Identification Of Time Varying Parameters
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Aeroelastic stability analysis using linear matrix inequalities
The present work describes an alternative methodology for identification of aeroelastic stability in a range of varying parameters. Analysis is performed in time domain based on Lyapunov stability and solved by convex optimization algorithms. The theory is outlined and simulations are carried out on a benchmark system to illustrate the method. The classical
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012
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2. Contribuição ao Estudo de Máquinas Rotativas na presença de Não-Linearidades / Contribution to the Study of Rotating Machines containing nonlinearities
Esta tese procura enfocar problemas relacionados a rotores inteligentes, ou seja, aqueles que são capazes de monitorar seu comportamento dinâmico, analisálo, propor soluções com certa autonomia e garantir seu funcionamento mesmo quando do aparecimento de falhas que podem comprometer seu comportamento seguro ou sua eficiência. Este trabalho, de maneira
Publicado em: 2010
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3. Modal parameter identification of structures and rotating machine by adaptative filter / Identificação de parametros modais de estruturas e maquinas rotativas atraves da filtragem adaptativa
This work investigates the use of adaptive filters for parameter identification. Although adaptive algorithms are still rarely utilized in the mechanical engineering field, the recursive least square and recursive least square with QR decomposition methods can be implemented based on the second ordinary differential equations in order to characterize the mod
Publicado em: 2007
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4. A percepção de plosivas alveolares na produção de um sujeito com deficiência auditiva: um estudo fonético acústico / The perception of alveolar plosives produced by a hearing-impaired subject: an acoustic phonetic study
Hearing impairment affects speech production and perception. One of the difficulties the hearing-impaired faces is producing/perceiving the contrast between voiced and voiceless sounds, mainly those which are characterized by a total obstruction between articulators such is the case of plosives, which happen to be one of the highest frequency sounds in Portu
Publicado em: 2007
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5. Aeroservoelastic analysis of the blade-sailing phenomenon in the helicopter-ship dynamic interface.
This thesis proposes a Rotary-Wing Aeroservoelasticity approach to the modeling, analysis and control of the blade-sailing phenomenon in the helicopter-ship dynamic interface (DI), based on the identification, response evaluation and control of flow and ship motion induced loads, during the engagement/disengagement flight regimes, in order to establish some
Publicado em: 2007
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6. Ecologia e comportamento do Cuxiú-Preto (Chiropotes Satanas) na paisagem fragmentada da Amazônia Oriental. / The Ecology and Behaviour of the Black Bearded Saki (Chiropotes satanas) in the Fragmented Landscape of Eastern Amazonia
Bearded sakis are frugivores specialised for seed predation. The black bearded saki (Chiropotes satanas) is endemic to a densely populated and deforested area in eastern Amazonia in Brazil and is threatened with extinction. The principal objective of this study was to research the behaviour and ecology of two groups of black bearded sakis living under differ
Publicado em: 2006
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7. PARAMETRIC IDENTIFICATION OF MECHANICAL SYSTEMS USING SUBSPACE ALGORITHMS / IDENTIFICAÇÃO PARAMÉTRICA DE SISTEMAS MECÂNICOS USANDO ALGORITMOS DE SUBESPAÇO
Parametric identification of mechanical systems is one of the main applications of the system identification techniques in Mechanical Engineering, specifically for the identification of modal parameters of flexible structures. One of the main problems in the identification is the presence of noise in the measurements. This work presents an analysis in the pr
Publicado em: 2003
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8. State and parameter estimation based on a nonlinear filter applied to an industrial process control of ethanol production
Most advanced computer-aided control applications rely on good dynamics process models. The performance of the control system depends on the accuracy of the model used. Typically, such models are developed by conducting off-line identification experiments on the process. These experiments for identification often result in input-output data with small output
Brazilian Journal of Chemical Engineering. Publicado em: 2000-12
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9. Analise dos fenomenos sonoros articulares do joelho atraves de processamento digital / Analysis of the knees articular sonorous phenomena using digital processes
The purpose of this study is to investigate the knees articular sonorous phenomena, through arthrosonography, using digital processes. Two hundred and fifteen (215) volunteers, of both sexes, with ages varying between 10 and 75, participated in this study. From this total, 145 volunteers didn t have a historic of articular diseases and 70 had rheumatic disea
Publicado em: 1999
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10. Identification of Cryptosporidium parvum Oocysts by an Artificial Neural Network Approach
Microscopic detection of Cryptosporidium parvum oocysts is time-consuming, requires trained analysts, and is frequently subject to significant human errors. Artificial neural networks (ANN) were developed to help identify immunofluorescently labeled C. parvum oocysts. A total of 525 digitized images of immunofluorescently labeled oocysts, fluorescent microsp
American Society for Microbiology.