Title
Virtual and physical prototyping of a beam-based variable stiffness actuator for safe human-machine interaction
Abstract
•The design of an antagonistic Variable Stiffness Actuator (VSA) is presented. With the specific aim of overcoming the limits of a previous solution proposed by the Authors, this new VSA makes use of beam-based Compliant Transmission Elements (CTEs), allowing for larger deflections and thus extending the VSA stiffness variability range.•A multi software framework is used as an effective way to optimize the shape of such CTEs in a limited number of iterations.•CTE specimens are produced and tested via a custom test rig for validation purposes.•In order to compensate for the CTE’s hysteresis, along with other unmodeled effects (i.e. static and dynamic friction), a robust control algorithm for simultaneous regulation of both joint position and stiffness is proposed.•A physical prototype of the actuator is fabricated, assembled and tested.
Year
DOI
Venue
2020
10.1016/j.rcim.2019.101886
Robotics and Computer-Integrated Manufacturing
Keywords
DocType
Volume
Variable stiffness actuators,Compliant mechanisms,Shape optimization,Multi software framework,Sliding mode controller
Journal
65
ISSN
Citations 
PageRank 
0736-5845
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Pietro Bilancia101.69
Giovanni Berselli2417.08
Gianluca Palli326829.98