Synthesis by means of genetic algorithms of articulated mechanisms of six rigid bars for knee prostheses

Authors

  • Edward Javier León Lescano Facultad de Ingeniería, Universidad Nacional de Trujillo, Av. Juan Pablo II s/n – Ciudad Universitaria, Trujillo, Perú
  • Nelson Ayala Dionicio Facultad de Ingeniería, Universidad Nacional de Trujillo, Av. Juan Pablo II s/n – Ciudad Universitaria, Trujillo, Perú.
  • Emerson Asto Rodriguez Facultad de Ingeniería, Universidad Nacional de Trujillo, Av. Juan Pablo II s/n – Ciudad Universitaria, Trujillo, Perú.
  • Eddy Urbano Ramos Facultad de Ingeniería, Universidad Nacional de Trujillo, Av. Juan Pablo II s/n – Ciudad Universitaria, Trujillo, Perú

Keywords:

Genetic algorithms, Watt I mechanism, knee replacement

Abstract

Using the method of genetic algorithms, the synthesis process of a Watt I type six-bar flat mechanism is developed and applied to the design of a polycentric knee prosthesis to guarantee stability in the extension and total flexion phase of the knee during the knee. gait cycle of a person. Six precision points of the trajectory of the instantaneous center of rotation of the coupling link were selected, with a population of one thousand individuals formed with the lengths of links and angles of movement of the mechanism. The fitness function was obtained with the Freudenstein equation applied to two four-bar mechanisms that make up the prosthesis and the design restrictions were: minimum and maximum bar dimensions, Grashof criterion, angular relationships for ternary elements, transmission angle and instantaneous inactive joints.

References

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Published

2021-12-01

How to Cite

León Lescano, E. J., Ayala Dionicio, N., Asto Rodriguez, E., & Urbano Ramos, E. (2021). Synthesis by means of genetic algorithms of articulated mechanisms of six rigid bars for knee prostheses. Revista CIENCIA Y TECNOLOGÍA, 17(4), 71-87. Retrieved from https://revistas.unitru.edu.pe/index.php/PGM/article/view/4067

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Artículos Originales