Title
Exploiting the Morphology of a Shape Memory Spring as the Active Backbone of a Highly Dexterous Tendril Robot (ATBR).
Abstract
Tendrils are common stable structures in nature and are used for sensing, actuation, and geometrical stiffness modulation. In this paper, for the first time we exploit the helical geometry of a shape memory alloy (SMA) tendril as a simple to fabricate highly dexterous robotic continuum tentacle that we called Active Tendril-Backbone Robot (ATBR). This is achieved via partial (120 deg) activation of single helix turns resulting in backbone directional bendings. A 141.5 mm prototype (130 mm when fully compressed) has been fabricated and a simple theoretical framework is proposed and experimentally validated for modeling of the tentacle configuration. The manipulator has five 2-DOF joints capable of reaching bending angles of up to 54.5 deg and angular speed of up to 6.8 deg/s. The dexterity of the manipulator is showcased empirically in reaching complex configurations and simple navigation through confined space of a curving path.
Year
DOI
Venue
2020
10.1109/IROS45743.2020.9341692
IROS
DocType
Citations 
PageRank 
Conference
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Kayode Sonaike100.34
S. M. Hadi Sadati222.40
Christos Bergeles33610.69
Ian D. Walker4245.40