作者：
Igel, M.Koglin, H.‐J.Schegner, P.Dr.-lng. Michael Igel (1961). VDE
received his Dip1.-lng. degree in Electrical Engineering at the University of SaarlandGermany. in 1987 and became scientific assistant at the Lehrstuhl fur Energieversorgung of this University. After receiving his Dr.-Ing. degree in 1990. he presently works as development engineer of the department of protection systems in the power transmission and distribution division of AEG at Frankfurt a. M./Germany. (AEG Aktiengesellschaft Lyoner Str. 44-48. D-6000 Frankfurt 7 I T + 49 69/66 40 16 I 7) Prof. Dr.-lng. Hans-Jurgen Koglin (1937). VDE
holds the Lehrstuhl fur Energieversorgung of the University of SaarlandGermany since 1983. After the study of Electrical Engineering (power engineering) at the Technische Hochschule DarmstadtIGermany. he worked as a scientific assistant at the “Institut fur Elektrische Enerpieversorgung” of this Unive:rsity. After receiving his Dr.-lng. degree he tirst worked as assistant professor later on as full Professor at the Technische Hochschule Darmstadt (Department “Systemfuhrung in Energieversorgungsnetzen”). He is member i n several national and international committees. His most important research activities are: reliability evaluation computer-optimized network development planning digital network protection systems substation control system state estimation. corrective switching visibility of overhead lines. (Universitat des Saarlandes Lehrstuhl fur Energieversorgung Im Stadtwald D-6600 Saarbriicken I I T + 4 9 6 8 113 023979) Dr.-Ing. Peter Schegner (1955)
VDEis head of the development department of protection systems in .the power transmission and distribution division of AEG at Frankfurt a. M./Gerrnany. He studied Electrical Power Engineering at the Technische Hochschule Darmstadt/Genany and worked as system engineer in the field of power system control. He became a member of the scientific staff at the Universitiit des Saarlandes receiving his degree with a thesis on the earthfault distance protection. (AEG Aktiengesellschaft
Through the analysis of transient signals after the occurrence of an earthfault it is possible to evaluate fault direction and fault distance. The faulty line is simulated by using a three phase Tl‐model. The result ...
作者：
R.Y. Al-JaarA.A. DesrochersSystem Modeling Group
Digital Equipment Corporation 4 Results Way MRO4-1/H17 Marlboro MA 01752-9122 USA Electrical
Computer and Systems Engineering Department Rensselaer Polytechnic Institute Troy NY 12180-3590 USA
Controlling complex computer integrated manufacturing systems requires the design of an equally complex system of computers whose topology forms a real-time Decision Making Architecture (DMA) consisting of control, co...
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Controlling complex computer integrated manufacturing systems requires the design of an equally complex system of computers whose topology forms a real-time Decision Making Architecture (DMA) consisting of control, communication, and database functions, The purpose of the DMA is to ensure that production operations proceed on schedule, and to detect and correct any errors in real-time, The choice of a DMA greatly influences the performance of the overall manufacturing system. A generic methodology for evaluating DMAs is proposed. Each computer is modeled as a Decision Making Unit (DMU) using Generalized Stochastic Petri Nets (GSPNs). Each DMU represents the functions of a typical computer in a manufacturing environment. DMU modules serve as basic building blocks that can be easily interconnected to model any desired DMA. The measure of performance is the response time, and a procedure for computing it is described. Two- and three-level hierarchical DMAs are evaluated by automatically solving the equivalent Markov Chain of the GSPN model.
Pulsewidth-constrained signals are developed for use on the degraded direct-detection optical channel. A two-dimensional representation for these signals is obtained and used to design a trellis-coded-modulation (TCM)...
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Pulsewidth-constrained signals are developed for use on the degraded direct-detection optical channel. A two-dimensional representation for these signals is obtained and used to design a trellis-coded-modulation (TCM) system for use on the optical channel. The theoretical advantage of optical TCM is shown, through use of the cutoff rate, to range from 7.5 to 9 dB, depending on the throughput rate of the system. The practical potential is shown, through the actual design of a TCM system, to be as high as 6.7 dB.< >
The Shipboard Integrated Processing And Display system (SHINPADS) Serial Data Bus is a high speed digital interconnect system designed to provide a real time data bus communication facility for Naval Electronic system...
The AN/UYK‐502 Microcomputer is a full‐scale, general‐purpose 16‐bit militarized computer designed to emmulate the AN/UYK‐20 and AN/AYK‐14, and to be implemented in a shipboard system employing distributed syste...
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