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Singular extremals in L^1 optimal control problems: sufficient optimality conditions

In this paper we are concerned with generalised L 1-minimisation problems, i.e. Bolza problems involving the absolute value of the control with a control-affine dynamics. We establish sufficient conditions for the strong local optimality of extremals given by the concatenation of bang, singular and inactive (zero) arcs. The sufficiency of such conditions is proven by means of Hamiltonian methods. As a byproduct of the result, we provide an explicit invariant formula for the second variation along the singular arc.

preprint2021arXivOpen access
Francesca ChittaroLaura Poggiolini
math.OC
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Francesca ChittaroLaura Poggiolini

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