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Contribuições ao acionamento e controle dos motores de relutância variável e síncrono de relutância
(Universidade Federal de Santa Maria, 2019-02-15)
This master thesis presents contributions to the driving and control of switched
reluctance motors and synchronous reluctance motors. The main characteristics of the
switched reluctance machine are the low production ...
Metodologia de projeto de um inversor ressonante auto-oscilante operando em alta frequência para aplicações a LED.
(Universidade Federal de Santa Maria, 2019-02-05)
In this dissertation, a design methodology is proposed for the Self Oscillating Resonant Converter operating in high frequency for LED lighting aplications. The high-frequency operation of electronic circuits has, as the ...
Análise de fornecedores de um setor público empregando o método Fuzzy-TOPSIS com auxílio do método AHP
(Universidade Federal de Santa Maria, 2019-03-22)
Choosing suppliers is among the most complex tasks for a manager because of the many
possible variables involved in that decision making. Analyzing criteria such as quality, delivery
time and price can currently influence ...
Análise de sensibilidade de redes de drenagem urbana a parâmetros hidrológicos utilizando modelagem hidrodinâmica e dimensionamento automatizado
(Universidade Federal de Santa Maria, 2019-02-15)
The hydrodynamic models allow a better characterization of the flow in urban rainwater systems, including the backwater effects. Thus, when used in sizing, they produce more efficient and adequate solutions when compared ...
Técnicas para otimização de conversores da família boost com alto ganho de tensão e alto rendimento aplicados à célula a combustível
(Universidade Federal de Santa Maria, 2019-02-28)
In this work, it is proposed methodologies for design optimization of high gain boost static converters
applied to fuel cells. In this aplication, two types of boost converters are evaluated.
The first one is based on ...
Avaliação da resistência e da deformabilidade de quatro solos empregados em subleitos rodoviários no estado do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2016-03-03)
The pavement is considered a finite multiple layer system, subject to stresses, strains and displacements from the cyclical traffic requests. The subgrade, as it is the foundation of a pavement structure, must have a support ...
Estudo do efeito deletério da água em misturas asfálticas a quente produzidas no Rio Grande do Sul
(Universidade Federal de Santa Maria, 2019-02-21)
Asphalt pavements should provide users with safe and reliable transportation, however, agents such as traffic actions, weather conditions and inadequate maintenance result in the process of road deterioration. The water ...
Gráficos de controle de regressão beta robustos
(Universidade Federal de Santa Maria, 2019-02-19)
Control charts are the main tool of the statistical control process (SPC) to monitor and extract
information about a certain process. The usual control charts are built under the normality
assumption of the data or ...
Concepção de um conversor DC-DC auto-oscilante aplicado a um sistema energy harvesting
(Universidade Federal de Santa Maria, 2015-09-01)
This thesis aims to present the design and development of a self-oscillating DC-DC converter applied to an Energy Harvesting (EH) system. The relevance of this study is caracterized by the proposed standard analysis with ...
Controle individual de passo para turbinas eólicas utilizando controlador adaptativo
(Universidade Federal de Santa Maria, 2019-02-26)
This Master Thesis deals with the problem of reducing the resulting asymmetrical
mechanical loads on the structure of large wind turbines, with horizontal axis and three
blades, by means of individual pitch control of ...