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IEEJ Transactions on Electronics, Information and systems 2006年第7期126卷 840-848页

作者： Obata, Masayuki Nishida, Takeshi Miyagawa, Hidekazu Kondo, Takashi Ohkawa, Fujio YASKAWA INFORMATION SYSTEMS Corporation 5-15 Higashiojimachi Yahatanishi-ku Kitakynshu 806-0037 Japan Department of Control Engineering Kyushu Institute of Technology 1-1 Senaui-cho Tobata Kitakyushu 804-8550 Japan Department of System Innovation and Informatics Kyushu Institute of Technology 680-1Ooaza Kawatsu lizuka 820-8502 Japan YASKAWA INFORMATION SYSTEMS Corporation Japan Kyushu Institute of Technology Japan

The outdoor service robot which we call OSR-01 is developed intending for cleaning up urban areas by means of collecting discarded trash such as PET bottles, cans, plastic bags and so on. We, in this paper, describe the architecture of OSR-01 consisting of hardwares such as sensors, a manipulator, driving wheels, etc. for searching for and picking up trash, and softwares such as fast pattern matching for identifying various trash and distance measurement for picking up via the manipulator. After describing the vision system in detail, which is one of the most critical parts of the trash collection task, we show the result of an open experiment in which OSR-01 collects PET bottles on a real shopping street in the special zone for robot research and development in Kitakyushu-city.

关键词： Robots

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Development status of small-scale test rocket engine

Development status of small-scale test rocket engine

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AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference

作者： Yoshida, Makoto Aoki, Hiroshi Fukuzoe, Moriyasu Naruo, Yoshihiro Niu, Kenichi Tomaru, Hiroshi 1 Koganezawa Kimigaya Kakuda Miyagi 981-1525 Japan Mitsubishi Heavy Industries Co. Ltd. 1200 Higashi-tanaka Komaki Aichi 485-8561 Japan Ishikawajima-Harima Heavy Industries Co. Ltd. 229 Tonogaya Mizuho-Machi Nishitama-Gun Tokyo 190-1297 Japan Rocket Engine System Section Rocket Engine Technology Center ISTA AIAA High-reliable System Design Section Rocket Engine Technology Center ISTA Office of Space Flight and Operations 2-1-1 Sengen Tsukuba Ibaraki 305-8505 Japan Department of Space Systems and Astronautics ISAS 3-1-1 Yoshinodai Sagamihara Kanagawa 229-8510 Japan Liquid Rocket Design Section Engine and Control Equipment Engineering Department Space Technology Group Research and Engineering Center

ISBN: (纸本)1563478188

A project to develop a small-scale test rocket engine, termed Pilot Engine, which aims at high reliability and high operability, is in progress. The purpose of this program is to demonstrate technical aspects such as integrated design methodology for highly reliable rocket engines, operation limit testing, and advanced engine simulation technology in a short period of time so as to make the most of the mobility of small size. The concept design has been finished for the 31kN Pilot Engine.

关键词： Project management

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Announcements, comments, and acknowledgments

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AIAA Journal 2006年第1期44卷 1-10页

作者： Oran, Elaine Kailasanath, Kazhikathra Aggarwal, Suresh K. Ahmadian, Mehdi Alexandrov, Natalia Auweter-Kurtz, Monika Bailly, Christophe Balachandran, Balakumar Berman, Alex Candler, Graham V. Chelliah, Harsha K. Chokani, Ndaona Fujii, Kozo Gaitonde, Datta V. Ghia, Kirti Karman N. Givi, Peyman Gore, Jay P. Kaplan, Carolyn R. Livne, Eli Lucht, Robert P. Messac, Achille Wing, N.G. Palazotto, Anthony N. Pierre, Christophe Plotkin, Allen Roy, Ajit K. Saigal, Sunil Sforza, Pasquale M. Shivakumar, Kunigal N. So, Ronald M.C. Springer, Anthony M. Anatolitumin, Anthony M. Zhong, Xiaolin United States Division of Computational Physics United States United States AIAA United States APS United States National Academy of Engineering United States Center for Reactive Flow and Dynamical Systems Naval Research Laboratory United States Institute of Physics Department of Mechanical Engineering University of Illinois at Chicago United States ASME Combustion Institute Department of Mechanical Engineering Virginia Polytechnic Institute State University United States Aeronautics Systems Analysis Branch NASA Langley Research Center United States SIAM ISSMO Aerospace Engineering Institute of Space Systems Universität Stuttgart Germany Amelia Earhart Italy International Amelia Earhart Award Committee Italy France France Mechanical Engineering University of Maryland College Park United States AAM SPIE ASA ASME Technical Committees of Multi-Body Systems Nonlinear Dynamics Dynamics and Control of Structures and Systems American Helicopter Society United States Aerospace Engineering and Mechanics University of Minnesota United States AIAA Thermophysics Technical Committee Mechanical and Aerospace Engineering University of Virginia United States AIAA Propellants and Combustion Technical Committee AIAA's Transition Study Group Aerodynamics Measurement Technology Technical Committee Thermophysics Technical Committee Japan MOSAIC project on the Technology Pressure-sensitive Paint Measurement System Japan High-Speed Flows Group Air Vehicles Directorate Air Force Research Laboratory Wright-Patterson Air Force Base United States Wright State University United States Aerospace Engineering and Engineering Mechanics United States United States Mechanical Engineering University of Pittsburgh United States School of Mechanical Engineering Purdue University United States Committee on Heat Transfer in Fire and Combustion Systems Japan Board of Advisors Central States Section Combustion Institute United States AIChE United States Tau Beta Pi United States

No abstract available

关键词： Institute of Space and Astronautical Science American Society of Mechanical Engineers Direct Numerical Simulation Aerospace engineering MDO Propellant Air Forces Aerodynamics Heterogeneous Combustion NASA Langley Research Center

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Environmentally-conscious substation systems designed in response to global warming

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Hitachi Review 2005年第4期54卷 179-184页

作者： Nagasawa, Kazuhiko Kato, Tetsuya Ito, Tomomichi Yamazaki, Tsuyoshi Signaling and Power Supply Systems Department Transport Management and Control Systems Division Industrial Systems Power Electronics Design Department Information and Control Systems Division Information and Telecommunication Systems First Department of Systems Research Hitachi Research Laboratory Industrial System Supervisory Department Kokubu Engineering and Product Division Hitachi Works

At The Third Session of the Conference of the Parties to the United Nations Framework Convention on Climate Change held in Kyoto in 1997, gases that contribute to global warming were specified, and since then the needs of society regarding environmental conservation have become more and more urgent. Aiming at meeting these needs in the field of railway systems, which are fundamentally benign to the global environment, Hitachi has developed various commercial transformer systems for railway use that contribute to further reduction of greenhouse-gas emissions. In particular, two key products were developed: a regenerative energy absorbing equipment for railway systems that use lithium-ion batteries like those applied in hybrid vehicles;and a completely sulphur hexafluoride (SF6)-gas-free, 72-kV dryair insulated switchgear unit that uses absolutely no SF6 gas (which has a high global-warming potential and has been conventionally used as the insulating medium in transformers). By applying these products, we have been able to construct an environmentally-friendly transformer system for electric railways.

关键词： Technical presentations

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B-system: New solution for seamlessly interconnecting track-side and on-board systems over network

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Hitachi Review 2005年第4期54卷 169-173页

作者： Koiwa, Hiroaki Ito, Satoru Matsuo, Masakazu Okura, Yoshinori Ishifuji, Tomoaki Ebata, Tomoichi System Solution Department Transportation System Division Industrial Systems Rolling Stock Electrical Systems Design Department Mito Transportation Systems Product Division Industrial Systems Transportation Control Systems Engineering Department Transportation Information Systems Division Information and Telecommunication Systems Systems Research Department Hitachi Research Laboratory Wireless Radio System Division Central Research Laboratory 4th Research Department Systems Development Laboratory

The fundamental concept of the ubiquitous information society is the ability to obtain needed information whenever and wherever one wants. In the context of enhanced railway passenger services, this means above all providing passengers with access to the network anytime and anywhere whether in railway stations or on-board trains. Equally important considering the greater intelligence of railcars themselves, is the need for more advanced on-board operating systems that are seamlessly connected to track-side systems. As a comprehensive rail system integrator, Hitachi has responded to these needs and at the same time contributed to more convenient and efficient rail systems through the development of a sophisticated broadband network system for trains - dubbed the B-system - that not only significantly increases the capacity of on-board networks but also supports seamless continuous interconnection between on-board and track-side systems.

关键词： Railroad transportation

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control of PWA systems using a stable receding horizon method

Control of PWA systems using a stable receding horizon metho...

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作者： Necoara, I. De Schutter, B. Heemels, W.P.M.H. Weiland, S. Lazar, M. Van Den Boom, T.J.J. Delft Center for Systems and Control Delft University of Technology Mekelweg 2 2628 CD Delft Netherlands Department of Electrical Engineering Control System Group Eindhoven University of Technology Netherlands Embedded Systems Institute Netherlands

ISBN: (纸本)008045108X

in this paper we derive stabilization conditions for the class of piecewise afffine (PWA) systems using the linear matrix inequality (LMI) *** take into account the piecewise structure of the system and therefore the matrix inequalities that we solve are less conservative. Using the upper bound of the infinite-horizon quadratic cost as a terminal cost and constructing also a convex terminal set we show that the receding horizon control stabilizes the PWA system. We derive also an algorithm for enlarging the terminal set based on a backward procedure;therefore, the prediction horizon can be chosen shorter, removing some computations off-line. Copyright © 2005 IFAC.

关键词： Linear matrix inequalities

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Multiple objective optimization in a spacecraft power system to maximize serviceability

Multiple objective optimization in a spacecraft power system...

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13th International Conference on Intelligent systems Application to Power systems, ISAP'05

作者： Momoh, James A. Kaili, Xu IEEE Center for Electrical System and Control Department of ECE Howard University Washington DC 20059 Department of Electrical and Computer Engineering Howard University Washington DC 20059 United States Center for Energy Systems and Control Electrial and Computer Engineering Howard University Washington DC 20059 United States

ISBN: (纸本)1599750287

Different from most power systems, the requirement for reliability of the power system on board a spacecraft is much more stringent. However, the reliability of the spacecraft power system can not be solely realized by increasing system redundancies due to limitations on mass. A Ring-Bus topology has been proposed for this purpose. This paper provides an analysis to this special topology, study selected critical possible failure scenarios and propose methods to maximize the serviceability of the system. A spacecraft power system is distinguished from most other system as it orbits around the earth. The primary source of the system is solar energy. Batteries save energy for ellipse time. To maximize the serviceability, the solar energy should be utilized most efficiently and the batteries should be strategically discharged to meet not only immediate load but anticipated load in the future. At the same time, the system should minimize current flows among different ring buses. Multiple objective functions are proposed and implemented in this paper based on different system operating conditions. The main goal is to maximize the serviceability of the system. The optimization result can be utilized to design controllers for the PV sources, loads and batteries. The proposed methods are tested on a Ring-Bus system. The testing result shows that the system can correctly determine its optimum operating strategy and corresponding control actions. © 2005 ISAP.

关键词： Electric power systems

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Dynamic modelling for condition monitoring of gas turbines: Genetic algorithms approach

Dynamic modelling for condition monitoring of gas turbines: ...

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作者： Breikin, T.V. Kulikov, G.G. Arkov, V.Y. Fleming, P.J. Control System Centre School of Electrical and Electronic Engineering University of Manchester Manchester M60 1QD United Kingdom Department of Automated Control Systems Ufa State Aviation Technical University K.Marx Street 12 Ufa 450000 Russia Department of Automatic Control and Systems Engineering University of Sheffield Mappin Street Sheffield S1 3JD United Kingdom

ISBN: (纸本)008045108X

The problem of model-based condition monitoring of aero gas turbine engines is considered. Genetic algorithms are applied for the dynamic modelling of aero engines by estimating parameters of the linear reduced-order model. The use of genetic algorithms affords flexibility in the choice of performance metrics. Real engine data is used to investigate the performance genetic algorithms and this approach is compared with traditional modelling techniques used in industry. Copyright © 2005 IFAC.

关键词： Genetic algorithms

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control OF PWA systems USING A STABLE RECEDING HORIZON METHOD

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IFAC Proceedings Volumes 2005年第1期38卷 123-128页

作者： I. Necoara B. De Schutter W.P.M.H. Heemels S. Weiland M. Lazar T.J.J. van den Boom Delft Center for Systems and Control Delft University of Technology Mekelweg 2 2628 CD Delft The Netherlands Department of Electrical Engineering Control System Group Eindhoven University of Technology Embedded Systems Institute

In this paper we derive stabilization conditions for the class of piecewise affine (PWA) systems using the linear matrix inequality (LMI) framework. We take into account the piecewise structure of the system and therefore the matrix inequalities that we solve are less conservative. Using the upper bound of the infinite-horizon quadratic cost as a terminal cost and constructing also a convex terminal set we show that the receding horizon control stabilizes the PWA system. We derive also an algorithm for enlarging the terminal set based on a backward procedure; therefore, the prediction horizon can be chosen shorter, removing some computations off-line.

关键词： piecewise affine system linear matrix inequalities model predictive control

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Correlation between time and frequency domain polarisation measurements for transformer moisture assessment

Correlation between time and frequency domain polarisation m...

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作者： Saha, T.K. Middleton, R. Thomas, A. School of Information Technology and Electrical Engineering University of Queensland School of Electrical Engineering and Computer Science University of Newcastle Department of Electrical Engineering School of Information Technology and Electrical Engineering University of Queensland Australia Engineers Australia University of Newcastle Centre for Complex Dynamic Systems and Control CRC Board of Governors IEEE Control System Society University of Queensland's School of Information Technology and Electrical Engineering

Preventative diagnosis and maintenance of transformers has become more popular in recent times in order to improve the reliability of electric power systems. A number of transformers have recently been tested using Return Voltage (RV) and Dielectric Dissipation Factor (tanδ) measurements in the time and frequency domain, respectively. This paper outlines a circuit model which describes the dielectric behaviour of the transformer insulation system and has been parameterised from the frequency domain data. This model was then used to simulate RV and Polarisation-Depolarisation current (PDC) results. Some recommendations about the diagnosis of the transformers have been proposed. © Institution of Engineers.

关键词： Electric transformers

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