the 1st IEEE/IFIP International Workshop on End-to-End Virtualization and Grid Management (EVGM 2007). Under this umbrella, MMNS proved itself again as a top public venue for results dissemination and intellectual collaboration with specific emphasis on multimedia and mobility aspects of end-to-end services. These aspects of management are becoming a major challenge in the ability to deliver cost effective end-to-end multimedia-based services in the upcoming 4G wireless systems.

关键词： Computer Applications Computer Communication Networks Multimedia Information Systems Information Storage and retrieval User Interfaces and Human Computer Interaction Information Systems Applications (incl. Internet)

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