Exciting efficient oscillations in nonlinear mechanical systems through Eigenmanifold stabilization
Cosimo Della Santina (TU Delft - Learning & Autonomous Control, Deutsches Zentrum für Luft- und Raumfahrt (DLR), Technische Universität München)
Alin Albu-Schaeffer (Technische Universität München, Deutsches Zentrum für Luft- und Raumfahrt (DLR))
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Abstract
Nonlinear modes are a well investigated concept in dynamical systems theory, extending the celebrated modal analysis of linear mechanical systems to nonlinear ones. The present work moves a first step in the direction of combining control theory and nonlinear modal analysis towards the implementation of hyper-efficient oscillatory behaviors in mechanical systems with non-Euclidean metric. Rather than forcing a prescribed evolution, we first investigate the regular behaviors that can be autonomously expressed by the system, and then we design a controller that excites them. A first implementation of this concept is proposed, analyzed, and tested in simulation.