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IEEE Conference on Control Technology and Applications (CCTA)

作者： Tomonori Kato Kenji Kawashima Tatsuya Funaki Harus Laksana Gunter Toshiharu Kagawa Mechanical System Engineering Course Department of Monozukuri Engineering Tokyo Metropolitan College of Industrial Technology Shinagawa Tokyo Japan Precision and Intelligence Laboratory Tokyo Institute of Technology Yokohama Kanagawa Japan National Institute of Advanced Industrial Science and Technology AIST Tsukuba Central 3 National Metrology Institute of Japan Tsukuba Ibaraki Japan

The pressure regulator is a substantial element in a pneumatic system. A relief-type precision pressure regulator is commonly used in order to control the supply pressure of actively controlled pneumatic vibration isolator. In this paper, firstly, we propose a pneumatic pressure regulator that achieves precise pressure control and quick response. The regulator consists of an isothermal chamber, a servo valve, a pressure sensor, a quick response laminar flow sensor (QFS), and a pressure differentiator (PD sensor) which we have developed. Slight changes of pressure in the chamber can be detected by the PD sensor and it is fed back to the servo valve to maintain the pressure at a desired value. The effectiveness of the developed regulator was confirmed experimentally in comparison with commercially available pressure regulators. Then, the developed regulator was applied to an actively controlled pneumatic vibration isolation table, in order to regulate the supply pressure. The effectiveness of the developed regulator is also shown in the experiment, especially in terms of avoiding affection from the disturbance given upstream of the regulator.

关键词： Pressure control Vibration control Regulators Valves Servomechanisms Isolators Control systems Pneumatic systems Machinery Springs

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The Mimo Predictive Pid Controller Design

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Asian Journal of Control 2008年第4期4卷

作者： M.H. Moradi M.R. Katebi M.A. Johnson Department of Electronic and Electrical Engineering University of Strath-clyde Glasgow GI 1QE UK. Dr. Moradi is a Lecturer in the Department of Electronic and Electrical Engineering University of Bu-Ali Sina in Iran. He obtained the BSc and MSc in 1991 and 1993 from the Sharif University of Technology and Tarbiat Modarres University respectively. Dr. Moradi joined the Bu-Ali Sina University in 1993. In 2002 he obtained his PhD degree from the University of Strath-clyde Glasgow Scotland. His theoretical research interests include predictive PID control advanced classical control generalised predictive control system identification and fault monitoring robust control design computer networks and more recently control through networks. His industrial interests are in the areas of large-scale systems especially power systems and power plant modelling and control supervisory control and process control. Dr. Moradi has published a number of Journal and Conference papers. Dr. Katebi is a senior lecturer in the Department of Electronic and Electrical Engineering University of Strathclyde. His theoretical research interests are currently focused on Non-linear Control and Filtering for Complex Systems Autonomous Control Design System integration and Fault monitoring and Reconfiguration Plant Monitoring through the Internet Discrete Event Simulation Process Optimisation and Robust Control Design. The industrial research interests are in the area of Hot and Rolling for Steel and Aluminium Power Plant Modelling and Control Marine Control Systems Process Control and Wastewater Treatment Control. Dr Katebi is the author/co-author of four books and more than 150 papers and industrial reports. Professor Johnson's academic education began at Coventry University (1969) and continued under the supervision of Professor Greyham Bryant in the field of Control Systems at Imperial College London. He obtained the DIC MSc and PhD from Imperial College leaving for industry in 1978. Subsequent experience was in the

This paper is concerned with the design of Multi-Inputs and Multi-Outputs (MIMO) predictive PID controllers, which have similar performance to that obtainable from model-based predictive controllers. A new PID control structure is defined which incorporates the prediction of future outputs and uses future set point. A method is proposed to calculate the optimal values of the PID gains from generalised predictive control results. A decentralized version of the predictive PID controllers is presented and the stability of the closed loop system is studied. Simulation studies demonstrate the superior performance of the proposed controller compared with a conventional PID controller. The results are also compared with generalised predictive control solutions.

关键词： PID control design predictive PID MIMO controller optimisation

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Springback property of grain refined pure aluminum by ECAP method

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Keikinzoku/Journal of Japan Institute of Light Metals 2006年第12期56卷 728-729页

作者： Sakai, Takashi Takahashi, Ryosuke Furushima, Tsuyoshi Koyama, Jun-Ichi Department of Mechanical Engineering Takamatsu National College of Technology 355 Chokushi Takamatsu-shi Kagawa 761-8058 Japan Department of Mechanic Electrical System Engineering Advanced Course of Takamatsu National College of Technology Takamatsu-shi Kagawa Japan Tokyo Metropolitan University Hachioji-shi Tokyo Japan Amada Co. Ltd. Japan

No abstract available

关键词： springback bending ECAP method pure aluminum grained material single crystal

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Improved Modeling and Control of a PEM Fuel Cell Power system for Vehicles

Improved Modeling and Control of a PEM Fuel Cell Power Syste...

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IEEE Southeastcon

作者： Qiuli Yu A.K. Srivastava Song-Yul Choe Wenzhong Gao Department of Electrical and Computer Engineering and Center for Advanced Vehicular System Mississippi State University USA Department of Electrical and Computer Engineering Mississippi State University USA Department of Mechanical Engineering Aubum University USA

This paper presents an improved nonlinear dynamic modeling and control of a proton exchange membrane (PEM) fuel cell stack power system for vehicle applications. The PEM fuel cell system considered includes a fuel tank, supply manifold, cooler and humidifier, fuel cell stack, as well as return manifold. The hydrogen and oxygen have been considered as fuels. The dynamic behavior of the flow path and stack is mainly described with three fundamental equations of mass conservation, nozzle flow, and continuity of isentropic flow. An improved empirical model is employed for the fuel cell system and have been simulated using MATLAB/Simulink. Simulation result shows that the stack pressure and flow rate affects the stack performance in terms of output voltage and currents. Thus, it is crucial to find an optimal control strategy for the pressure that facilitates a control of the output power according to power demand of a load. A new control strategy has been proposed and simulated in conjunction with the fuel cell stack and system models for vehicle applications

关键词： Power system modeling Fuel cells Power system control Power systems Fuel cell vehicles Mathematical model Power system dynamics Vehicle dynamics Optimal control Nonlinear dynamical systems

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Human systems integration and advanced technology in engineering department workload and manpower reduction

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NAVAL ENGINEERS JOURNAL 2003年第1期115卷 57-65页

作者： Lively, KA Seman, AJ Kirkpatrick, M KENNETH A. LIVELY graduated from the University of Colorado with a BS in applied mathematics and an MS in mathematics in 1976 and from the Massachusetts Institute of Technology with an MS in electrical engineering and the degree ocean engineer in naval architecture and marine engineering in 1984. He retired from the U.S. Navy in 1989 after 23 years of service. Assignments included electrical officer on the USS Constellation (CV 64) project engineer for the DDG 51 machinery control system (NAVSEA) and DDG 51 Technical Director (NAVSEA). He was vice president of the PDI Division of Bird-Johnson Company from July 1989 to November 1998 where he managed various gas turbine and machinery controls related development projects. He joined Anteon Corporation's Systems Engineering Group as senior controls engineer in December 1998 where he provided technical support to the integrated power systems program (NAVSEA PMS 510) and managed the Office of Naval Research Afloat Laboratory. DR. MARK KIRKPATRICK is currently an independent consultant in human factors and work-load/manning analysis and modeling. He holds a Ph.D. degree in experimental psychology from The Ohio State University and has 34 years of experience in applied human factors. From 1982 through 2000 Dr. Kirkpatrick served as the senior vice president of Carlow International. Prior to joining Carlow in 1982 Dr. Kirkpatrick served as a member of the technical staff at North American Rockwell's Missiles Division and as a project director and vice president for Essex Corporation. His areas of expertise include workload simulation task analysis operator-in-the-loop simulation human performance experimentation statistical analysis and human factors T&E. He has directed and/or participated in human factors projects for the U.S. Navy U.S. Army NASA Department of Transportation the U.S. Nuclear Regulatory Commission and private industry. ANTHONY J. SEMAN III is the technical manager for the reduced ship's crew by virtual presence (RSVP) advanced technology d

Aboard current ships, such as the DDG 51, engineering control and damage control activities are manpower intensive. It is anticipated that, for future combatants, the workload demand arising from operation of systems under conditions of normal steaming and during casualty response will need to be markedly reduced via automated monitoring, autonomous control, and other technology initiatives. Current DDG 51 class ships can be considered as a manpower baseline and under Condition III typical engineering control involves seven to eight watchstanders at manned stations in the Central Control Station, the engine rooms and other machinery spaces. In contrast to this manning level, initiatives such as DD 21 and the integrated engineering plant (IEP) envision a partnership between the operator and the automation system, with more and more of the operator's functions being shifted to the automation system as manning levels decrease. This paper describes some human systems integration studies of workload demand reduction and, consequently, manning reduction that can be achieved due to application of several advanced technology concepts. advanced system concept studies in relation to workload demand are described and reviewed including. Piecemeal applications of diverse automation and remote control technology concepts to selected high driver tasks in current DDG 51 activities. Development of the reduced ship's crew by virtual presence system that will provide automated monitoring and display to operators of machinery health, compartment conditions, and personnel health. The IEP envisions the machinery control system as a provider of resources that are used by various consumers around the ship. Resource needs and consumer priorities are at all times dependent upon the ship's current mission and the availability of equipment pawnbrokers.

关键词： Naval warfare

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Trajectory planning for hand-over between human and robot

Trajectory planning for hand-over between human and robot

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IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： S. Kajikawa E. Ishikawa Department of Mechanical Engineering Miyagi National College of Technology Natori Miyagi Japan Advanced Course of Production System Engineering Miyagi National College of Technology Natori Miyagi Japan

In the future, there will be many cases where robots should perform cooperative tasks with humans in daily life. We focus on a hand-over motion as an example of cooperative work between a human and a robot, and propose an algorithm which enables a robot to perform a human-like motion. First we analyze trajectories and velocity patterns of a hand-over motion performed by two humans. From this experimental results we notice that a receiver's motion, during hand-over has some typical characteristics. We then confirm that a human-like motion can be generated using these characteristics. Finally, we plan the robot's motion considering these results. Initially, two kinds of potential fields are used to generate a motion command which leads the robot along a trajectory similar to that followed by the human. In addition, more precise motion is considered at the end of the hand-over operation to guarantee accurate positioning and to soften the shock of contact. Experimental results using 2-link planar robot arm show the validity of the proposed method.

关键词： Trajectory Humans Humanoid robots Motion planning Collaborative work Pattern analysis Performance analysis Motion analysis Character generation Robot motion

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A stratospheric Stationary LTA platform concept and ground-to-vehicle microwave power transmission tests 37th

A stratospheric Stationary LTA platform concept and ground-t...

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37th Aerospace Sciences Meeting and Exhibit, 1999

作者： Onda, Masahiko Kaya, Nobuyuki Fujita, Masaharu Fujino, Yoshiyuki Tomita, Kazumasa Yamada, Mamoru Mechanical Engineering Laboratory A.I.S.T. M.I.T.I. Tsukuba Japan Dept. Of Computer and System Engineering Kobe University Kobe Japan Communications Research Laboratory Ministry of Posts and Telecommunications Tokyo Japan Advanced Engineering Services Corp. Tsukuba Japan

Conducted in 1995 in Kobe, a low altitude flight demonstration test of a 10% scale model of the proposed high-altitude platform represents a novel microwave powering system. An unmanned 340 m3 LTA was able to hover at an altitude of 50 m. For the duration of the test, the airship's tandem motors and on-board systems were powered solely by ground-to-air microwave transmissions. The ground transmitter was a 10 kW parabolic antenna. The rectenna, power-absorbing antenna was a lightweight composite unit, and was positioned directly on the underside of the LTA. 2.45 GHz microwaves were transmitted. Tracking of the LTA for microwave beaming was performed manually, with the aid of tracking cameras and monitors. In this configuration, the LTA successfully hovered for a few minutes, though much longer durations are expected to be easily achievable. Overall efficiency of the power transmission process was estimated at about 50%. © 1999 The American Institute of Aeronautics and Astronautics Inc. All rights reserved.

关键词： Microwaves

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A new method on judgement of static stability for the quadruped robot

A new method on judgement of static stability for the quadru...

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IEEE International Conference on systems, Man and Cybernetics

作者： Xuedong Chen K. Watanabe K. Izumi Faculty of Computer Science and System Engineering Graduate School of Science and Engineering USA Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Japan Faculty of Science and Engineering Department of Mechanical Engineering Saga University Honjomachi Saga Japan

A new approach to analysis of robot stability is presented by defining the statically stable area for the foot placement. The proposed approach is applied not only to generate the free gait for a quadruped robot walking in difficult terrain, but also to judge the robot stability. The effectiveness of this method is demonstrated by a practical example.

关键词： Leg Robot kinematics Legged locomotion Foot Stability analysis systems engineering and theory Control engineering mechanical engineering

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Operational systems, logistics engineering and technology insertion

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 205-220页

作者： Grubb, MJ Skolnick, A Michael J. Grubb:has perfomzed naval engineering at the Crane Division Naval Surface Warfare Center (NSWC) for more than twenty-five years. He currently the program manager for the Sustainable Hardware and Affordable Readiness Practice Program (SHARP). is a Navy-wide logistics research and development prgram aimed at the successful transiton of proved technologies inot the fleet. SHARP focuses on reducing acquisition performance capability reliability maintainability and readiness of these systems. Mr. Grubb has served as a department director for the past eleven years. His most recent assignment was as director of the Tactical Computer Resources and Test Equipment Department. This organization provided acquisition and in-service engineering support of the Navy's tectical embedded computers priphirals displays and mass memory storage devices. The organization also provided a complete range of product engineering and metrology engineerig services for SSP NevSeaSysCom and the Trident Program. Prior to this appointment Mr. Grubb was deptuy director psysical security programs department and site responsible for program management and system integration of ashore integrated security systems. Mr. Grubb holds a B.S. degree in industrial engineering from Iowa State Universtiy an M.S. degree in industrial engineering from Purdue University and has copleted the course work (Dec.'96 for a master's degree in public and environment affairs at Indiana University-Purdue Univeristy Indianapolis. Dr. Alfred Skolnick operates System Science Consultants (SSC) specilizing in strategic planning technical program definiton technology assessment and engineering analyses on selected matters of national interest. He has taught physics mathematics and management sciences at University of Virginia and Marymount University and is currently adjunct professor of mathematics at Northern Virginia Community College. Form 1985 to 1989 he was president of the American Society of Noval Engineers. Dr. Skolnick served at Applied Physic

In an era of fiscal austerity, downsizing and unforgiving pressure upon human and economic capital, it is an Augean task to identify resources for fresh and creative work. The realities of the day and the practical demands of more immediate fleet needs can often dictate higher priorities. Yet, the Navy must avoid eating its seed corn. Exercising both technical insight and management foresight, the fleet, the R&D community, the Office of the Chief of Naval Operations (OpNav) and the product engineering expertise of the Naval Surface Warfare Center (NSWC) are joined and underway with integrated efforts to marry new, fully demonstrated technologies and operational urgencies. Defense funding today cannot sponsor all work that can be mission-justified over the long term because budgets are insufficient to support product maturation within the classical development cycle. However, by rigorous technical filtering and astute engineering of both marketplace capabilities and currently available components, it is possible in a few select cases to compress and, in effect, integrate advanced development (6.3), engineering development (6.4), weapon procurement (WPN), ship construction (SCN), operation and maintenance (O&M,N) budgetary categories when fleet criticalities and technology opportunities can happily meet. In short, 6.3 funds can be applied directly to ''ripe gateways'' so modern technology is inserted into existing troubled or aging systems, sidestepping the lengthy, traditional development cycle and accelerating practical payoffs to recurrent fleet problems. To produce such constructive results has required a remarkable convergence of sponsor prescience and engineering workforce excellence. The paper describes, extensively, the philosophy of approach, transition strategy, polling of fleet needs, technology assessment, and management team requirements. The process for culling and selecting specific candidate tasks for SHARP sponsorship (matching operational need with t

关键词： Naval vessels

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USING VIRTUAL ENVIRONMENTS IN THE DESIGN OF SHIPS

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NAVAL ENGINEERS JOURNAL 1994年第3期106卷 91-106页

作者： JONS, OP RYAN, JC JONES, GW Otto P. Jons:received a Diplom Ing. in shipbuilding from the Technical University of Hanover W. Germany and an MS in naval architecture and marine engineering from MIT. He then joined Litton Ship Systems where he was responsible for the preliminary design of the DD-963 hull structure and then for ship system integration as manager LHA ship systems engineering department. From 1972 to 1974 he was the principal research scientist at Hydronautics. In 1974 as technical director he helped establish the Crystal City office of Designers and Planners. Mr. Jons was one of the co-founders of Advanced Marine Enterprises Inc. in 1976 where he serves as corporate vice president engineering. J. Christopher Ryan:earned his bachelors and masters degrees in naval architecture from Webb Institute and MIT respectively. He spent three years at the advanced marine technology division of Litton Industries working on the DD-963 class ship design and related computer aided design projects. He subsequently went to the Navy Department concentrating on early stage design of surface combatants for twelve years including work on the FFG-7 Sea Control Ship CSGN and CVV aircraft carrier projects. He then shifted focus and became the Technical Director for the Computer Supported Design Program in NavSea for five years. Mr. Ryan has served in several supervisory positions within the Ship Design Group in NavSea since that time. He is currently the director of the future ship concepts division. Gary W. Jones:graduated from the University of Tennessee in 1971 with a BS in mechanical engineering and followed up with graduate work at George Washington University and the University of Maryland. Mr. Jones was with the Naval Sea Systems Command from 1971 until 1988 where he was a naval architect in the submarine section of the hull form design division. In 1988 he was detailed to the Defense Advanced Research Projects Agency (DARPA) where he became the program manager for the advanced submarine technology program's hydrodynamic hydroac

A major contributor to the expense and length of time to design, build, and test new systems has been the need to build and test hardware prototypes to determine their effectiveness in meeting operational requirements. Recent and dramatic advances in computer simulation technologies hold forth the promise of revolutionizing design and acquisition strategies by providing the means to validate end users' requirements prior to hardware construction. By designing and operationally testing virtual prototypes in a virtual environment, these technologies will soon offer naval architects the ability to build and launch ships in computer-based cyberspace in lieu of the shipbuilder's ways. The authors of this paper provide the background for these developments, explore the significance and ramifications of these technologies to the current process of ship and system design, outline challenges lying ahead, and present their vision and recommendations for future development.

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