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Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D
(Universidade Federal de Santa Maria, 2019-09-13)
The convergence of knowledge related to mechanics, electronics and music has resulted in the development of a series of audio devices. Initially, signal amplifiers were developed working in linear region. Due to the ...
Conversor buck chaveado-linear: estudo e desenvolvimento
(Universidade Federal de Santa Maria, 2019-07-31)
In this dissertation is presented a voltage source converter consisting of a Buck converter and a linear amplifier connected in parallel. This configuration is called as a Switched-Linear converter and the main feature of ...
Análise de irradiação solar em um campus universitário no sul do Brasil
(Universidade Federal de Santa Maria, 2019-11-11)
This research aims to evaluate the behavior of solar irradiation by geographic information system (GIS) on the campus of the Federal University of Santa Maria, in the city of Santa Maria, south of Brazil. In order to ...
Avaliação de propriedades físico-mecânicas de concretos com fíler calcário, em altos teores, cinza de casca de arroz e ativadores
(Universidade Federal de Santa Maria, 2019-11-06)
Construction is one of the largest sectors of the economy by virtue of meeting basic demands. The main material the construction activities is Portland cement. It is known that its substitution by mineral additions provides ...
Modulação de sinal GNSS focado ao Sistema Europeu Galileo
(Universidade Federal de Santa Maria, 2019-06-17)
The Global Navigation Satellite System (GNSS) aims to determine the accurate geolocation of a receiver, using a set of signal from the satellites, which transmitted signals vary the modulation according to the constellation. ...
Projeto técnico e econômico de uma estrutura com dupla função para painéis fotovoltaicos
(Universidade Federal de Santa Maria, 2019-07-11)
The present work aims to develop a technical design of a mechanical structure,
complemented by an economic feasibility study on the implantation of a structure for
photovoltaic panels with dual function in the campus of ...
Concepção de um braço mecânico multifuncional com acionamento hidráulico para acoplamento traseiro em tratores
(Universidade Federal de Santa Maria, 2019-07-17)
This monograph presents the execution of the activities related to the Machine Design area for the development of a farm implement that allows the quick change of attachments. The aim of this work was the generation and ...
Análise das propriedades mecânicas e metalúrgicas em eixos estriados aço SAE 1045 tratados termicamente pelo processo de têmpera por indução eletromagnética
(Universidade Federal de Santa Maria, 2019-12-09)
This paper presents a study on the adaptation of an electromagnetic induction quenching machine, which is used to temper thin helical plates to be used in the tempering of splined shaft tips, used in the junction between ...
Potencialidades e desafios da utilização de biogás para transporte e geração de energia
(Universidade Federal de Santa Maria, 2019-07-19)
In the current conjuncture where environmental sustainability has become a global concern - essential for the survival of market companies - the search for energy generation to replaces traditional sources for sustainable ...
Análise termodinâmica e reprojeto de um motor a vapor
(Universidade Federal de Santa Maria, 2019-05-08)
In 1712, Thomas Newcomen developed an atmospheric, low energy-efficient steam engine, which was enhanced by James Watt in 1769, which improved efficiency by separating the piston from the condenser engine. Currently, the ...