Influence of input data errors on the inverse dynamics analysis of human locomotion
View/Open
Article IMSD (361,3Kb) (Restricted access)
Request copy
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Document typeConference lecture
Defense date2010
Rights accessRestricted access - publisher's policy
Except where otherwise noted, content on this work
is licensed under a Creative Commons license
:
Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Inverse dynamic techniques are used in gait analysis to calculate the net joint moments that the musculoskeletal
system produces during human locomotion. Errors present in the input data may affect
significantly the results of the inverse dynamics problem. In this work, the influence of inaccuracies in
body segment parameters (BSP) and ground reaction force measurements on the obtained results is
analyzed. The uncertainties in these data are computer-generated as perturbations added to their actual
values. On the one hand, the uncertainties in BSP are modelled as statistical errors using zero-mean
Gaussian distributions. On the other hand, inaccurate ground reaction forces are represented adding a
percentage of error to the theoretical force. Errors present in the ground reaction forces allow to estimate
the uncertainty introduced to the analysis when ambiguous force plate measurements are used as input
parameters. The paper presents detailed results and discussions to quantify the effects of the above errors
on the inverse dynamics analysis. The several simulations carried out show that the results are more
sensitive to errors in the ground contact forces –when these are used– than in the body inertial parameters.
CitationPàmies-Vilà, R. [et al.]. Influence of input data errors on the inverse dynamics analysis of human locomotion. A: International Conference on Multibody System Dynamics. "1st International Conference on Multibody System Dynamics". Lappeenranta: 2010, p. 37-38.
ISBN978-952-214-778-3
Publisher versionhttp://www.imsd10.fi
Files | Description | Size | Format | View |
---|---|---|---|---|
Pamies_Font_Cuadrado_Alonso_paper.pdf![]() | Article IMSD | 361,3Kb | Restricted access |