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Sliding on Manifolds: Geometric Attitude Control with Quaternions

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arxiv 2011.03648 v1 pith:BZPEODCW submitted 2020-11-07 cs.RO cs.SYeess.SY

Sliding on Manifolds: Geometric Attitude Control with Quaternions

classification cs.RO cs.SYeess.SY
keywords slidingattitudevariablecontroldynamicsfeedbackquaternionsadaptive
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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This 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.

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