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Calibration and Validation of a Skeletal Multibody Model for Leg-Orthosis Contact Force Estimation

  • Francisco Mouzo
  • Urbano Lugris
  • Javier Cuadrado
  • Josep M. Font-Llagunes
  • Francisco J. Alonso
Conference paper
Part of the Biosystems & Biorobotics book series (BIOSYSROB, volume 22)

Abstract

Estimation of contact forces between lower limb and orthosis during gait is useful to prevent skin issues in subjects wearing this type of assistive devices. While inverse-dynamics based gait analysis of multibody models is difficult to apply due to the limited accuracy of motion capture systems, a forward-dynamics based analysis in which leg and orthosis are considered as independent entities is shown to provide acceptable results. Contact model parameters are calibrated through comparison of measured and calculated bending torque at the orthosis location where a load cell is installed, and the attained correlation allows to validate the model.

References

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Francisco Mouzo
    • 1
  • Urbano Lugris
    • 1
  • Javier Cuadrado
    • 1
  • Josep M. Font-Llagunes
    • 2
  • Francisco J. Alonso
    • 3
  1. 1.Laboratory of Mechanical EngineeringUniversity of La CoruñaFerrolSpain
  2. 2.Department of Mechanical Engineering and the Biomedical Engineering Research CentreTechnical University of CataloniaBarcelonaSpain
  3. 3.Department of Mechanical, Energetics and Materials EngineeringUniversity of ExtremaduraBadajozSpain

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