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2016, vol. 14, br. 3, str. 321-328
Biosimilar artificial knee for transfemoral prostheses and exoskeletons
(naslov ne postoji na srpskom)
aSevastopol State University, Sevastopol, Russian Federation
bSt. Petersburg State Technological Institute, St. Petersburg, Russian Federation
cZaporizhzhya National Technical University, Zaporizhzhya, Ukraine

e-adresaa.m.poljakov@sevsu.ru
Projekat:
Project of the Ministry of Education and Science of the Russian Federation, No.115041610028

Ključne reči: transfemoral prosthesis; artificial knee; polycentric hinge mechanism; contact problem with slippage surfaces
Sažetak
(ne postoji na srpskom)
Artificial knees play an important role in transfemoral prostheses, lower extremity exoskeletons and walking robots. Their designs must provide natural kinematics, high strength and stiffness required in the stance phase of gait. Additionally, modern artificial knee is the principal module by means of which the prosthesis control is performed. This paper presents a prototype of an artificial polycentric knee, designed on the basis of the hinge mechanism with cross links. In order to increase strength and stiffness, the elements of the joint have curved supporting surfaces formed in the shape of centroids in relative motion of links of the hinge mechanism. Such construction is a mechanical system with redundant links but it allows for providing desirable characteristics of the artificial knee. Synthesis of the hinge mechanism is made by a method of systematic study of the parameter space, uniformly distributed in a finite dimensional cube. Stiffness of bearing surfaces elements of knee was determined by solving the contact problem with slippage of surfaces relative to each other.

O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.22190/FUME1603321P
objavljen u SCIndeksu: 04.08.2017.

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