Design and control of hybrid actuation lower limb exoskeleton

Autor: Hipolito Aguilar-Sierra, Wen Yu, Sergio Salazar, Ricardo Lopez
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Advances in Mechanical Engineering, Vol 7 (2015)
Druh dokumentu: article
ISSN: 1687-8140
16878140
DOI: 10.1177/1687814015590988
Popis: In this article, two types of actuators are applied for a lower limb exoskeleton. They are DC motors with the harmonic drive and the pneumatic artificial muscles. This combination takes advantages of both the harmonic drive and the pneumatic artificial muscle. It provides both high accuracy position control and high ratio of strength and weight. The shortcomings of the two actuators are overcome by the hybrid actuation, for example, low control accuracy and modeling difficult of pneumatic artificial muscle, compactness, and structural flexibility of DC motors. The design and modeling processes are discussed to show the proposed exoskeleton can increase the strength of human lower limbs. Experiments and analysis of the exoskeleton are given to evaluate the effectiveness of the design and modeling.
Databáze: Directory of Open Access Journals