Enhanced Visual Predictive Control Scheme for Mobile Manipulator
Résumé
This paper proposes a multi-camera visual pre-
dictive control strategy for a mobile manipulator allowing to
position the end-effector camera with respect to a landmark.
Several issues are considered: (i) the visual landmark possible
loss during navigation, (ii) the realization of large displacements
which implies a large prediction horizon and impacts the closed-
loop stability, (iii) the robot’s high redundancy which may lead
to a large search space and potential non-relevant solutions, (iv)
the processing time. To cope with these challenges, the proposed
strategy relies on (i) the use of two complementary cameras,
(ii) the definition of a cost function depending on both the
vision-based task and the manipulability, (iii) the integration of
constraints allowing to prioritize the former against the latter.
The strategy has been simulated and compared using ROS and
Gazebo, showing its efficiency.
Domaines
Automatique / RobotiqueOrigine | Fichiers produits par l'(les) auteur(s) |
---|