Title
Analyzing achievable stiffness control bounds of robotic hands with coupled finger joints.
Abstract
The mechanical design of robotic hands has been converging towards low-inertia, tendon-driven strategies. As tendon driven robotic fingers are serial chain systems, routing strategies with compliant tendons lead to multi-articular coupling between the degrees of freedom. We propose a generalized analysis of such serial chain linkages with coupled passive joint stiffnesses. We analyze the effect of such coupling on maximum achievable stiffness control boundaries while maintaining passivity at the actuators by analytically deriving the boundaries. We believe that we can use this information to form mechanical design guidelines for intelligently selecting arrangements of compliance elements (mechanical springs) and transmission strategies, i.e. tendon routing and pulley radii, to provide intrinsic stability and customizable controller stiffness limits for high performance manipulation in robotic hands.
Year
DOI
Venue
2017
10.1109/ICRA.2017.7989393
ICRA
Field
DocType
Volume
Passivity,Control theory,Coupling,Linkage (mechanical),Torque,Stiffness,Control theory,Control engineering,Engineering,Pulley,Actuator
Conference
2017
Issue
Citations 
PageRank 
1
0
0.34
References 
Authors
14
4
Name
Order
Citations
PageRank
Prashant Rao120.72
Gray C. Thomas2486.31
Luis Sentis357459.74
Ashish D. Deshpande44211.33