Analog To Digital Conversion
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. Controle de atitude de satélites artificiais utilizando um processador digital de sinais / Attitude control of satellites using a digital signal processor
This work deals with the development and implementation of an attitude control system for an artificial satellite using a Digital Signal Processor (DSP). The dissertation presents a complete study of the attitude movement modeling and control for the continuous time systems case, considering the Linear Quadratic Regulator (LQR) and Linear Quadratic Gaussian
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/2010
-
2. Vulnerabilidade de películas cinematográficas: Manuseio, conservação, digitalização (desenvolvimento de CD-ROM)
A new option to preserve and publish collections in various kinds of themes and proportions came from the new technologies and the conversion from analog information to digital information. The project "Vulnerability of Cinematographic Films Handling, Conservation and Digitization has as subject the cinematographic film, physical and chemistry substrate for
Publicado em: 2007
-
3. Design and development of 4-20mA signal conditioner with optical isolation / Projeto e desenvolvimento de um condicionador de sinais com saida 4-20mA com isolamento optico
In this work it is presented the design, development and implementation of a low cost and versatile signal conditioner which is similar to the products available in the Brazilian market, most of them imported. The developed equipment performs the conversion, filtering, isolation and conditioning of small control signals from various types of sensors and tran
Publicado em: 2006
-
4. CONTROLE DE ACELERAÇÃO DE UMA MÁQUINA DE VIBRAÇÃO ELETRODINÂMICA / ACCELERATION CONTROL OF AN ELECTRODYNAMIC VIBRATION MACHINE
This work presents the development of a novel digital acceleration controller for sinusoidal vibration tests using switching-mode AC power source (ACPS) fed electrodynamic vibration machines. The proposed scheme is based on the interaction of two control loops: one for the shaker s acceleration regulation and another for the ACPS output voltage control. A ro
Publicado em: 2005
-
5. In vitro and in vivo appraisal of pre-heated resin composite with relation to polymerization kinetics / "Avaliação in vitro e in vivo da resina composta pré-aquecida em relação à cinética de polimerização
This work examined multiple aspects of pre-heating dental resin composite prior to light-curing: the monomer conversion and polymerization kinetics as a function of cure temperature, light-exposure duration and depth; the performance of the heating device (maximum temperature, thermal stability of device and temperature change when pre-heating compules); and
Publicado em: 2005
-
6. Instrumentação eletrônica de apoio para um sistema de epitaxia por feixes moleculares / Electronic hardware development for molecular beam epitaxy.
Neste trabalho é apresentado o desenvolvimento de instrumentação eletrônica para controle e automação de um sistema de crescimento de semicondutores por Epitaxia por Feixes Moleculares. Envolve uma variedade de circuitos analógicos e digitais como: um módulo de aquisição de dados e controle baseado em uma UCP Z-80, contendo algumas interfaces digit
Publicado em: 1994
-
7. Positive feedback in eukaryotic gene networks: cell differentiation by graded to binary response conversion
Feedback is a ubiquitous control mechanism of gene networks. Here, we have used positive feedback to construct a synthetic eukaryotic gene switch in Saccharomyces cerevisiae. Within this system, a continuous gradient of constitutively expressed transcriptional activator is translated into a cell phenotype switch when the activator is expressed autocatalytica
Oxford University Press.