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Evaluation of Active Shoulder Exoskeleton Support to Deduce Application-Oriented Optimization Potentials for Overhead Work

Sänger, Johannes ORCID iD icon 1; Yao, Zhejun; Schubert, Tim; Wolf, Alexander; Molz, Carla; Miehling, Jörg; Wartzack, Sandro; Gwosch, Thomas 1; Matthiesen, Sven 1; Weidner, Robert
1 Institut für Produktentwicklung (IPEK), Karlsruher Institut für Technologie (KIT)

Abstract:

Repetitive overhead work with a heavy load increases the risk for work-related shoulder disorders. Occupational exoskeletons supporting arm elevation are potential solutions to reduce that risk by lowering the physical strains on the shoulder. Many studies have reported a reduction in shoulder stress in various overhead tasks by using such exoskeletons. However, the support demand can vary in each phase of motion as well as in each individual task. This paper presents a laboratory study with five participants to evaluate the influence of the support level of an active shoulder exoskeleton in different motion phases (e.g., arm lifting, screw-in, and arm lowering of two overhead tasks) to identify the potential optimization of support at each phase. Results show that the support level of the exoskeleton should be adapted to the motion phase of the two chosen tasks. A higher support force is desired for the screw phase compared to the arm lifting and lowering phases, and the support level needs to be reduced immediately for arm lowering after the screw phase. The time for switching the support levels can be recognized by the electric current of the screwdriver.


Verlagsausgabe §
DOI: 10.5445/IR/1000153268
Veröffentlicht am 02.12.2022
Originalveröffentlichung
DOI: 10.3390/app122110805
Scopus
Zitationen: 6
Dimensions
Zitationen: 8
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Produktentwicklung (IPEK)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2076-3417
KITopen-ID: 1000153268
Erschienen in Applied Sciences (Switzerland)
Verlag MDPI
Band 12
Heft 21
Seiten Art.-Nr.: 10805
Vorab online veröffentlicht am 25.10.2022
Schlagwörter human–machine interaction, biomechanical analysis, sEMG, interaction forces, user experience, power tool, exoskeleton
Nachgewiesen in Web of Science
Scopus
Dimensions
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