Title
A Novel Passive Shoulder Exoskeleton Designed With Variable Stiffness Mechanism
Abstract
With the population of the world getting older and the working period becoming more extended, exoskeletons can be helpful to prevent occupational injuries and provide assistance for physically exhausting works. In this letter, a novel compact passive exoskeleton able to assist the elderly and workers with overhead tasks is introduced. The exoskeleton consists of a spherical shoulder mechanism and a variable stiffness mechanism, the latter being used to compensate torques due to gravity force. Numerical, analytical, and experimental analyses of the variable stiffness mechanism are carried out and compared. Topology optimisation is used to reduce the mass of the device. The final design, able to compensate for 50% of the gravitational torque of the arm with the elbow stretched, was tested and validated experimentally.
Year
DOI
Venue
2022
10.1109/LRA.2022.3144529
IEEE ROBOTICS AND AUTOMATION LETTERS
Keywords
DocType
Volume
Passive exoskeletons, actuation and joint mechanisms, variable stiffness mechanism, spherical shoulder mechanism, design optimisation
Journal
7
Issue
ISSN
Citations 
2
2377-3766
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Felix Balser100.68
Rohan Desai200.68
Alexandros Ekizoglou300.68
Shaoping Bai47417.53