Kinematic-model-free redundancy resolution using multi-point tracking and control for robot manipulation
File(s)applsci-11-04746-v2.pdf (6.03 MB)
Published version
Author(s)
AlAttar, Ahmad
Cursi, Francesco
Kormushev, Petar
Type
Journal Article
Abstract
Abstract: Robots have been predominantly controlled using conventional control methods that require prior knowledge of the robots’ kinematic and dynamic models. These controllers can be challenging to tune and cannot directly adapt to changes in kinematic structure or dynamic properties. On the other hand, model-learning controllers can overcome such challenges.Our recently proposed model-learning orientation controller has shown promising ability to simul6 taneously control a three-degrees-of-freedom robot manipulator’s end-effector pose. However, this controller does not perform optimally with robots of higher degrees-of-freedom nor does it resolve redundancies. The research presented in this paper extends the state-of-the-art kinematic9 model-free controller to perform pose control of hyper-redundant robot manipulators and resolve redundancies by tracking and controlling multiple points along the robot’s serial chain. The results show that with more control points, the controller is able to reach desired poses in fewer steps, yielding an improvement of up to 66%, and capable of achieving complex configurations. The algorithm was validated by running the simulation 100 times and it was found that 82% of the times the robot successfully reached the desired target pose within 150 steps.
Date Issued
2021-05-21
Date Acceptance
2021-05-20
Citation
Applied Sciences, 2021, 11 (11), pp.1-15
ISSN
2076-3417
Publisher
MDPI AG
Start Page
1
End Page
15
Journal / Book Title
Applied Sciences
Volume
11
Issue
11
Copyright Statement
© 2021 by the authors.
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.mdpi.com/2076-3417/11/11/4746
Publication Status
Published
Date Publish Online
2021-05-21