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IJAT Vol.11 No.3 pp. 442-449
doi: 10.20965/ijat.2017.p0442
(2017)

Paper:

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Elbow Musculoskeletal Model for Industrial Exoskeleton with Modulated Impedance Based on Operator’s Arm Stiffness

Daniele Borzelli†, Stefano Pastorelli, and Laura Gastaldi

Politecnico di Torino
Corso Duca degli Abruzzi 24, 10129 Torino, Italy

†Corresponding author

Received:
October 1, 2016
Accepted:
April 10, 2017
Online released:
April 28, 2017
Published:
May 5, 2017
Creative Commons License
Keywords:
arm stiffness, hill muscle model, elbow model, exoskeleton
Abstract
With the ageing of the workforce in the manufacturing industry, the possibility of introducing support aids such as exoskeletons to reduce the fatigue and effort of the operator has to be evaluated. An upper-limb exoskeleton with controlled impedance is expected to reduce the discomfort in the operations which require precision. Hence, arm joint stiffening is required. Real-time calculation of the exoskeleton impedance should be based on the operator’s limb impedance, evaluated through electromyographic signals. A model of the operator’s arm is necessary to identify the best control law for the exoskeleton. In this paper, preliminary considerations and a model of the elbow on which two muscles act as agonist-antagonist are presented. Numerical results are discussed, and an estimation of the performance is also proposed.
Cite this article as:
D. Borzelli, S. Pastorelli, and L. Gastaldi, “Elbow Musculoskeletal Model for Industrial Exoskeleton with Modulated Impedance Based on Operator’s Arm Stiffness,” Int. J. Automation Technol., Vol.11 No.3, pp. 442-449, 2017.
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