Dynamic Calibration of Force Platforms by Means of a Parallel Robot

E. Brau, J. Cazalilla, M. Vallés, A. Besa, A. Valera, V. Mata, A. Page

2013

Abstract

Force platforms are the basic equipment to measure ground reaction forces and moments in biomechanical studies. So, accurate in situ calibration of force platforms is critical for ensuring the accuracy and precision of the results of experimental studies. Although there are different avaliable approaches for in situ calibration, most of the existing methods do not use realistic and repeteable force patterns to calibrate platforms. In this paper is proposed a new technique based on the use of a 3PRS parallel robot for applying a predefined dynamical load, where force patterns can be reproduced in a similar way as the used during actual experimental measures. This robot can be programmed to apply force patterns simulating the conditions of human gait, running or jumping. Calibration is performed by comparing the forces measured by the platform and the ones measured by a calibrated load cell. A new algorithm was used for correcting the sensitivity coefficients, including an estimation of errors in the orientation of the load cell. This method has been validated by means of an experiment

Paper Citation

in Harvard Style

Brau E., Cazalilla J., Vallés M., Besa A., Valera A., Mata V. and Page A. (2013). Dynamic Calibration of Force Platforms by Means of a Parallel Robot . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2013) ISBN 978-989-8565-34-1, pages 132-136. DOI: 10.5220/0004235901320136

in Bibtex Style

@conference{biodevices13,
author={E. Brau and J. Cazalilla and M. Vallés and A. Besa and A. Valera and V. Mata and A. Page},
title={Dynamic Calibration of Force Platforms by Means of a Parallel Robot},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2013)},
year={2013},
pages={132-136},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004235901320136},
isbn={978-989-8565-34-1},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2013)
TI - Dynamic Calibration of Force Platforms by Means of a Parallel Robot
SN - 978-989-8565-34-1
AU - Brau E.
AU - Cazalilla J.
AU - Vallés M.
AU - Besa A.
AU - Valera A.
AU - Mata V.
AU - Page A.
PY - 2013
SP - 132
EP - 136
DO - 10.5220/0004235901320136