"Controlabilidade do rolamento de uma esfera sobre uma superfície de revolução" / Controllability of the rolling of a ball over a surface of revolution
AUTOR(ES)
Laura Maria da Cunha Canto Oliva Biscolla
DATA DE PUBLICAÇÃO
2005
RESUMO
This work starts by presenting the classical concepts of rolling (without slipping and without slipping or twisting) of a surface over another one, using the Darboux referential frames of the two surfaces along their contact curves. It shows the equivalence between these concepts with other definitions. In the sequel one studies the controllability in the rolling problem of a ball over a surface of revolution S, including both: the non slipping and the non slipping or twisting cases; controllability aims to determine the reachability between two states of the ball (position on S and orientation), that is, two elements of the configuration space S × SO(3). It follows by establishing conditions on controls in order that the rollings occur along geodesics of S and by studying the controllability in this situation. Finally, it is shown that if S is the plane, 3 or 4 retilinear moves without slipping or twisting are enough to guarantee reachability between two states of the ball.
ASSUNTO(S)
rolling superfície de revolução esfera controllability rolamento ball surface of revolution controlabilidade
