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Optimal control problems on parallelizable Riemannian manifolds: theory and applications

Published online by Cambridge University Press:  15 December 2005

Ram V. Iyer
Affiliation:
Department of Mathematics and Statistics, Texas Tech University, Lubbock, TX 79409, USA; ram.iyer@ttu.edu
Raymond Holsapple
Affiliation:
Department of Mathematics and Statistics, Texas Tech University, Lubbock, TX 79409, USA; ram.iyer@ttu.edu
David Doman
Affiliation:
U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7531, USA.
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Abstract

The motivation for this work is the real-time solution of a standard optimal control problem arising in robotics and aerospace applications. For example, the trajectory planning problem for air vehicles is naturally cast as an optimal control problem on the tangent bundle of the Lie Group SE(3), which is also a parallelizable Riemannian manifold. For an optimal control problem on the tangent bundle of such a manifold, we use frame co-ordinates and obtain first-order necessary conditions employing calculus of variations. The use of frame co-ordinates means that intrinsic quantities like the Levi-Civita connection and Riemannian curvature tensor appear in the equations for the co-states. The resulting equations are singularity-free and considerably simpler (from a numerical perspective) than those obtained using a local co-ordinates representation, and are thus better from a computational point of view. The first order necessary conditions result in a two point boundary value problem which we successfully solve by means of a Modified Simple Shooting Method.

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2006

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