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- W4297785478 abstract "In this paper we develop a novel, discrete-time optimal control framework for mechanical systems with uncertain model parameters. We consider finite-horizon problems where the performance index depends on the statistical moments of the stochastic system. Our approach constitutes an extension of the original Differential Dynamic Programming method and handles uncertainty through generalized Polynomial Chaos (gPC) theory. The developed iterative scheme is capable of controlling the probabilistic evolution of the dynamic system and can be used in planning and control. Moreover, its scalable and fast converging nature play a key role when dealing with complex, high-dimensional problems. Based on Lagrangian mechanics principles, we also prove that Variational Integrators can be designed to properly propagate and linearize the gPC representations of stochastic, forced mechanical systems in discrete time. We utilize this benefit to further improve the efficiency of our trajectory-optimization methodology. Numerical simulations are included to validate the applicability of our approach." @default.
- W4297785478 created "2022-10-01" @default.
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- W4297785478 date "2017-05-15" @default.
- W4297785478 modified "2023-09-27" @default.
- W4297785478 title "Stochastic trajectory optimization for mechanical systems with parametric uncertainties" @default.
- W4297785478 doi "https://doi.org/10.48550/arxiv.1705.05506" @default.
- W4297785478 hasPublicationYear "2017" @default.
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