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[pt] DETERMINAÇÃO DAS SOBRETENSÕES A FREQÜÊNCIA INDUSTRIAL DURANTE A ENERGIZAÇÃO DE LINHAS DE TRANSMISSÃO / [en] DYNAMIC OVERVOLTAGES EVALUATION DURING TRANSMISSION LINE ENERGIZATIONMARIO GARDINO 30 July 2007 (has links)
[pt] O presente trabalho apresenta um programa de computador
digital, que permite avaliar as sobre tensões à freqüência
industrial decorrentes da energização de linhas de
transmissão.
São representados em detalhes o gerador e o seu sistema de
excitação.
Para uma mesma configuração gerador-excitação é possível
simular-se a energização da linha para vários valores de
carregamento do gerador e para diferentes valores iniciais
de tensão.
A utilização prática do programa desenvolvido afigura-se
grande, pois pelo seu uso evita-se o emprego de um
programa de estabilidade a n máquinas, que geralmente não
é adaptado a este tipo de aplicação. / [en] This paper introduces a digital computer program that
enables dynamic overvoltages evaluation during
transmission line energization.
Both synchronous machine and excitation system arefull
scale represented.
For a given machine-excitation configuration it is
possible to simulate line energization for various machine
loadings and different initial terminal voltages.
The program has great practical advantage because its
employ can avoid a multi-machine stability program
utilization, which is not adequate for this kind of
aplication.
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[en] MINIMIZATION OF INCOMPLETELY SPECIFIED SEQUENTIAL MACHINE FOR HEURISTIC PROCESSES / [pt] MINIMIZAÇÃO DE MÁQUINAS SEQÜENCIAIS INCOMPLETAS POR PROCESSOS HEURÍSTICOSLUIZ CRUZ JANSEN FERREIRA 29 January 2008 (has links)
[pt] Este trabalho tem como objetivo a aplicação de processos
heurísticos no problema de minimização dos estados de uma
máquina seqüencial incompleta. Foi desenvolvido um método
heurístico e implementado num computador digital, na
linguagem PL/I. o programa foi aplicado a vários exemplos
encontrados na literatura sobre o assunto. É levantado o
problema da avaliação dos processos heurísticos aplicados
a minimização de máquinas seqüenciais incompletas. / [en] The application of heuristic techniques to the
minimization of incompletely specified sequential machines
is presented. An heuristic method was developed and
implemented by a Pl/I program, ehich was applied to
several examples found in the related literature. Finally
it is mentioned the problem of evaluating heuristic
processes applied to the minimization of incompletely
specified sequential machine.
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Adaptive Control of Nuclear Reactors using a Digital ComputerBereznai, George 04 1900 (has links)
<p> The feasibility of adaptive control of a nuclear reactor is investigated. For practical reasons, an actual operating power plant is chosen, and a digital computer model developed for the reactor and associated control system. The effects of parameter variations on the transient response of the overall system are studied, and the advantages of using an adaptive controller established. An algorithm for the adaptation scheme is developed, and applied successfully to control the nuclear reactor. </p> / Thesis / Master of Engineering (MEngr)
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Simulation of midblock traffic flow along an arterial with and without a two-way left-turn lane /Heikal, Aly Salem January 1983 (has links)
No description available.
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A 68000 based modular multiprocessor system : design and simulation analysis /Obaidat, Mohammad Salameh January 1986 (has links)
No description available.
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A visual simulation support environment based on a multifaceted conceptual frameworkDerrick, Emory Joseph 06 June 2008 (has links)
This thesis presents the development of a multifaceted conceptual framework for discrete-event simulation and its implementation within an integrated visual simulation support environment (VSSE). The intertwined research objectives regarding the conceptual framework and the companion VSSE are presented. A literature review of related work is conducted. The core of the thesis describes the conceptual framework (called the DOMINO), the VSSE and each of the tools from its supporting toolset, and the VSMSL (Visual Simulation Model Specification Language). Three example model applications (bus route, traffic intersection, and branch operations examples) demonstrate the use of the VSSE and the underlying DOMINO. The thesis is evaluated using the research objectives as assessment criteria.
The DOMINO is truly multifaceted. Both graphical and object-oriented, the DOMINO provides design and implementation guidance over the simulation model life cycle. The DOMINO is not restricted to specific problem domains but is independent of application domain. Several different perspectives for developing model component logic are available to modelers under the VSMSL. The VSSE demonstrates significant advances in integrated, automated support for model development which include graphical facilities for definition and specification and effective verification techniques. The VSSE underscores the contributions of the research effort and has helped to identify potential areas for future research. / Ph. D.
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A method for the spatial dynamic simulation of reciprocating compressors using the digital computerSherman, Greg January 1987 (has links)
This thesis introduces the application of computer-aided engineering techniques to the dynamic analysis of reciprocating compressor designs. The analysis process is detailed in three steps.
The first step, an interactive pre-processor, develops the shaking forces and torques acting on the machine. The second step is a batch processed program that performs a dynamic simulation of the compressor in operation. The compressor and mounting are simulated as a rigid body with six degrees-of-freedom (X, Y, and Z translations and roll, pitch, and yaw) mounted to the ground with up to 25 arbitrarily oriented springs and dampers. Additionally, an eigenanalysis is performed that returns the natural frequencies and modes for the machine. The final step is an interactive postprocessor where the user may examine the results of the eigenanalysis as well as the operating orbit of the machine.
A series of programs that implement the analysis process was developed. The specialized formulations for the six coupled, non-linear equations of motion are presented. Color computer graphics and animation are used for visual output displays. The dynamic simulation program is designed to function on many computer systems, from low-cost personal computers to large mainframes, while the pre- and post-processing programs are designed for the personal computer.
The programs were tested by comparing the predicted results with those of an Ingersoll-Rand model 242 two piston, two stage, 3 hp compressor. The correlation between the experimental and predicted results show that the programs can accurately simulate the dynamics of a reciprocating compressor operating at steady-state. Typically, the acceleration results agree for the six degrees-of-freedom in both the time and frequency domain to within 8%. / Master of Science
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An Investigation of the Effect of Violating the Assumption of Homogeneity of Regression Slopes in the Analysis of Covariance Model upon the F-StatisticMcClaran, Virgil Rutledge 08 1900 (has links)
The study seeks to determine the effect upon the F-statistic of violating the assumption of homogeneity of regression slopes in the one-way, fixed-effects analysis of covariance model. The study employs a Monte Carlo simulation technique to vary the degree of heterogeneity of regression slopes with varied sample sizes within experiments to determine the effect of such conditions. One hundred and eighty-three simulations were used.
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Simulation of the IBM System/7Lewis, Ted C. 05 1900 (has links)
This thesis describes the simulation of the IBM SYSTEM/7. The research leading to this thesis involved the development of a PL/I computer program that runs on an IBM 360/50 computer and simulates the IBM SYSTEM/7. Various methods of simulation are examined and guidelines for computer simulation of another computer are established. The SYSTEM/7 simulator (SIM/7) is the heart of this thesis. SIM/7 simulates the IBM SYSTEM/7 entirely with software as opposed to an emulator which involves the combined use of hardware and software to perform the simulation process. This thesis contains a general introduction to computer simulation, reason for simulation, a user's guide for SIM/7 and a definition of the SYSTEM/7 processor using the Vienna Definition Language.
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Analysis of optimal control of a four-gimbal systemGennert, Michael Andrew January 1980 (has links)
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Bibliography: leaf 99. / by Michael Andrew Gennert. / M.S.
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