Experimental methodology for the obtaining of the hydrodynamic parameters of VSNT JAHU II, based in digital image processing. / Metodologia experimental para obtenção dos parâmetros hidrodinâmicos do VSNT JAHU II, baseado em processamento digital de imagens.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Unmanned underwater vehicles they have been used continually by the planet in spite of the difficulties of your operation, both for scientific observation, but also for monitoring of engineering works. The positions of these vehicles are controlled, in general, which makes manually they work long and tiring to their pilots. An alternative that simplifies this operation is the use of an automatic system of position to relieve the pilot of basic functions. For the development of an efficient of automatic positioning system it is necessary a mathematical model of the vehicle, it is necessary the knowledge of the hydrodynamic parameters that characterize the behavior of the vehicle. Those parameters are difficult to obtain through theoretical procedures, in cases where the vehicle possesses complex forms, and then experimental methods are used. In Faculdade de Tecnologia de Jahu it comes the developing since 1999 the second version of an unmanned underwater vehicle for use in fluvial environments denominated VSNT JAÚ II. This work proposes the use of an experimental method for the obtaining of some of the hydrodynamic coefficients of the Vehicle, based on rehearsals of free decay, using a model in reduced scale and techniques of digital image processing. The proposed procedure separates the movements of the vehicle in two plans, vertical and horizontal, considering joining terms in the movements in those plans.

ASSUNTO(S)

hidrodinâmica (parâmetros) hydrodynamic parameters submersíveis não tripulados unmanned underwater vehicles digital image processing processamento digital de imagens

ACESSO AO ARTIGO

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