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Proceedings of the 1997 European conference on Design and Test

作者： Kazuo Iwama Sunao Sawada Kensuke Hino Hiroyuki Kurokawa Dept of Computer Science and Communication Engineering Kyushu University Japan Industria1 Instrumentation & Control Systems Department TOSHIBA Corporation Japan Research & Development JUSTSYSTEM Corporation Japan

ISBN: (纸本)9780818677861

Two major improvements, controlled fan-in and automated initial-circuit production, were made over the random generator of benchmark circuits presented at DAC'94. This is an important progress towards our goal of random benchmarking: more general and secure testing, increasing the naturality of random circuits by controlling their attributes, and obtaining test results by which the difference of performances under evaluation can be made clear.

关键词： automated initial-circuit production controlled fan-in random generator controlled attributes logic testing testing random benchmark circuits

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Emission and drivability tradeoffs in a variable cam timing SI engine with electronic throttle

Emission and drivability tradeoffs in a variable cam timing ...

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American control Conference (ACC)

作者： S.C. Hsieh A.G. Stefanopoulou J.S. Freudenberg K.R. Butts Control Systems Laboratory Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA Scientific Research Laboratory Ford Motor Company Limited Dearborn MI USA

Tradeoffs between low feedgas emissions and smooth brake torque are discussed in the context of an engine equipped with variable camshaft timing (VCT). The use of VCT lowers the generation of feedgas emissions but adversely affects the torque response. However, with the addition of an electronic throttle and knowledge of online torque, the tradeoffs between emissions and drivability in the VCT engine can be lessened; conventional (nonVCT) engine torque response can be achieved while simultaneously preserving most of the emissions benefits gained by using VCT.

关键词： computer aided manufacturing CADCAM Timing Engines Fuel economy Exhaust systems Actuators Torque control Laboratories Couplings

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Multilevel simulation of force XXI fire support operations

Multilevel simulation of force XXI fire support operations

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IEEE International Conference on systems, Man and Cybernetics

作者： J.A. Hamilton E.J. Sobiesk J.C. Deal Department of Electrical Engineering & Computer Science United States Military Academy West Point NY USA Command Control Communications Computers C4 Modernization Office of the Deputy for Information Systems Washington D.C. DC USA

Rapid advances in technology have greatly enhanced capabilities to acquire and attack targets. We argue that future fire support organizations will have to rapidly expand and collapse to support the increased tempo of 21st century warfare. Expert systems can be used in many places and may, at times, replace some personnel at some levels of the fire support hierarchy. New technology, an uncertain post-Cold War world and a declining force structure have made simulation a critical means for discovering and developing new doctrine. Military fire support channels are hierarchical, paralleling the maneuver units they support. In combat, these command levels operate simultaneously with varying levels of dependence and interaction. A multilevel simulation strategy is necessary to integrate different fire support echelons into the same simulation. This paper discusses how multilevel simulation can support the development of both Joint Vision 2010 and Force XXI fire support doctrine, and how expert systems may be used to facilitate the dynamic expansion and collapse of fire support organizations.

关键词： Fires Weapons Military computing Information systems Expert systems Computational modeling computer science Military communication Communication system control control systems

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computer Aided control systems Design for Hydraulic Drives

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IFAC Proceedings Volumes 1997年第4期30卷 359-364页

作者： B. Stein E. Vier Department of Mathematics and Computer Science (Prof. Dr. H. Kleine Büning) Knowledge-based systems University of Paderborn D-33104 Paderborn Germany. Phone: +49 (5251) 60 - 3348 Fax: +49 (5251) 60 - 3338 Department of Measurement and Control (Prof. Dr.-Ing. H. Schwarz) Faculty of Mechanical Engineering University of Duisburg D-47048 Duisburg Germany. Phone: +49 (203) 379 - 1583 Fax: +49 (203) 379 - 3027

The design of hydraulic control systems is a complex and time-consuming task that, at the moment, cannot be automated completely. Nevertheless, important design subtasks like simulation or control concept selection can be efficiently supported by a computer. Prerequisite for a successful support is a well-founded analysis of a hydraulic system's structure. The paper in hand contributes right here. It provides a systematics for analyzing a hydraulic system at different structural levels and illustrates how structural information can be used within the design process. A further central matter of this paper is the automatic extraction of structural information from a circuit diagram by means of graph-theoretical investigations.

关键词： Algorithms and Knowledge-based Software Tools for CACSD Structural Analysis of Hydraulic systems Graph Theory

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Influence of human engineering on manning levels and human performance on ships

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NAVAL ENGINEERS JOURNAL 1997年第5期109卷 67-76页

作者： Anderson, DE Oberman, FR Malone, TB Baker, CC David E. Anderson:has a bachelor of science degree in environmental engineering from Florida Technological University and a master's degree in environmental engineering from the University of Central Florida. He is a graduate of the Naval Sea Systems Command's Engineer-In-Training (EIT) Program. Mr. Anderson was instrumental in introducing the collective protection system (CPS) in the U.S. Navy developing the initial forward-fit package for the USS Gunston Hall and the engineering change proposal (ECP) for the USS Wasp. In 1990 he joined the Human Systems Integration (HSI) Division (SEA 55W5) where he was task leader for auxiliary ships. He is currently the HSI manager for the future technology variant of the SeaLift ship and the future carrier. Association of Scientists and Engineers 33rdAnnual Technical Symposium 26 April 1996. Fred R. Oberman:has B.A. and M.A. degrees from the University of Chicago and Loyola University (experimental psychology) and an M.S. degree in industrial engineering and operations research from Virginia Polytechnic Institute (VPI). He has more than 30 years experience in HSI management planning research analysis design and testing in government and private sector positions. He is currently responsible for NavSea HSI generic research and tool development efforts. He is responsible for Human Engineering Specifications and Standards (Commercial Hypertext) and is the NavSea 03D7 representative on HSI in Performance Specifications and for integration of HSI within Integrated Logistic Support (ILS). He has served as DoD HSI SubTAG chair and member of the Simulation and Modeling Test and Evaluation Display and Control Systems Human Computer Interaction Specifications and Standards and Systems Design Sub Tags as a member of the Society of Naval Architects and Marine Engineers (SNAME) Systems Safety Panel and a member of NATO RSG 14 on man-machine analysis. Thomas B. Malone: CHFEP received a Ph.D. in experimental psychology from Fordham University in 1964. He is president of Carlow

The objectives of Human engineering (HE) are generally viewed as increasing human performance, reducing human error, enhancing personnel and equipment safety, and reducing training and related personnel costs. There are other benefits that are thoroughly consistent with the direction of the Navy of the future, chief among these is reduction of required numbers of personnel to operate and maintain Navy ships. The Naval Research Advisory Committee (NRAC) report on Man-Machine Technology in the Navy estimated that one of the benefits from increased application of man-machine technology to Navy ship design is personnel reduction as well as improving system availability, effectiveness, and safety The objective of this paper is to discuss aspects of the human engineering design of ships and systems that affect manning requirements, and impact human-performance and safety The paper will also discuss how the application of human engineering leads to improved performance, and crew safety, and reduced workload, all of which influence manning levels. Finally, the paper presents a discussion of tools and case studies of good human engineering design practices which reduce manning.

关键词： Human engineering

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Hot methanol extraction for the analysis of volatile organic chemicals in subsurface core samples from Dover Air Force Base, Delaware

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GROUND WATER MONITORING AND REMEDIATION 1997年第1期17卷 104-121页

作者： Ball, WP Xia, G Durfee, DP Wilson, RD Brown, MJ Mackay, DM William P. Ball is an assistant professor in the Department of Geography and environmental engineering at Johns Hopkins University (313 Ames Hall 3400 N. Charles St. Baltimore MD 21218). His research interests are in the physical and chemical processes that control contaminant fate in aqueous systems both in the natural environment and in engineered processes of treatment and remediation. Recent work has included both laboratory and computer modeling studies related to contaminant fate and transport in subsurface environments. Ball holds M.S. and Ph.D. degrees in environmental engineering and science from Stanford University and a B.S. degree in civil engineering from the University of Virginia. He is a registered pro-fessional engineer in the state of Virginia. Guoshou Xia is a Ph.D. candidate at Johns Hopkins University He was previously a lecturer in the Department of Civil Engineering at Southeast University in China. He received his B.S. degree in chemistry from Hefei University and his M.S. degree in environmental engineering from East China University of Chemical Technology. His current research interests are in the area ofsubsurface contaminant transport with emphasis on better understanding the nature of organic contaminant interactions with subsurface solids. Donald P. Durfee received his M.S. degree in environmental engineering from Johns Hopkins University in 1993 and is currently a Ph.D. student at Johns Hopkins. He is studying contaminant fate and transport in the subsurface and is also interested in site characterization and remediation issues. Ryan D. Wilson is a research associate and Ph.D. student in the Department of Earth Sciences at the University of Waterloo Waterloo Ontario. His research interests include field and modeling studies of semipassive remediation technologies and the behavior of gaseous tracers. Wilson received his B.Sc. in geology from the University of Alberta in 1987 and his M.Sc. in earth sciences (hydrogeology) from the University of Waterloo in 1993. Michael J. Br

The evaluation of contaminant concentrations in ground water and soil is an essential aspect of most hazardous waste remedial investigations. This paper describes methods applied toward obtaining, preserving, and analyzing subsurface samples for the determination of VOC concentrations in the saturated region of an unconfined coastal plain aquifer at Dover Air Force Base (DAFB), Delaware. The described protocol involved headspace-free subsampling of cores, field preservation of subsamples in methanol, and overnight extraction of the VOCs at elevated temperature (70 degrees C). Methanol-extracted compounds were subsequently transferred to hexane and analyzed by gas chromatography. The method was found to achieve quantitative extraction from the aquifer sands in a single step, although extraction from fine-grained and more strongly sorbing aquitard samples required multiple methanol extractions to achieve comparable recovery. An extensive set of DAFB results is presented as an indication of how these methods can be applied toward characterizing field-scale contamination with a high degree of resolution and accuracy. These data have enabled a quantitative estimate of the contaminant distribution at this site and offer valuable insight into processes of contaminant migration into the underlying aquitard. In these regards, the methods used are believed to have provided much more accurate results than could have been obtained using more commonly applied techniques.

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An advisory system for optimal switching of power-system capacitors

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EUROPEAN TRANSACTIONS ON ELECTRICAL POWER 1997年第2期7卷 121-128页

作者： Saha, S Tan, OT Christensen, JP Swapan Saha (1965) received his B.E. froin the University ofcalcutta. India. in 1988 M.Tech from Indian Institute of Technology. Kharagpur in 1990. MS from Louisiana State University. USA in 1992 and Ph.D. from Iowa State University. USA in 19%. all in electncal engineering. From 1990 to 1991 he worked ils a Research Engineer at the Energy Research Centre Rourkela. India for one and a half years. Since December 1995 he has been working at ABB Systems Conuol SantaClua USA. (ABB Systems Control 2550 Walsh Avenue Santa Clam California 95051 USA Tel + 14081987-6487 Fax + 14081987-6066) Owen T. Tan (1931) received his Ph.D. degree in electrical engineering from Eindhoven University of Technology. The Netherlands. He had six years of industrial experience before entering a university career. and is presently Professor of Electrical Engineering at Louisiana State University. Baton Rouge. LA. USA. His main research interest is in the area o f power bystems and electric machinery. He is a inember ofthe Royal Institute of Engineers. and Eta Kappa Nu. (Louisiana State University. Electrical and Computer Engineering Department. Baton Rouge. Louisiana 70803 USA. TeI + I 5 0413 88-56 29. Fax + I504/3 88-5200) John P. Christensen (1960) obtained his B.S. M.S. md Ph.D. degrees from the University of Illinois at Urbana-Champaign USA. receiving his final degree in 1988. (Louisiana State University Electrical md Computer Engineering Department. Baton Rouge Louisiana 70803 USA Tel + I5 04/3 88-56 29 Fax + 1504/388-5200) John P. Christensen (1960) obtained his B.S. M.S. md Ph.D. degrees from the University of Illinois at Urbana-Champaign USA. receiving his final degree in 1988. (Louisiana State University Electrical md Computer Engineering Department. Baton Rouge Louisiana 70803 USA Tel + I5 04/3 88-56 29 Fax + 1504/388-5200)

A methodology is presented to determine the optimal sequence of capacitor switching in a power system for maintaining a desirable voltage profile over a load cycle. In the first part of the algorithm, the set point voltage of the generators are determined by a non-linear secondary voltage controller that is emulated by a feedforward neural network. In the second part, these generator voltages constitute the starting point to determine the optimal switching of capacitors by using a dynamic program solver. The algorithm was validated on an IEEE 57 bus test system with the individual loads varying non-uniformly between 50% and 110% of their base values.

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Implementation of the velocities of the end-effector with the distributed arithmetic architecture

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JOURNAL OF INTELLIGENT & ROBOTIC systems 1996年第4期17卷 387-417页

作者： Grigoriadis, GK Mertzios, BG Automatic Control Systems Laboratory Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi Greece

The fast implementation of the linear and of the angular velocities of the end-effector of robotic manipulators, using the distributed arithmetic technique is described. The linear and angular velocities of the end-effector as well as the positional and the orientational Jacobian matrices is calculated by a cascade configuration of two pipelined arrays. The building blocks of the arrays are the distributed arithmetic-based circuits that implement the matrix-vector multiplications involved in the calculations. The digit-serial configuration of the proposed implementation of the linear and angular velocities of the end-effector is described, while the serial and the parallel configurations may result as special cases of the digit-serial configuration. The proposed distributed arithmetic computer architecture may be used in the real-time operation of the robot control system that requires the on-line computation of the position, of the linear and angular velocities of the end-effector and of the Jacobian matrix.

关键词： robot kinematics linear velocity angular velocity positional and orientational Jacobian matrices fast implementation pipelining distributed arithmetic and end-effector

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Internal force-based impedance control for cooperating manipulators

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IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION 1996年第1期12卷 78-89页

作者： Bonitz, RG Hsia, TC Systems Controland Robotics LaboratoryDepartment of Electrical and Computer Engineering University of California Davis CA USA

An internal force-based impedance control scheme for cooperating manipulators is introduced which controls the motion of the objects being manipulated and the internal force on the objects. The controller enforces a relationship between the velocity of each manipulator and the internal force on the manipulated objects. Each manipulator is directly given the properties of an impedance by the controller;thus, eliminating the gain limitation inherent in the structure of previously proposed schemes. The controller uses the forces sensed at the robot end effecters to compensate for the effects of the objects' dynamics and to compute the internal force using only kinematic relationships. Thus, knowledge of the objects' dynamics is not required. Stability of the system is proven using Lyapunov theory and simulation results are presented validating the proposed concepts. The effect of computational delays in digital control implementations is analyzed vis-a-vis stability and a lower bound derived on the size of the desired manipulator inertia relative to the actual manipulator endpoint inertia. The bound is independent of the sample time.

关键词： Impedance Force control Motion control Manipulator dynamics Velocity control Robot sensing systems End effectors Kinematics Stability Computational modeling

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Fast algorithms for basic processing and analysis operations on block-represented binary images

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PATTERN RECOGNITION LETTERS 1996年第14期17卷 1437-1450页

作者： Spiliotis, IM Mertzios, BG Automatic Control Systems Laboratory Department of Electrical and Computer Engineering. Democritus University of Thrace Xanthi 67100 Greece

This paper describes a binary image representation scheme, called Image Block Representation and presents new algorithms for a number of basic binary image processing and analysis operations, which are rapidly implemented on block-represented binary images. The main purpose of the Image Block Representation is to provide an efficient binary image representation that permits the execution of operations on image areas instead of image points.

关键词： image block representation image normalization image measurements logic operations

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