Modeling Ideal k and c Value for Lower Knee Prosthetic Leg Using Spring-Damper Model with MATLAB

EasyChair Preprint 11746

Abstract

Prosthetic leg are designed to allow people who have lost their leg due to disability or amputation to regain mobility. To achieve this functionality, prosthetic legs must be designed to imitate the behavior and flexibility of real leg. In order to imitate the flexibility of a real leg, a prosthetic leg needs to be modeled with a spring and damper system. This paper aims to design an optimal lower knee prosthetic leg by determining the spring constant and damping coefficient values that can achieve ideal critical damping response with a damping ratio of 1.0 for various body mass and specific activity usage. The method used includes the formulation of system dynamics from a spring and damper model which is simulated using MATLAB. The results of ideal value of spring constant and damping coefficient are presented in the form of graphs, system performance metrics, and system response analysis.

Keyphrases: MATLAB, Prosthetic leg, body mass, spring damper

@booklet{EasyChair:11746,
  author    = {Fauzan Dharmawan and Putri Wulandari and Ahmad Chirzun},
  title     = {Modeling Ideal k and c Value for Lower Knee Prosthetic Leg Using Spring-Damper Model with MATLAB},
  howpublished = {EasyChair Preprint 11746},
  year      = {EasyChair, 2024}}