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19 January 2022
  » arxiv » 2011.03648

 Article overview

Sliding on Manifolds: Geometric Attitude Control with Quaternions
Brett T. Lopez ; Jean-Jacques E. Slotine ;
Date 7 Nov 2020
AbstractThis work proposes a quaternion-based sliding variable that describes exponentially convergent error dynamics for any forward complete desired attitude trajectory. The proposed sliding variable directly operates on the non-Euclidean space formed by quaternions and explicitly handles the double covering property to enable global attitude tracking when used in feedback. In-depth analysis of the sliding variable is provided and compared to others in the literature. Several feedback controllers including nonlinear PD, robust, and adaptive sliding control are then derived. Simulation results of a rigid body with uncertain dynamics demonstrate the effectiveness and superiority of the approach.
Source arXiv, 2011.03648
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