Title
KUKA LWR Robot Cartesian Stiffness Control Based on Kinematic Redundancy.
Abstract
This paper is dealing with one important topic for physical human-robot interaction, and that is achieving and/or optimizing of an arbitrary Cartesian stiffness of robot's end-effector (EE). The focus is given on redundant compliant robots with serial elastic actuators with fixed joint stiffness, but can reconfigure without changing the EE position. The work presented in this paper is an approach where the robot redundancy is exploited to achieve the desired or at least some optimal Cartesian stiffness of robots EE. Robot tasks can be divided into primary and secondary tasks. In our case, the primary task is to track the Cartesian position reference and the secondary task is to optimize EE Cartesian stiffness behavior while keeping the desired EE position. This means that the EE position is a constraint in the robot Cartesian stiffness optimization. The algorithm for the Cartesian stiffness optimization has been initially tested using the simulation, and then evaluated on the 7-DOFs KUKA light weight robot.
Year
DOI
Venue
2019
10.1007/978-3-030-19648-6_36
ADVANCES IN SERVICE AND INDUSTRIAL ROBOTICS
Keywords
DocType
Volume
Cartesian stiffness control,Robot redundancy,Null space,Physical human-robot interaction
Conference
980
ISSN
Citations 
PageRank 
2194-5357
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Branko Lukic100.68
Tadej Petric217820.60
Leon Zlajpah310016.58
Kosta Jovanović4166.50