Resumen: Trajectory optimization is a complex process that includes an infinite number of possibilities and combinations. This work focuses on a particular aspect of the trajectory optimization, related to the optimization of a velocity along a predefined path, with the aim of minimizing power consumption. To tackle the problem, a functional formulation and minimization strategy is developed, by means of the Euler-Lagrange equation. The minimization is later performed using a neural network approach. The strategy is deemed Lagrange-Net, as it is based on the minimization of the energy functional, by the means of Lagrange's equation and neural network approximations. Idioma: Inglés DOI: 10.3934/dcdss.2023080 Año: 2023 Publicado en: Discrete and continuous dynamical systems. Series S 17, 7 (2023), 2323-2333 ISSN: 1937-1632 Factor impacto JCR: 1.3 (2023) Categ. JCR: MATHEMATICS, APPLIED rank: 124 / 332 = 0.373 (2023) - Q2 - T2 Factor impacto CITESCORE: 3.7 - Discrete Mathematics and Combinatorics (Q1) - Analysis (Q1) - Applied Mathematics (Q2)