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Diagnostico De Fallas Rotatorias Utilizando Transformadas De Tiempo Frecuencia
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Book Synopsis Diagnóstico de fallas rotatorias utilizando transformadas de tiempo-frecuencia by : Pablo Andrés Cayul Salazar
Download or read book Diagnóstico de fallas rotatorias utilizando transformadas de tiempo-frecuencia written by Pablo Andrés Cayul Salazar and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Uso de transformadas tiempo-frecuencia en el diagnóstico de fallas en máquinas rotatorias by : Roberto Andrés Inostroza Aránguiz
Download or read book Uso de transformadas tiempo-frecuencia en el diagnóstico de fallas en máquinas rotatorias written by Roberto Andrés Inostroza Aránguiz and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aplicación de transformadas tiempo-frecuencia al diagnóstico de fallas en máquinas rotatorias by : Christian Harrison Amirá
Download or read book Aplicación de transformadas tiempo-frecuencia al diagnóstico de fallas en máquinas rotatorias written by Christian Harrison Amirá and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diagnóstico predictivo de máquinas rotatorias de velocidad variable utilizando transformadas tiempo-frecuencia by : Patricio Renato Fernández Vallejos
Download or read book Diagnóstico predictivo de máquinas rotatorias de velocidad variable utilizando transformadas tiempo-frecuencia written by Patricio Renato Fernández Vallejos and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Desarrollo de una Metodología para el Diagnóstico de Fallas Mecánicas en Máquinas Rotativas Empleando Wavelets by : Juan Fernando López López
Download or read book Desarrollo de una Metodología para el Diagnóstico de Fallas Mecánicas en Máquinas Rotativas Empleando Wavelets written by Juan Fernando López López and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Las vibraciones mecánicas, como herramienta de diagnóstico de fallas en máquinas y procedimiento de mantenimiento predictivo, han sido ampliamente estudiadas en los últimos años por la industria privada y por numerosas universidades del mundo entero. Uno de los puntos neurálgicos en este continuo desarrollo del análisis de vibraciones mecánicas, es la técnica de procesamiento a utilizar. La transformada de Fourier se destaca como la principal técnica utilizada debido a los buenos resultados que hasta la fecha ha proporcionado a los técnicos encargados del mantenimiento en la industria y del análisis de dichas señales. El siguiente paso en el análisis de vibraciones es encontrar una forma de automatizar el proceso de diagnóstico de falla en máquinas rotativas y este proyecto tiene el propósito de desarrollar una metodología que permita acercar ese objetivo final. En este proyecto para el desarrollo de una metodología de análisis empleando transformaciones tiempo-frecuencia, en primera medida se obtienen las bases de datos de las señales de vibración de un motor eléctrico con desbalanceo y en buen estado, una base de datos de fallas en rodamientos y una base de datos de fallas en máquinas rotativas proporcionada por Smurfit Kappa Cartón de Colombia S.A. Se definen 6 metodologías de análisis en las cuales se realiza el preprocesamiento de las señales haciendo el filtrado por umbralizado wavelet y se estudia la estacionariedad de la señales empleando el Run test. En la etapa de extracción de características se utilizan las transformaciones de Fourier FFT y STFT, la transformada wavelet discreta, el análisis cepstrum y las distribuciones Wigner Ville y Choi Williams. Para tratar el problema de la alta dimensionalidad, se utiliza el análisis de componentes principales y se hace la clasificación utilizando clasificadores lineal y tipo Bayes. Para las señales de desbalanceo se obtiene una mejor clasificación empleando la transformada wavelet con 99,5% de aciertos en ..
Book Synopsis Clasificacion de fallas en motores electricos utilizando señales de vibracion by : Gustavo Adolfo Arango Florez
Download or read book Clasificacion de fallas en motores electricos utilizando señales de vibracion written by Gustavo Adolfo Arango Florez and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Resumen: La tesis está encaminada a la aplicación de las técnicas tiempo frecuencia al análisis de senales de vibración para el diagnóstico de fallas en máquinas rotativas. Para esto se implementan métodos de extracción y clasificación de caracteristicas para lograr acercar de manera más precisa al diagnosticador a encontrar la causa raíz de la falla. Se realiza un estudio de cuatro métodos de extracción de características: Transformadas Wavelet, Distribución Wigner Ville, Distribución Choi Williams y la Transformada Rápida de Fourier. Además se entrena un clasificador neuronal para lograr clasificar los tres tipos de fallas seleccionadas, se realizan comparativos entre los métodos de extracción de características, varias topologías de red y diez algoritmos de aprendizaje del clasificador.
Book Synopsis Detección y diagnóstico de fallas utilizando la transformada wavelet. Revista Ciencia e Ingeniería. 25(1), 2004 by : M. Guillén
Download or read book Detección y diagnóstico de fallas utilizando la transformada wavelet. Revista Ciencia e Ingeniería. 25(1), 2004 written by M. Guillén and published by . This book was released on 2000 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reliability-centered Maintenance by : John Moubray
Download or read book Reliability-centered Maintenance written by John Moubray and published by Industrial Press Inc.. This book was released on 2001 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely reorganised and comprehensively rewritten for its second edition, this guide to reliability-centred maintenance develops techniques which are practised by over 250 affiliated organisations worldwide.
Book Synopsis Foregrounding Background by : Jens S. Allwood
Download or read book Foregrounding Background written by Jens S. Allwood and published by Coronet Books. This book was released on 1985 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Long, Lingering Shadow by : Robert J. Cottrol
Download or read book The Long, Lingering Shadow written by Robert J. Cottrol and published by University of Georgia Press. This book was released on 2013-02-01 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Students of American history know of the law’s critical role in systematizing a racial hierarchy in the United States. Showing that this history is best appreciated in a comparative perspective, The Long, Lingering Shadow looks at the parallel legal histories of race relations in the United States, Brazil, and Spanish America. Robert J. Cottrol takes the reader on a journey from the origins of New World slavery in colonial Latin America to current debates and litigation over affirmative action in Brazil and the United States, as well as contemporary struggles against racial discrimination and Afro-Latin invisibility in the Spanish-speaking nations of the hemisphere. Ranging across such topics as slavery, emancipation, scientific racism, immigration policies, racial classifications, and legal processes, Cottrol unravels a complex odyssey. By the eve of the Civil War, the U.S. slave system was rooted in a legal and cultural foundation of racial exclusion unmatched in the Western Hemisphere. That system’s legacy was later echoed in Jim Crow, the practice of legally mandated segregation. Jim Crow in turn caused leading Latin Americans to regard their nations as models of racial equality because their laws did not mandate racial discrimination— a belief that masked very real patterns of racism throughout the Americas. And yet, Cottrol says, if the United States has had a history of more-rigid racial exclusion, since the Second World War it has also had a more thorough civil rights revolution, with significant legal victories over racial discrimination. Cottrol explores this remarkable transformation and shows how it is now inspiring civil rights activists throughout the Americas.
Download or read book Spellhorn written by Berlie Doherty and published by HarperCollins UK. This book was released on 2010 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: As soon as Laura climbs on to the unicorn's back she is hurled into a wild and magical world. For only with Laura as their leader can Spellhorn and the Wild Ones reach the safety of the Bright Wilderness. But will Laura ever return to her own world again?
Book Synopsis Social Innovation and Territorial Development by : Diana MacCallum
Download or read book Social Innovation and Territorial Development written by Diana MacCallum and published by Routledge. This book was released on 2016-04-01 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of social innovation offers an alternative perspective on development and territorial transformation, one which foregrounds innovation in social relations. This volume presents a broad-ranging and insightful exploration of social innovation and how it can affect life, society and economy, especially within local communities. It addresses key questions about the nature of social innovation as a process and a strategy and explores what opportunities may exist, or may be generated, for social innovation to nourish human development. It puts forward alternative development options which variously highlight solidarity, co-operation, cultural-artistic endeavour and diversity. In doing so, this book offers a provocative response to the predominant neoliberal economic vision of spatial, economic and social change.
Book Synopsis Representation and Understanding by : Jerry Bobrow
Download or read book Representation and Understanding written by Jerry Bobrow and published by Elsevier. This book was released on 2014-06-28 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Representation and Understanding
Book Synopsis Can Neighbourhoods Save the City? by : Frank Moulaert
Download or read book Can Neighbourhoods Save the City? written by Frank Moulaert and published by Routledge. This book was released on 2010-07-12 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: For decades, neighbourhoods been pivotal sites of social, economic and political exclusion processes, and civil society initiatives, attempting bottom-up strategies of re-development and regeneration. In many cases these efforts resulted in the creation of socially innovative organizations, seeking to satisfy the basic human needs of deprived population groups, to increase their political capabilities and to improve social interaction both internally and between the local communities, the wider urban society and political world. SINGOCOM - Social INnovation GOvernance and COMmunity building – is the acronym of the EU-funded project on which this book is based. Sixteen case studies of socially-innovative initiatives at the neighbourhood level were carried out in nine European cities, of which ten are analysed in depth and presented here. The book compares these efforts and their results, and shows how grass-roots initiatives, alternative local movements and self-organizing urban collectives are reshaping the urban scene in dynamic, creative, innovative and empowering ways. It argues that such grass-roots initiatives are vital for generating a socially cohesive urban condition that exists alongside the official state-organized forms of urban governance. The book is thus a major contribution to socio-political literature, as it seeks to overcome the duality between community-development studies and strategies, and the solidarity-based making of a diverse society based upon the recognising and maintaining of citizenship rights. It will be of particular interest to both students and researchers in the fields of urban studies, social geography and political science.
Book Synopsis Historia Regum Britanniae by : Geoffrey Of Monmouth
Download or read book Historia Regum Britanniae written by Geoffrey Of Monmouth and published by . This book was released on 2019-07-05 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The full, ancient text: Historia Regum Britanniae.Historia regum Britanniae (or The History of the Kings of Britain) is a supposedly historical account written by Geoffrey of Monmouth in 1136. Though much of the text is largely considered fiction, it does pull from several ancient texts and true historical events/personas.It is notable for being the first, major blockbuster-like success of the Arthurian legends, bringing the character to widespread popularity for the first time. Many of our modern myths (and ancient ones) have drawn from this text.
Book Synopsis Historia General Y Natural de Las Indias by : José Spain
Download or read book Historia General Y Natural de Las Indias written by José Spain and published by . This book was released on 1851 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historia General Y Natural De Las Indias by Jos� Spain, first published in 1851, is a rare manuscript, the original residing in one of the great libraries of the world. This book is a reproduction of that original, which has been scanned and cleaned by state-of-the-art publishing tools for better readability and enhanced appreciation. Restoration Editors' mission is to bring long out of print manuscripts back to life. Some smudges, annotations or unclear text may still exist, due to permanent damage to the original work. We believe the literary significance of the text justifies offering this reproduction, allowing a new generation to appreciate it.
Book Synopsis Unfolding the City by : Anne Lambright
Download or read book Unfolding the City written by Anne Lambright and published by U of Minnesota Press. This book was released on 2007 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: The city is not only built of towers of steel and glass; it is a product of culture. It plays an especially important role in Latin America, where urban areas hold a near-monopoly on resources and are home to an expanding population. The essays in this collection assert that women's views of the city are unique and revealing. For the first time, Unfolding the City addresses issues of gender and the urban in literature--particularly lesser-known works of literature--written by Latin American women from Mexico City, Santiago, and Buenos Aires. The contributors propose new mappings of urban space; interpret race and class dynamics; and describe Latin American urban centers in the context of globalization. Contributors: Debra A. Castillo, Cornell U; Sandra Messinger Cypess, U of Maryl∧ Guillermo Irizarry, U of Massachusetts, Amherst; Naomi Lindstrom, U of Texas, Austin; Jacqueline Loss, U of Connecticut; Dorothy E. Mosby, Mount Holyoke Colle≥ Angel Rivera, Worcester Polytechnic Institute; Lidia Santos, Yale U; Marcy Schwartz, Rutgers U; Daniel Noemi Voionmaa, U of Michigan; Gareth Williams, U of Michigan. Anne Lambright is associate professor of modern languages and literature at Trinity College in Hartford, Connecticut. Elisabeth Guerrero is associate professor of Spanish at Bucknell University.
