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Aplicacion De Transformadas Tiempo Frecuencia Al Diagnostico De Fallas En Maquinas Rotatorias
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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 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 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 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 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 Future of Development by : Gustavo Esteva
Download or read book The Future of Development written by Gustavo Esteva and published by Policy Press. This book was released on 2013-10-09 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: On January 20, 1949 US President Harry S. Truman officially opened the era of development. On that day, over one half of the people of the world were defined as "underdeveloped" and they have stayed that way ever since. This book explains the origins of development and underdevelopment and shows how poorly we understand these two terms. It offers a new vision for development, demystifying the statistics that international organizations use to measure development and introducing the alternative concept of buen vivir: the state of living well. The authors argue that it is possible for everyone on the planet to live well, but only if we learn to live as communities rather than as individuals and to nurture our respective commons. Scholars and students of global development studies are well-aware that development is a difficult concept. This thought-provoking book offers them advice for the future of development studies and hope for the future of humankind.
Book Synopsis Cholas and Pishtacos by : Mary Weismantel
Download or read book Cholas and Pishtacos written by Mary Weismantel and published by University of Chicago Press. This book was released on 2001-12-15 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winner of the 2003 Senior Book Prize from the American Ethnological Society. Cholas and Pishtacos are two provocative characters from South American popular culture—a sensual mixed-race woman and a horrifying white killerwho show up in everything from horror stories and dirty jokes to romantic novels and travel posters. In this elegantly written book, these two figures become vehicles for an exploration of race, sex, and violence that pulls the reader into the vivid landscapes and lively cities of the Andes. Weismantel's theory of race and sex begins not with individual identity but with three forms of social and economic interaction: estrangement, exchange, and accumulation. She maps the barriers that separate white and Indian, male and female-barriers that exist not in order to prevent exchange, but rather to exacerbate its inequality. Weismantel weaves together sources ranging from her own fieldwork and the words of potato sellers, hotel maids, and tourists to classic works by photographer Martin Chambi and novelist José María Arguedas. Cholas and Pishtacos is also an enjoyable and informative introduction to a relatively unknown region of 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 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 The Imperial Mode of Living by : Ulrich Brand
Download or read book The Imperial Mode of Living written by Ulrich Brand and published by Verso Books. This book was released on 2021-01-26 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our Unsustainable Life: Why We Can't Have Everything We Want With the concept of the Imperial Mode of Living, Brand and Wissen highlight the fact that capitalism implies uneven development as well as a constant and accelerating universalisation of a Western mode of production and living. The logic of liberal markets since the 19thCentury, and especially since World War II, has been inscribed into everyday practices that are usually unconsciously reproduced. The authors show that they are a main driver of the ecological crisis and economic and political instability. The Imperial Mode of Living implies that people's everyday practices, including individual and societal orientations, as well as identities, rely heavily on the unlimited appropriation of resources; a disproportionate claim on global and local ecosystems and sinks; and cheap labour from elsewhere. This availability of commodities is largely organised through the world market, backed by military force and/or the asymmetric relations of forces as they have been inscribed in international institutions. Moreover, the Imperial Mode of Living implies asymmetrical social relations along class, gender and race within the respective countries. Here too, it is driven by the capitalist accumulation imperative, growth-oriented state policies and status consumption. The concrete production conditions of commodities are rendered invisible in the places where the commodities are consumed. The imperialist world order is normalized through the mode of production and living.
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 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 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 Frank and Lillian Gilbreth by : Michael C. Wood
Download or read book Frank and Lillian Gilbreth written by Michael C. Wood and published by Taylor & Francis. This book was released on 2003 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
