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Article Dans Une Revue ESAIM: Control, Optimisation and Calculus of Variations Année : 2001

Asymptotics of accessibility sets along an abnormal trajectory

Résumé

We describe precisely, under generic conditions, the contact of the accessibility set at time $T$ with an abnormal direction, first for a single-input affine control system with constraint on the control, and then as an application for a sub-Riemannian system of rank 2. As a consequence we obtain in sub-Riemannian geometry a new splitting-up of the sphere near an abnormal minimizer $\gamma$ into two sectors, bordered by the first Pontryagin's cone along $\gamma$, called the $\xLinfty$-sector and the $\xLtwo$-sector. Moreover we find again necessary and sufficient conditions of optimality of an abnormal trajectory for such systems, for any optimization problem.
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Dates et versions

hal-00086290 , version 1 (18-07-2006)

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Emmanuel Trélat. Asymptotics of accessibility sets along an abnormal trajectory. ESAIM: Control, Optimisation and Calculus of Variations, 2001, 6, pp.387--414. ⟨hal-00086290⟩
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