<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1405-5546</journal-id>
<journal-title><![CDATA[Computación y Sistemas]]></journal-title>
<abbrev-journal-title><![CDATA[Comp. y Sist.]]></abbrev-journal-title>
<issn>1405-5546</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Centro de Investigación en Computación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-55462004000100006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización de Filtros Digitales en Tiempo Real para Computadoras Digitales]]></article-title>
<article-title xml:lang="en"><![CDATA[Characterization of Real Time Digital Filters to Digital Computers]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medel]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guevara López]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores Rueda]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,IPN Centro de Investigación en Computación Laboratorio de Electrónica]]></institution>
<addr-line><![CDATA[México D. F.]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2004</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2004</year>
</pub-date>
<volume>7</volume>
<numero>3</numero>
<fpage>190</fpage>
<lpage>209</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-55462004000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-55462004000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-55462004000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[La clase de Filtros Digitales que interactúa con procesos dinámicos, y que emite respuestas de alta calidad, con restricciones de tiempo y de sincronía en forma crítica se les conocerá como FDTR (Filtros Digitales en Tiempo Real). En este artículo se desarrollarán los siguientes temas: a) Estado del arte sobre Teoría de Filtrado, teoría de Tiempo Real y teoría de filtrado en Tiempo Real, b) Conceptos teóricos que permitan describir a un FDTR a través de sus propiedades locales y globales, c) Los aspectos de implementación de un FDTR para estimar los parámetros de un sistema real a través del modelo de un motor de C.C. Presentando un análisis exhaustivo de las tareas concurrentes, de las restricciones de precedencia y de los tiempos dentro de una PC.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Digital Filters that interact with dynamic process, produce high quality responses with synchrony and time constraints in critical form. This kind of filters have been known as RTDF (Real-time Digital Filters). This paper explain the next topics: a) Art of state about Filters theory, Real-time theory and Real-time Digital Filter theory. b) Development of theoretical concepts to describe local and global properties of RTDF. c) Implementation of RTDF like as parameter estimator of a D. C. motor. Including an exhaustive analysis of concurrent tasks, precedence constraints and timing constraints in a PC.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Filtro digital]]></kwd>
<kwd lng="es"><![CDATA[sincronía]]></kwd>
<kwd lng="es"><![CDATA[Tiempo Real]]></kwd>
<kwd lng="es"><![CDATA[tarea]]></kwd>
<kwd lng="es"><![CDATA[intervalo]]></kwd>
<kwd lng="es"><![CDATA[convergencia]]></kwd>
<kwd lng="en"><![CDATA[Digital filter]]></kwd>
<kwd lng="en"><![CDATA[synchrony]]></kwd>
<kwd lng="en"><![CDATA[Real-time]]></kwd>
<kwd lng="en"><![CDATA[tasks]]></kwd>
<kwd lng="en"><![CDATA[convergence]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Art&iacute;culo</font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Caracterizaci&oacute;n de Filtros Digitales en Tiempo Real para Computadoras Digitales</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="3"><b><i>Characterization of Real Time Digital Filters to Digital Computers</i></b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>J. J. Medel, Pedro Guevara L&oacute;pez y Alberto Flores Rueda</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Laboratorio de Electr&oacute;nica, Centro de Investigaci&oacute;n en Computaci&oacute;n &#150; IPN C. P. 07738 M&eacute;xico D. F., E&#150;mails: <a href="mailto:jjmedelpollux.cic.ipn.mx">jjmedelpollux.cic.ipn.mx</a> ; <a href="mailto:guevarapollux.cic.ipn.mx">guevarapollux.cic.ipn.mx</a> ; <a href="mailto:aflores@pollux.cic.ipn.mx">aflores@pollux.cic.ipn.mx</a></i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Art&iacute;culo recibido en enero 21, 2004    <br> Aceptado en febrero 23, 2004</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">La clase de Filtros Digitales que interact&uacute;a con procesos din&aacute;micos, y que emite respuestas de alta calidad, con restricciones de tiempo y de sincron&iacute;a en forma cr&iacute;tica se les conocer&aacute; como FDTR (Filtros Digitales en Tiempo Real). En este art&iacute;culo se desarrollar&aacute;n los siguientes temas:</font></p>     <p align="justify"><font face="verdana" size="2">a) Estado del arte sobre Teor&iacute;a de Filtrado, teor&iacute;a de Tiempo Real y teor&iacute;a de filtrado en Tiempo Real,</font></p>     <p align="justify"><font face="verdana" size="2">b) Conceptos te&oacute;ricos que permitan describir a un FDTR a trav&eacute;s de sus propiedades locales y globales,</font></p>     <p align="justify"><font face="verdana" size="2">c) Los aspectos  de implementaci&oacute;n de un FDTR para estimar los par&aacute;metros de un sistema real a trav&eacute;s del modelo de un motor de C.C. Presentando un an&aacute;lisis exhaustivo de las tareas concurrentes, de las restricciones de precedencia y de los tiempos dentro de una PC.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Palabras clave: </b>Filtro digital, sincron&iacute;a, Tiempo Real, tarea, intervalo, convergencia.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">Digital Filters that interact with dynamic process, produce high quality responses with synchrony and time constraints in critical form. This kind of filters have been known as RTDF (Real&#150;time Digital Filters). This paper explain the next topics:</font></p>     <p align="justify"><font face="verdana" size="2">a) Art of state about Filters theory, Real&#150;time theory and Real&#150;time Digital Filter theory.</font></p>     <p align="justify"><font face="verdana" size="2">b) Development of theoretical concepts to describe local and global properties of RTDF.</font></p>     <p align="justify"><font face="verdana" size="2">c) Implementation of RTDF like as parameter estimator of a D. C. motor. Including an exhaustive analysis of concurrent tasks, precedence constraints and timing constraints in a PC.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Digital filter, synchrony, Real&#150;time, tasks, convergence.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/cys/v7n3/v7n3a6.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Referencias</b></font></p>     ]]></body>
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