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19th Asilomar Conference on Circuits, systems and computers, ACSSC 1985

作者： Hsia, T.C. Lu, G.Z. Robotics Research Laboratory Department of Electrical and Computer Engineering University of California DavisCA95616 United States Department of Computer and System Science Nankai University Tianjin China

ISBN: (纸本)0818607297

The problem of simplifying the Lagrange dynamic equation of PUMA 600 robot manipulators is considered. By applying the numeric significance evaluation procedure to the symbolically expressed dynamic projection functions, a simplified PUMA arm model is obtained. This model is further optimized by adjusting the model parameters using a least squares error procedure. The simplified/optimized dynamic projection functions have approximation errors less than one percent. © 1985 IEEE.

关键词： Robot applications

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A METHODOLOGY FOR SETTING COMBAT system REQUIREMENTS

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NAVAL ENGINEERS JOURNAL 1985年第4期97卷 274-278页

作者： MENSH, DR The Author received his B.S. and M.S. degrees in applied physics from Loyola College in Baltimore Md. and the American University in Washington D.C. He also has completed his course work towards his Ph.D. degree in computer science specializing in the fields of system analysis and computer simulation. He has been employed at the Naval Surface Weapons Center White Oak Laboratory Silver Spring Md. for the past eighteen years in the areas of weapon system analysis and the development of weapon system simulations. Since 1978 he has been involved in the development of simulation tools that can be applied to the solution of shipboard combat system architecture and engineering problems. Currently at the White Oak Laboratory he is responsible for the application of and further development of the single ship combat system simulation.

This paper describes a methodology for setting combat system requirements for all ship classes. The requirements are determined from a battle group perspective. The methodology uses ship damage as a measure of effectiveness for setting combat system requirements. The ship damage data used was derived from the Navy tactical game (NAVTAG). The methodology that determines ship class combat system requirements consists of a set of logical steps that are iterative by design. It provides insight and valid estimates of numerical measures of defined force requirements at several levels. This process is not trivial; the expected level of effort could be significant. The method consists of five basic stages considered necessary to achieve valid results. These stages are (1) determination of force level requirements, (2) determination of force level capability, (3) analysis of force level capability, (4) determination of class requirements by battle overviews, and (5) determination of class requirements — overall. The methodology was used by the combat system master plan (CSMP) manager for determining top level combat system requirements for individual platforms in a battle group. In addition, once levels of combat system performance have been defined, this methodology generates a quantitative data base that becomes a useful tool in ship combat suite selection. Once alternate combat system suites have been defined, these suites can be analyzed in terms of combat system performance capability versus cost.

关键词： NAVAL WARFARE

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On Simplification Of Robot Arm Dynamic Equation

On Simplification Of Robot Arm Dynamic Equation

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Asilomar Conference on Signals, systems & computers

作者： T.C. Hsia G.Z. Lu Robotics Research Laboratory Department of Electrical and computer Engineering University of California Davis CA USA Department of Computer and System Science Nankai University Tianjin China

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ONLINE REAL POWER SCHEDULING IN MARGINALLY SECURE POWER-systemS

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IEEE TRANSACTIONS ON POWER APPARATUS AND systemS 1984年第4期103卷 869-873页

作者： NARASIMHAMURTHI, N Power System Laboratory Department of Electrical and Computer Engineering University of Michigan Ann Arbor MI USA

In this paper an efficient algorithm is derived for scheduling real power in systems where the phase angles across lines are not small and, hence, have to be taken into consideration. The approach is based on assigning a cost to the loading on the transmission system. The cost lunction chosen in this paper simplifies the problem of scheduling to a load-flow type problem so that when the solution to the load- flow problem is obtained, the optimal dispatch solution is also automatically obtained. Thus there is no need to alternate between a load-flow step and an optimization step and this results in considerable computational savings.

关键词： Power systems Costs Power generation economics Processor scheduling Propagation losses Scheduling algorithm Power system modeling Power system economics Power transmission lines Power engineering and energy

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ON THE EXISTENCE OF ENERGY FUNCTION FOR POWER-systemS WITH TRANSMISSION LOSSES

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IEEE TRANSACTIONS ON CIRCUITS AND systemS 1984年第2期31卷 199-203页

作者： NARASIMHAMURTHI, N Power System Laboratory Department of Electrical and Computer Engineering University of Michigan Ann Arbor MI USA

In this paper we show that any energy (Lyapunov) function to analyze the stability of equilibrium points of systems with transmission losses would, in general, not be a continuous (with respect to transmission losses) deformation of the standard energy function used for a lossless system. This result implies that stability analysis using Lyapunov functions for systems with losses would require Lyapunov functions that are substantially different from the energy function used for lossless systems.

关键词： Power systems Propagation losses Load modeling Power system stability Stability analysis Lyapunov method Power system modeling Impedance Equations Power system analysis computing

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Convergence Analysis of Distributed Asynchronous Iterative Processes *

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IFAC Proceedings Volumes 1984年第2期17卷 1145-1146页

作者： D.P. Bertsekas Laboratory for Information and Decision System. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Cambridge MA 02139 USA

We consider a model of distributed iterative algorithms whereby several processors participate in the computation while collecting, possibly stochastic information from the environment or other processors via communication links. Several applications in distributed optimization, parameter estimation, and communication networks are described. Issues of asymptotic convergence and agreement are explored under very weak assumptions on the ordering of computations and the timing of information reception. Progress towards constructing a broadly applicable theory is surveyed.

关键词： Fixed Points Distributed Algorithm Optimization Shortest Path Dynamic Programming

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SHIP COMBAT system SIMULATION (SCSS)

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NAVAL ENGINEERS JOURNAL 1984年第3期96卷 142-148页

作者： MENSH, DR The Authorreceived his B.S. and M.S. degrees in applied physics from Loyola College in Baltimore Md. and the American University in Washington D.C. He also has completed his course work towards his Ph.D. degree in computer science specializing in the fields of system analysis and computer simulation. He has been employed at the Naval Surface Weapons Center White Oak Laboratory Silver Spring Md. for the past seventeen years in the areas of weapon system analysis and the development of weapon system simulations. Since 1978 he has been involved in the development of simulation tools that can be applied to the solution of shipboard combat system architecture and engineering problems. Currently at the White Oak Laboratory he is responsible for the application of and further development of the Single Ship Combat System Simulation.

This paper will describe a combat system integration and analysis tool called the Ship Combat system Simulation (SCSS). The SCSS was designed as an analysis tool to study sensor command and control and weapon system integration for shipboard combat systems. The simulation represents the combat system components as nodes in a network. Data flows between the nodes through the links. SCSS is a structured program simulation written in Simscript II.5. The structured program feature allows for ease of combat system reconfiguration into different types of architectures. Consequently, SSCS can be used to study and analyze different combat system architectures. Currently the model has an antiairwarfare (AAW) capability and a partial antisurface warfare (ASUW) capability. The model has been used in ship vulnerability and survivability studies, individual combat system component studies, component trade-off analysis; and total system reaction time analysis. Figure 1 presents a sample of a SCSS link-node diagram. Figures 8 and 9 present combat system sequence and timing diagrams. The model boasts a postprocessing capability that includes both statistics and graphics packages. The SCSS has been developed jointly by the Naval Weapons Center, Naval Ocean systems Center, Naval Surface Weapons Center, Naval Ships Weapons systems engineering Station, and CACI, Inc. SCSS is supported by naval and industrial laboratories throughout the country. The users of the simulation belong to the SCSS User's Group which meets periodically throughout the year. Members of the User's Group develop equipment nodes and exchange ideas. The User's Group maintains SCSS configuration management allowing for Simscript II.5 code written by any one user to be used by all other users.

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RETROFITTING OF BULBOUS BOWS ON UNITED-STATES NAVY AUXILIARY AND AMPHIBIOUS WARSHIPS

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NAVAL ENGINEERS JOURNAL 1984年第6期96卷 40-51页

作者： CHUN, SK HOUGH, JJ ENGLE, AH FUNG, SC Stephen K. Chunis a graduate of the Maritime College of the State University of New York class of 1981 from which he received a B.E. degree in naval architecture and his license as a Third Assistant Engineer from the U.S. Coast Guard. Since graduation he has worked for the U.S. Navy as a naval architect with the Hull Form and Hydrodynamics Performance Division (SEA 55W3) of the Naval Sea Systems Command. Currently he is the task leader for hydrodynamic design for the DDG-51. He is also responsible for bulbous bow and appendage design for surf ace ships. Mr. Chun is a member of ASNE SNAME and ASE. Jeffrey J. Hough:is currently a naval architect with the Hull Form and Hydrodynamic Performance Division (SEA 55VV3) of the Naval Sea Systems Command (NA VSEA). In his current capacity he is a member of the Surface Ship Hydrodynamics Branch and is the divisional coordinator for computer supported design (CSD) technical director for the hull form design system (HFDS) Hull Engineering Group (SEA 55) assistant coordinator for CSD SEA 55 CSD coordinator for the DDG-51 contract design and SEA 55W3 project engineer for aircraft carrier/aviation support ship hydrodynamics. Mr. Hough received his B.S.E. degree in naval architecture and marine engineering in 1978 and his M.S.E. degree in naval architecture and marine engineering in 1979 from the University of Michigan. He began his career with the U.S. Navy in 1979 as an Engineer-in-Training in the Ship Design and Integration Directorate of NAVSEA. Prior to his current assignment Mr. Hough was the technical director responsible for the hull form and hydrodynamics energy conservation program and technical specialist for design practices for resistance and powering margins and hull form geometry. A member of ASNE since 1979 Mr. Hough is also a member of SNAME ASE and the U.S. Naval Institute. Allen H. Engleis a naval architect with the Hull Form Design and Performance Division of the Naval Sea Systems Command. He received his B.S. degree in engineering science from th

To meet energy conservation goals of the U.S. Navy, its attention has been focused on ways to reduce individual ship total resistance and powering requirements. One possible method of improving ship powering characteristics is by modifying existing individual ship hulls with the addition of bulbous bows. This paper will identify the merits of retrofitting bow bulbs on selected U.S. Navy auxiliary and amphibious warfare ships. A procedure for performing a cost-benefit analysis will be shown for candidate ship classes. An example of this technique for an amphibious warfare ship will also be provided. A brief discussion of future methods to be used for bulbous bow design such as application of systematic model test data and numerical hydrodynamic techniques will be given.

关键词： NAVAL VESSELS

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ADVANCES IN LONG-RANGE, HIGH-SPEED OPTICAL COMMUNICATION

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NAVAL ENGINEERS JOURNAL 1981年第4期93卷 39-48页

作者： BARTON, GG FELDMAN, S Mr. Sidney Feldman formerly with the Naval Applied Science Laboratory is presently with the Radiation Division of the Naval Surface Weapons Center White Oak Silver Spring Maryland. He planned and supervised laboratory experiments of many optical systems for fleet evaluation several of his designs now being standard in the fleet. He received his BA degree in Physics from Brooklyn College in 1941 and majored in Physics at the Brooklyn Polytechnic Institute. His professional memberships include the Optical Society of America American Association for the Advancement of Science and The Scientific Research Society of North America. He was the recipient of the Naval Ordnance Development Award in 1945 the Superior Achievement Award in 1957 the Quality Salary Increase Award in 1965 the Superior Accomplishment Award in 1967 1970 and 1979. Additionally he has been granted patents for a relamping tool for searchlights (1962) a lamp positioning mechanism for searchlights (1963) a daylnight digital sextant (1973) a portable sextant-computer system (1974) and with Mr. George Barton the remote-controlled LLLTV camera-sextant (1976) the automatic passive LLLTV-rangefinder (1977) and a patent disclosure for the omnidirectional transceiver (1980). Mr. George G. Barton has been employed by the Naval Research Laboratory Washington D. C. for the past ten years in the scientific and military application design engineering and fabrication of low light level TV camera systems. He was previously associated with the Smithsonian Institution and Northwestern University in the application of TV technology in astronomical investigations. He attended New York University Newark College of Engineering and New Mexico State University where he majored in Physical Optics. Presently he is with his own company BISMARC Inc. Harker's Island N.C. where he is involved principally in the design manufacture and marketing of sonar systems such as the unique VIDISEA fishscope research and development in electrooptic systems an

During periods of radio silence under Emission Control, communication depends on the slow ship-to-ship, manual-visual, 8-10 wpm Morse code signaling shutter searchlight employing the ac 1000-watt incandescent or the ac 1000-watt compact arc mercury-xenon lamp. These sources can be replaced by the dc compact arc xenon lamp to provide longer daylight ranges and highspeed (100 wpm teletype, 150 wpm Morse code, voice, etc.) communication since this source has superior brightness and the facility of considerably more rapid modulation. The excessive weight and size of the ac-dc power convertor and modulating circuitry which had prevented use of the dc xenon lamp have been overcome by developments in solid state electronics such as the rapid, high current, simmer-flash, 100 to one light output xenon lamp pulsing using the reliable, uncomplicated, low-cost silicon controlled rectifier shunt switch which could eliminate the mechanical signaling shutter. laboratory and sea evaluations have proved the feasibility of and provided the long daylight high-speed optical communication ranges that could be attained from operation of the dc 1000-watt and 2200-watt xenon lamps at the focus of 12-inch, 18-inch searchlights and in the Fresnel lens omni-directional beacon which a command ship uses to signal all ships in a task force at once. With these advances, optical communication provides the highspeed capability of radio communication, particularly, also, with the new omnidirectional transceiver.

关键词： SHIPS

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INNOVATIONS IN computer-AIDED-DESIGN OF MARINE TURBINES USING INTERACTIVE GRAPHICS

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NAVAL ENGINEERS JOURNAL 1980年第2期92卷 207-217页

作者： GINGRICH, JK WINTER, RL Mr. John K. Gingrich joined the General Electric Company after his graduation from Lafayette College in 1948. His early assignments were with the General Engineering Laboratory and the Knolls Atomic Power Laboratory in Schenectady. N. Y. He joined the Marine Turbine and Gear Department in 1968 as Manager Engineering Administration. and assumed his present assignment as Manager Engineering Resource Planning & Administration in 1976. Mr. Gingrich was instrumental in procuring the Interactive Graphics System for the Medium Steam Department. having headed up the Study Team and is now responsible for the Interactive Graphics Systems management including new procurements. He is a member of the American Institute of Design Drafting and is currently the Chairman of the Computer-Aided Drafting Committee in that organization. Mr. Reinhold L. Winter is a graduate of the General Electric Apprentice Program and Salem State College from which he received his B.S. degree in Business Administration. He has nineteen years experience with the General Electric Company including eight years in Business Systems and Programming two years in Computer Operations Management and six years in his present position as Manager Engineering Business Systems. He was a member of the original Study Team that investigated and selected the present Applicon Interactive Graphics (IAG) equipment and currently is responsible for the management of software and hardware support for the ZAG Facility.

This paper discusses the Interactive Graphics system used by the General Electric Company, Medium Steam Turbine Department (engineering & Manufacturing) for designing, drafting, and manufacturing applications. A brief overview of the hardware malting up the system is described, followed by a more detailed description of the actual applications. Two-dimensional applications described include a Heat Balance Analysis, Flow Diagrams, and Electrical Schematics. A more fruitful area for increased productivity gains is described in the three-dimensional or mechanical applications including turbine design & layout and bucket design. coordination of the design with manufacturing for numerical control tape generation is described through CAM and Plate Frame Cutting applications. Finally, a short review of the engineering design work using Interactive Graphics is discussed. Productivity gains of 2.6 to 1 are being realized, and the overall savings to the Medium Steam Department are outlined.

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