Nonlinearity Identification
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Caracterização e detecção da não linearidade associada à folga em sistemas aeroelásticos / Characterization and detection of freeplay nonlinearity in aeroelastic systems
A caracterização de não linearidades em aeronaves é fundamental para a solução de problemas aeroelásticos, onde uma relação ótima entre desempenho e segurança é desejável. Sistemas aeroelásticos são inerentemente não lineares. Não linearidades podem ser admitidas no projeto, ou podem surgir a qualquer momento durante a vida útil da aeronave
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/08/2012
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2. Sistema e processo para geração, sincronização remota e comparação de sinais temporais precisos / System and process for the generation, remote synchronization and comparison of precise time signals
This thesis present new proposals for time dissemination systems, which were analyzed and implemented as complete solutions providing high resolution in radio links focusing in the requirements of the new geolocation system known as GEOLOCAL. The solutions found are useful for other applications equiring time synchronization. The work has been developed in d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/07/2010
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3. Identificação e caracterização de não-linearidades em dinâmica estrutural / Identification and characterization of nonlinearities in structural dynamics
Esta dissertação tem como objetivo principal realizar uma investigação sobre técnicas de identificação e caracterização de não linearidades em dinâmica estrutural. Em particular, busca-se aplicar as transformadas de Hilbert e Hilbert-Huang na identificação e caracterização de um sistema estrutural composto de uma viga metálica em balanço com
Publicado em: 2008
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4. â Se pudesse ressurgir eu viria como o ventoâ: Das narrativas da dor, um estudo sobre prÃticas de modificaÃÃes corporais e afetividades na ExperiÃncia da Travestilidade / âIf I could resurrect I would come as the windâ: From narratives of pain, a study on the practice of corporal modification and affective in the transvestite experience
Since modern times, occidental contemporary societies have been suggesting a self âpollutingâ imaginary, primarily through the institutionalization of heterosexuality; of the ânaturalizingâ atmosphere of sexed-bodies; and from the medicinal and judiciary discourse, which infers the normal and the abnormal. Transvestites seem to find themselves on the lim
Publicado em: 2008
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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. STATIC AND DYNAMIC INSTABILITY OF PLANE FRAMES WITH SEMI-RIGID CONNECTIONS / INSTABILIDADE ESTÁTICA E DINÂMICA DE PÓRTICOS PLANOS COM LIGAÇÕES SEMI-RÍGIDAS
The main objective of this thesis is to develop a numerical methodology for the nonlinear static and dynamics analysis of plane frames with semi-rigid connections. Initially, the formulations of the adopted finite elements are presented and implemented together with numerical methodologies for the solution of the non-linear equilibrium equations. Then, some
Publicado em: 2004
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7. Identificação de processos dinamicos não lineares : desenvolvimento de software e aplicação a uma coluna fracionadora de eteno
This paper describes the methodology used in the identification and development of petrochemical non-linear dynamic models. In the present study were used techniques of: data handling; process control; optimization and neural networks. A software tool was developed in order to automate of the procedures. On the other hand, the methodology was tested using an
Publicado em: 2003
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8. Identificação e controle de processos não lineares utilizando redes neurais artificiais
Considering that most of the industrial processes of interest to Chemical Engineering present a certain degree of inherent non-linearity or one introduced by systems of automatic control, an important necessity of inquiring about the performance the new techniques derived from artificial intelligence, whose interest here is in the artificial neural networks,
Publicado em: 2001
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9. Measurement of MRI scanner performance with the ADNI phantom
The objectives of this study are as follows: to describe practical implementation challenges of multisite, multivendor quantitative studies; to describe the MRI phantom and analysis software used in the Alzheimer’s Disease Neuroimaging Initiative (ADNI) study, illustrate the utility of the system for measuring scanner performance, the ability to assess gra
American Association of Physicists in Medicine.
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10. Functional identification of the input-output transforms of motoneurones in the rat and cat.
1. We studied the responses of rat hypoglossal and cat lumbar motoneurones to a variety of excitatory and inhibitory injected current transients during repetitive discharge. The amplitudes and time courses of the transients were comparable to those of the synaptic currents underlying unitary and small compound postsynaptic potentials (PSPs) recorded in these