dc.contributor.authorTagliamonte, Nevio Luigi
dc.contributor.authorValentini, Simona
dc.contributor.authorSudano, Angelo
dc.contributor.authorPortaccio, Iacopo
dc.contributor.authorDe Leonardis, Chiara
dc.contributor.authorFormica, Domenico
dc.contributor.authorAccoto, Dino
dc.identifier.citationTagliamonte, N. L., Valentini, S., Sudano, A., Portaccio, I., De Leonardis, C., Formica, D., & Accoto, D. (2019). Switching Assistance for Exoskeletons During Cyclic Motions. Frontiers in Neurorobotics, 13, 41-. doi:10.3389/fnbot.2019.00041en_US
dc.description.abstractThis paper proposes a novel control algorithm for torque-controlled exoskeletons assisting cyclic movements. The control strategy is based on the injection of energy parcels into the human-robot system with a timing that minimizes perturbations, i.e., when the angular momentum is maximum. Electromyographic activity of main flexor-extensor knee muscles showed that the proposed controller mostly favors extensor muscles during extension, with a statistically significant reduction in muscular activity in the range of 10–20% in 60 out of 72 trials (i.e., 83%), while no effect related to swinging speed was recorded (speed variation was lower than 10% in 92% of the trials). In the remaining cases muscular activity increment, when statistically significant, was less than 10%. These results showed that the proposed algorithm reduced muscular effort during the most energetically demanding part of the movement (the extension of the knee against gravity) without perturbing the spatio-temporal characteristics of the task and making it particularly suitable for application in exoskeleton-assisted cyclic motions.en_US
dc.format.extent13 p.en_US
dc.relation.ispartofseriesFrontiers in Neuroroboticsen_US
dc.rights© 2019 Tagliamonte, Valentini, Sudano, Portaccio, De Leonardis, Formica and Accoto. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en_US
dc.subjectAssistive Exoskeletonen_US
dc.subjectAdaptive Controlleren_US
dc.subjectEngineering::Mechanical engineeringen_US
dc.titleSwitching assistance for exoskeletons during cyclic motionsen_US
dc.typeJournal Article
dc.contributor.researchRobotics Research Centreen_US
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.description.versionPublished versionen_US

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