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1st European Dependable Computing Conference, EDCC-1 1994

作者： Park, Jae-Hyun Lee, Heung-Kyu Cho, Ju-Hyun Dept. of Computer Science Korea Advanced Institute of Science and Technology 373-1 Kusong-Dong Yusung-Ku Taejon305-701 Korea Republic of Control System Section Electronics and Telecommunications Research Institute P.O.Box 8 Taejon305-606 Korea Republic of

ISBN: (纸本)9783540584261

In this paper, we describe the fault tolerant schemes for the multistage interconnection network (MIN) and its fault diagnosis. Firstly, we present a fault tolerant MIN and a adaptive self-routing scheme for the network. It can provide more multiple paths than the previous networks between an input/output pair of a network by adding extra links between switching elements in the same stage and modifying the self-routing scheme of the regular MIN. The presented routing scheme is as simple as that of the regular MIN, which is based on the topological relationships among the switching elements (SE’s) that render a packet to the same destination with the regular self-routing. We present an algebraic proof to show the correctness of the scheme, and an analytic reliability analysis to provide quantitative comparisons with other some networks. Of the special notes is the finding that the network is more cost effective than the regular MIN and other augmented MIN’s in terms of the reliability. Secondary, we consider the fault models in the fault detection and the location schemes. We present a new fault diagnosis scheme for the network. © 1994, Springer Verlag. All rights reserved.

关键词： Failure analysis

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Visual guidance of an autonomous vehicle in natural environments based on reflexive control

Visual guidance of an autonomous vehicle in natural environm...

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IEEE Symposium on Intelligent Vehicle

作者： J. Fernandez A.B. Martinez J. Frau Automatic Control and Computer Engineering Department Universitat Poliltècnica de Catalunya Barcelona Spain Electronics Technology Section Universitat de les Illes Balears Palma de Mallorca Spain

Autonomous navigation in outdoor environments is a complex task that until today is realized with high cost systems. This paper presents a system for autonomous navigation in weakly structured and outdoor environments like mountain ways. The main goals are to design a robust, cheap and fast system. The proposed solution constructs a simple scene description by region segmentation and analysis of the region variation in a sequence of color images. Then, reflexive planning calculates a locally optimal travel direction from the available information.

关键词： Navigation Remotely operated vehicles Mobile robots Costs Robustness Layout Image segmentation Image analysis Image color analysis Image sequence analysis

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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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SHIPBOARD DAMAGED STABILITY ASSESSMENT - THE FLOODING CASUALTY control SOFTWARE

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NAVAL ENGINEERS JOURNAL 1993年第3期105卷 152-166页

作者： ZAHN, PB ROSBOROUGH, J CARLSTROM, R Peter B. Zahn:is a section chief in the Naval Architecture Department at Advanced Marine Enterprises. He is responsible for software development and special trials support. He has led the Flooding Casualty Control Software (FCCS) development effort since joining AME in 1989. He is also responsible for the material handling strikedown and stowage (MHS&S) software development program as well as special trials support for the ACVLAP and T-AGOS 19 programs. Prior to joining AME Mr. Zahn spent nine years with various companies of the ARCTEC Group. His experience includes field trials in venues from the Caribbean to the Bering Sea as well as model tests and engineering design and development efforts. Mr. Zahn received his B.S. in naval architecture and marine engineering from Webb Institute in 1980 and has published various papers on pollution prevention offshore systems and icebreaker design and performance. He is a member of ASNE and SNAME. John Rosborough:has been a naval architect for the Naval Sea Systems Command (NavSea) for the past 15 years. He is currently assigned to the Hydrodynamics Division with responsibility for aircraft carrier stability evaluations and as a task leader for computer-aided ship design development. In the Stability Division he was previously responsible for stability analyses on various amphibious ships SWATHs and foreign ships. He manages the upgrade and augmentation of SHCP at NavSea and is the Navy's technical point of contact for evaluating shipboard stability software and transitioning technology to the fleet. Mr. Rosborough received his B.S. in naval architecture and marine engineering from the University of Michigan in 1977. He is a member of USNI and the Association of Scientists and Engineers at NavSea. Richard Carlstrom:is a naval architect with Advanced Marine Enterprises. He has been responsible for software development in support of a variety of major programs including FCCS and SHCP and is a specialist in stability evaluations for complex ships such as CVs CVNs

The Flooding Casualty control Software (FCCS) was developed under the auspices of the Naval Sea Systems Command (NavSea) and is currently being deployed on a variety of ships in the neets of both the U.S. Navy and the U.S. Coast Guard. The primary objective of FCCS is to enable damage control personnel to identify critical stability conditions, especially when related to the loss of reserve buoyancy due to battle damage and the destabilizing effects of large quantities of firefighting water, in a timely manner. FCCS was initially deploved in 1990. It utilizes the standard algorithms of the Ship Hull Characteristics Program (SHCP). The user interface was designed to allow quick familiarity for shipboard users, primarily the damage control assistant (DCA) and his staff. Intact stability evaluations include the effects of topside icing, high winds, personnel crowding, heavy lifts over the side, high speed turns, and towing. FCCS also supports ballasting analysis for amphibious ships as well as providing bottom reaction and beached stability data for grounding incidents. Bv providing a tool for the ''fuel king'' and DCA to generate the required daily updates on the current ship load and liquids status, FCCS is assured of an accurate baseline in the event of damage. The design allows the evaluation of the ultimate ship stability status for a damage event using simple compartmentation and flooding status inputs. Evaluation of the adequacy of resulting stabilitv, as well as identification of such critical stability parameters as off center loading, margin line immersion, and negative GM, are accomplished by the program. Guidance is provided for the user to initiate appropriate flooding related damage control activities. Initially fitted on USS Oliver Hazard Perry Class frigates, FCCS databases have been for the USCG Hamilton class high endurance cutters, USS Arleigh Burke class Aegis destroyers, and a variety of other U.S. Navy and U.S. Coast Guard ship classes. The progra

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A three fingered, multijointed gripper for experimental use

A three fingered, multijointed gripper for experimental use

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1990 IEEE International Workshop on Intelligent Robots and Systems, IROS 1990

作者： Paetsch, W. Kaneko, M. Technical University of Darmstadt Department of Control Engeneering Control Systems Theory and Robotics Section Germany Kyushu Institute of Technology Computer Science and System Engeneering Kawazu 680-4 Iizuka820 Japan

A three fingered, multijointed robot gripper for experimental use is presented. The mechanics as well as the control architecture are designed for this special purpose. The gripper system provides the basic means in terms of position and force control to perform experiments about grasping and object motion in a useful way. The gripper will be used to develop and evaluate different approaches of stable grasping and object manipulation. First results of the control of the gripper on joint level as well as the cartesian behaviour of the fingers and some results and experiences with first grasping and manipulation experiments using the presented system are reported. © 1990 Institute of Electrical and Electronics Engineers Inc.. All rights reserved.

关键词： Grippers

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A three fingered, multijointed gripper for experimental use

A three fingered, multijointed gripper for experimental use

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EEE International Workshop on Intelligent Robots and Systems, Towards a New Frontier of Applications

作者： W. Paetsch M. Kaneko Department of Control Engeneering Control Systems Theory and Robotics Section Technical University of Darmstadt Germany Computer Science and System Engeneering Kyushu Institute of Technology Iizuka Japan

A three fingered, multijointed robot gripper for experimental use is presented. The mechanics as well as the control architecture is designed for this special purpose. The gripper system provides the basic means in terms of position and force control to perform experiments about grasping and object motion in a useful way. The gripper can be used to develop and evaluate different approaches of stable grasping and object manipulation. Results of the control of the gripper on joint level, the Cartesian behaviour of the fingers and some experiences with the grasping and manipulation experiments using the presented system are reported.< >

关键词： Grippers control systems Robot sensing systems Space technology Force control Fingers Orbital robotics Computational modeling computer simulation Grasping

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computer-SYSTEM ARCHITECTURE CONCEPTS FOR FUTURE COMBAT SYSTEMS

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NAVAL ENGINEERS JOURNAL 1990年第3期102卷 43-62页

作者： ZITZMAN, LH FALATKO, SM PAPACH, JL Dr. Lewis H. Zitzman:is the group supervisor of the Advanced Systems Design Group Fleet Systems Department The Johns Hopkins University Applied Physics Laboratory (JHU/APL). He has been employed at JHU/APL since 1972 performing applied research in computer science and in investigating and applying advanced computer technologies to Navy shipboard systems. He is currently chairman of Aegis Computer Architecture Data Bus and Fiber Optics Working Group from which many concepts for this paper were generated. Dr. Zitzman received his B.S. degree in physics from Brigham Young University in 1963 and his M.S. and Ph.D. degrees in physics from the University of Illinois in 1967 and 1972 respectively. Stephen M. Falatko:was a senior engineering analyst in the Combat Systems Engineering Department Comptek Research Incorporated for the majority of this effort. He is currently employed at ManTech Services Corporation. During his eight-year career first at The Johns Hopkins University Applied Physics Laboratory and currently with ManTech Mr. Falatko's work has centered around the development of requirements and specifications for future Navy systems and the application of advanced technology to Navy command and control systems. He is a member of both the Computer Architecture Fiber Optics and Data Bus Working Group and the Aegis Fiber Optics Working Group. Mr. Falatko received his B.S. degree in aerospace engineering with high distinction from the University of Virginia in 1982 and his M.S. degree in applied physics from The Johns Hopkins University in 1985. Mr. Falatko is a member of Tau Beta Pi Sigma Gamma Tau the American Society of Naval Engineers and the U.S. Naval Institute. Janet L. Papach:is a section leader and senior engineering analyst in the Combat Systems Engineering Department Comptek Research Incorporated. She has ten years' experience as an analyst supporting NavSea Spa War and the U.S. Department of State. She currently participates in working group efforts under Aegis Combat System Doctrin

This paper sets forth computer systems architecture concepts for the combat system of the 2010–2030 timeframe that satisfy the needs of the next generation of surface combatants. It builds upon the current Aegis computer systems architecture, expanding that architecture while preserving, and adhering to, the Aegis fundamental principle of thorough systems engineering, dedicated to maintaining a well integrated, highly reliable, and easily operable combat system. The implementation of these proposed computer systems concepts in a coherent architecture would support the future battle force capable combat system and allow the expansion necessary to accommodate evolutionary changes in both the threat environment and the technology then available to effectively counter that threat. Changes to the current Aegis computer architecture must be carefully and effectively managed such that the fleet will retain its combat readiness capability at all times. This paper describes a possible transition approach for evolving the current Aegis computer architecture to a general architecture for the future. The proposed computer systems architecture concepts encompass the use of combinations of physically distributed, microprocessor-based computers, collocated with the equipment they support or embedded within the equipment itself. They draw heavily on widely used and available industry standards, including instruction set architectures (ISAs), backplane busses, microprocessors, computer programming languages and development environments, and local area networks (LANs). In this proposal, LANs, based on fiber optics, will provide the interconnection to support system expandability, redundancy, and higher data throughput rates. A system of cross connected LANs will support a high level of combat system integration, spanning the major warfare areas, and will facilitate the coordination and development of a coherent multi-warfare tactical picture supporting the future combatant command st

关键词： computer Architecture

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An integrated AI environment for industrial expert systems

An integrated AI environment for industrial expert systems

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IEEE Proceedings of the International Workshop on Artificial Intelligence for Industrial Applications

作者： S. Kawakita M. Saito Y. Hoshino Y. Bandai Y. Kobayashi Computer Control Development Section Heavy Apparatus Engineering Laboratory Toshiba Fuchu Works Toshiba Corporation Fuchu Tokyo Japan

An integrated artificial intelligence environment for industrial expert systems geared toward practical operations is introduced. In terms of hardware, the AI environment comprises a process computer, an AI processor based on the RISC architecture with hardware extensions for AI languages, and an engineering workstation. Each component plays its part in close cooperation with the whole system. The end results is an ideal AI environment. In terms of software, a compiler-oriented approach is taken for both the expert system development tool and Lisp system. This allows high-speed inference with only a small memory requirement at run time. Performance estimation has revealed that the AI environment provides a sevenfold increase in execution speed over a process computer alone.< >

关键词： Artificial intelligence Expert systems Hardware Application software Electrical equipment industry Workstations Prototypes control systems computer industry Industrial control

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NTDS - A PAGE IN NAVAL HISTORY

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NAVAL ENGINEERS JOURNAL 1988年第3期100卷 53-61页

作者： SWENSON, EN MAHINSKE, EB STOUTENBURGH, JS Capt. Erick N. Swenson USNR (Ret.):is a project manager for special projects in the Surface Ship Systems Division Hughes Aircraft Company Fullerton Calif where he has been employed since his retirement from the U.S. Navy in 1975. Originally trained as an electronics technician during WWII in the Captain Eddy program he later received a BS degree in electrical engineering from the University of Rochester Rochester N. Y. in 1950. Subsequent engineering education was received at the University of Pittsburgh Pittsburgh Penn. and the Naval Postgraduate School Monterey Calif. After commissioning he was ordered to duty as the electronics division officer on the USSMissouri(BB-63) and electronics ships superintendent at Hunters Point Naval Shipyard San Francisco Calif. When the design of the Naval Tactical Data System began in the mid-1950s Lt. (j.g.) Swenson was ordered to the Bureau of Ships Navy Department Washington D.C. as the junior engineering duty only officer assigned to the project. From 1962 to 1965 LCdr. Swenson was assigned as the BuShips technical representative on the program at Remington Rand Univac St. Paul Minn. For the next ten years he returned to BuShips/NavSea/NAVSEC as the NTDS project officer. During this time the project expanded considerably foreign military sales were heavily involved and interoperability with other services and countries were established. His final effort on active duty was to instigate the redesign of the previousSpruanceclass destroyers into the newerAdmiral Kiddclass improvement program. He is a registered professional electrical engineer in the State of California listed inWho's Who in the Worldis a life member of ASNE and chairman of the Long Beach/Greater LA Section. Capt. Edmund B. Mahinske USN (Ret.):is an alumnus of the U.S. Naval Academy the Massachusetts Institute of Technology and the Harvard Business School. His technical background is in electronics and he specialized in the management of programs involving the application of comp

A little over thirty years ago, a group of naval engineers were assembled by the Bureau of Ships to develop a new system approach to the combat information center (CIC). The CIC of World War II, with its “grease pencil” plots and voice telling of tactical information from sensors and other ships, could no longer provide the timely, coordinated reaction to postwar threats. This project group led the Navy into the new world of large-scale, high-speed digital electronics and into a new mode of conducting naval warfare as well. There were no off-the-shelf computers of the requisite capability, size and reliability; what were available were monstrous vacuum tube computers. There were no display equipments that were “conversant” in both the digital language of the computer and the analog language of the sensors and the weapon systems. Who ever heard, at that time, of a computer running a tactical communication net automatically? It was hard enough to find sufficient numbers of engineers who knew what a digital computer was. This paper, by three naval engineers in the implementing engineering office, depicts the evolvement of the Naval Tactical Data Systems (NTDS) as they saw it. It discusses the problems that stemmed from the transition from the old world of analog into the new digital world, the system concepts that steered the development; the key decisions that were made; new electronic equipment and processes that became necessary; and the need of the mangagement to face the real world of deadlines, ship schedules and operational requirements.

关键词： NAVAL WARFARE

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Optimal and Adaptive control of Strip Temperature for a Heating Furnace in C.A.P.L.

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IFAC Proceedings Volumes 1987年第8期20卷 449-454页

作者： N. Yoshitani Process Computer Control Section Equipment Division Nippon Steel Corporation Nagoya Works Tokai City 476 Japan

The strip temperature control for a heating furnace is discussed. A new control has been developed at Nagoya Works. It is based on a new dynamic mathematical model which employs the fuel flow rate as a control signal. The unique feature of this control is a new control strategy, called the optimal preview control, to cope with future set changes (changes of strip width, thickness, or heat pattern). It determines the production line speed and the target trajectory of the strip temperature for future set changes. In order to control the temperature to this target trajectory, a self-tuning control with pole-placement was modified and introduced into a dynamic follow-up control. The plant parameters are estimated on-line by a least squares estimation with multiple and variable forgetting factors. The control has been successfully applied to an actual operating plant and has achieved excellent results.

关键词： Adaptive control Optimal control Parameter estimation Pole placement Self-tuning control Process control Steel industry Temperature control

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