Machine Dynamics
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. PARAMETERS FOR MODELING PASSIVE SUSPENSIONS OF SPRAY BARS
ABSTRACT The uniformity and quality of spraying depend on the stability of the spray boom, defined as the suspension system between the boom and the machine chassis. This paper presents a procedure for improving the performance of passive spray bar suspensions through parameter adjustment. Two multibody dynamics models of a tractor sprayer set were developed
Eng. Agríc.. Publicado em: 2021-05
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2. Electromagnetic Core Analysis of a DFIG State-Feedback Power Controller
Abstract The energy demand by modern society grows every day that allied with sustainable development requires the use of alternative sources in the new energy matrix. In this context, the wind energy as source by using a doubly-fed induction generator stands out due to its operational savings but still faces some conflicts in its power control. This paper p
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 12/09/2019
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3. MÁS ALLÁ DEL RELOJ COMO MODELO DEL SER VIVO: LA DISTINCIÓN MÁQUINA NATURAL Y MÁQUINA ARTIFICIAL EN LEIBNIZ
ABSTRACT During the seventeenth century, the clock seems the most appropriate model for thinking about living beings. The German philosopher G. W. Leibniz (1646-1716), is part of the mechanical tradition that conceives living beings from the clock or the automata’s model, but he establishes an essential distinction between natural and artificial machines.
Kriterion. Publicado em: 29/08/2019
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4. INFORMATION TOKEN DRIVEN MACHINE LEARNING FOR ELECTRONIC MARKETS: PERFORMANCE EFFECTS IN BEHAVIORAL FINANCIAL BIG DATA ANALYTICS
ABSTRACT Conjunct with the universal acceleration in information growth, financial services have been immersed in an evolution of information dynamics. It is not just the dramatic increase in volumes of data, but the speed, the complexity and the unpredictability of ‘big-data’ phenomena that have compounded the challenges faced by researchers and practit
JISTEM J.Inf.Syst. Technol. Manag.. Publicado em: 2017-12
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5. Simulação de grandes escalas para análise numérica da esteira aerodinâmica da turbina eólica NREL UAE Phase VI
The Unsteady Aerodynamics Experiment Phase VI, which has been carried out in 2000 by the US National Renewable Energy Laboratory (NREL) at the NASA Ames wind tunnel, has been numerically reproduced. The purpose of this work is to study the characteristics of the wind wake produced by the 10 meter two bladed wind turbine, operating at a constant rotational sp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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6. Simulação, projeto e teste de um gerador a relutância chaveado trifásico 6 x 4 / Simulation, design and test of a three-phase switched reluctance generator 6 x 4
Switched reluctance machines have received considerable attention from the scientific community due to advances in power electronics, and now is considered a promising electric machine for some applications, especially where variable speed operations are needed for motor or generator. Therefore, this work presents the dynamics of a switched reluctance machin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/06/2011
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7. Machine learning in complex networks / Aprendizado de máquina em redes complexas
Redes complexas é um campo de pesquisa científica recente e bastante ativo que estuda redes de larga escala com estruturas topológicas não triviais, tais como redes de computadores, redes de telecomunicações, redes de transporte, redes sociais e redes biológicas. Muitas destas redes são naturalmente divididas em comunidades ou módulos e, portanto, d
Publicado em: 2010
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8. Desenvolvimento de Uma Órtese Ativa Para os Membros Inferiores Com Sistema Eletrônico Embarcado
This work presents the development of a prototype of an intelligent active orthosis for lower limbs whit an electronic embedded system. The proposed orthosis is an orthopedical device with the main objective of providing walking capacity to people with partial or total loss of lower limbs movements. In order to design the kinematics, dynamics and the mechani
Publicado em: 2010
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9. Modelling hermetic compressors using different constraint equations to accommodate multibody dynamics and hydrodynamic lubrication
In this work, the steps involved for the modelling of a reciprocating linear compressor are described in detail. The dynamics of the mechanical components are described with the help of multibody dynamics (rigid components) and finite elements method (flexible components). Some of the mechanical elements are supported by fluid film bearings, where the hydrod
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-03
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10. M3DS: a dynamic model of distributed development of software. / M3DS: um modelo de dinâmica de desenvolvimento distribuído de software.
This work presents a dynamic model of distributed development of software, whose objective is to represent the reality and the aspects of DDS environments, in order to turn them qualitatively and quantitatively observable. A preliminary model was elaborated from the bibliographical revision and an experimentation case developed by LErario et al (2004). The c
Publicado em: 2009
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11. Simplified engine/nacelle heat transfer case analysis via CFD modeling for supporting the preliminary design of nacelle cooling/ventilation system.
An aeronautical engine is a complex machine composed of different components operating at different temperatures that in conjunction with the nacelle creates a crowded region with the coupled heat transfer mechanisms to be covered by the nacelle cooling/ventilation system. The final configuration of this system is defined through a demanding refinement of th
Publicado em: 2009
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12. Extração de preferências por meio de avaliações de comportamentos observados. / Preference elicitation using evaluation over observed behaviours.
Recently, computer systems have been delegated to accomplish a variety of tasks, when the computer system can be more reliable or when the task is not suitable or not recommended for a human being. The use of preference elicitation in computational systems helps to improve such delegation, enabling lay people to program easily a computer system with their ow
Publicado em: 2009