Title
Neural Network Design for Manipulator Collision Detection Based Only on the Joint Position Sensors
Abstract
In this paper, a multilayer feedforward neural network (NN) is designed and trained, for human-robot collisions detection, using only the intrinsic joint position sensors of a manipulator. The topology of one NN is designed considering the coupled dynamics of the robot and trained, with and without external contacts, by Levenberg-Marquardt algorithm to detect unwanted collisions of the human operator with the manipulator and the link that is collided. The proposed approach could be applied to any industrial robot, where only the joint position signals are available. The designed NN is compared quantitatively and qualitatively with an NN, where both the intrinsic joint position and the torque sensors of the manipulator are used. The proposed method is evaluated experimentally with the KUKA LWR manipulator, which is considered as an example of the collaborative robots, using two of its joints in a planar horizontal motion. The results illustrate that the developed system is efficient and fast to detect the collisions and identify the collided link.
Year
DOI
Venue
2020
10.1017/S0263574719000985
ROBOTICA
Keywords
DocType
Volume
Joints dynamics,Robot collision detection,Collided link identification,Neural networks,Intrinsic sensors
Journal
38
Issue
ISSN
Citations 
SP10
0263-5747
2
PageRank 
References 
Authors
0.42
0
3
Name
Order
Citations
PageRank
Abdel-Nasser Sharkawy182.24
Panagiotis N. Koustoumpardis2165.97
Nikos A. Aspragathos324337.69