A Maximum Principle for a Time-Optimal Bilevel Sweeping Control Problem

Fernando Lobo Pereira () and Nathalie T. Khalil
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Fernando Lobo Pereira: Porto University
Nathalie T. Khalil: Porto University

Journal of Optimization Theory and Applications, 2022, vol. 192, issue 3, No 11, 1022-1051

Abstract: Abstract In this article, we investigate a time-optimal state-constrained bilevel optimal control problem whose lower-level dynamics feature a sweeping control process involving a truncated normal cone. By bilevel, it is meant that the optimization of the upper level problem is carried out over the solution set of the lower level problem.This problem instance arises in structured crowd motion control problems in a confined space. We establish the corresponding necessary optimality conditions in the Gamkrelidze’s form. The analysis relies on the smooth approximation of the lower level sweeping control system, thereby dealing with the resulting lack of Lipschitzianity with respect to the state variable inherent to the sweeping process, and on the flattening of the bilevel structure via an exact penalization technique. Necessary conditions of optimality in the Gamkrelidze’s form are applied to the resulting standard approximating penalized state-constrained single-level problem, and the main result of this article is obtained by passing to the limit.

Keywords: Optimal control theory; State constraint; Sweeping process; Bilevel optimization; Control of constrained systems; Exact penalization; 49K15; 49K99; 49J52 (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s10957-022-02004-3

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