Dynamic Feedback Linearization of Control Systems with Symmetry

Fuente: arXiv
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Autori principali: Clelland, Jeanne N., Klotz, Taylor J., Vassiliou, Peter J.
Natura: Preprint
Pubblicazione: 2021
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author Clelland, Jeanne N.
Klotz, Taylor J.
Vassiliou, Peter J.
author_facet Clelland, Jeanne N.
Klotz, Taylor J.
Vassiliou, Peter J.
contents Control systems of interest are often invariant under Lie groups of transformations. For such control systems, a geometric framework based on Lie symmetry is formulated, and from this a sufficient condition for dynamic feedback linearizability obtained. Additionally, a systematic procedure for obtaining all the smooth, generic system trajectories is shown to follow from the theory. Besides smoothness and the existence of symmetry, no further assumption is made on the local form of a control system, which is therefore permitted to be fully nonlinear and time varying. Likewise, no constraints are imposed on the local form of the dynamic compensator. Particular attention is given to the consideration of geometric (coordinate independent) structures associated to control systems with symmetry. To show how the theory is applied in practice we work through illustrative examples of control systems, including the vertical take-off and landing system, demonstrating the significant role that Lie symmetry plays in dynamic feedback linearization. Besides these, a number of more elementary pedagogical examples are discussed as an aid to reading the paper. The constructions have been automated in the Maple package DifferentialGeometry.
format Preprint
id arxiv_https___arxiv_org_abs_2103_05078
institution arXiv
publishDate 2021
record_format arxiv
spellingShingle Dynamic Feedback Linearization of Control Systems with Symmetry
Clelland, Jeanne N.
Klotz, Taylor J.
Vassiliou, Peter J.
Optimization and Control
Analysis of PDEs
Differential Geometry
53A55, 58A17, 58A30, 93C10
Control systems of interest are often invariant under Lie groups of transformations. For such control systems, a geometric framework based on Lie symmetry is formulated, and from this a sufficient condition for dynamic feedback linearizability obtained. Additionally, a systematic procedure for obtaining all the smooth, generic system trajectories is shown to follow from the theory. Besides smoothness and the existence of symmetry, no further assumption is made on the local form of a control system, which is therefore permitted to be fully nonlinear and time varying. Likewise, no constraints are imposed on the local form of the dynamic compensator. Particular attention is given to the consideration of geometric (coordinate independent) structures associated to control systems with symmetry. To show how the theory is applied in practice we work through illustrative examples of control systems, including the vertical take-off and landing system, demonstrating the significant role that Lie symmetry plays in dynamic feedback linearization. Besides these, a number of more elementary pedagogical examples are discussed as an aid to reading the paper. The constructions have been automated in the Maple package DifferentialGeometry.
title Dynamic Feedback Linearization of Control Systems with Symmetry
topic Optimization and Control
Analysis of PDEs
Differential Geometry
53A55, 58A17, 58A30, 93C10
url https://arxiv.org/abs/2103.05078