Global Kalman filter approaches to estimate absolute angles of lower limb segments

Biomedical Engineering Online
Samuel L NogueiraJosé L Pons

Abstract

In this paper we propose the use of global Kalman filters (KFs) to estimate absolute angles of lower limb segments. Standard approaches adopt KFs to improve the performance of inertial sensors based on individual link configurations. In consequence, for a multi-body system like a lower limb exoskeleton, the inertial measurements of one link (e.g., the shank) are not taken into account in other link angle estimations (e.g., foot). Global KF approaches, on the other hand, correlate the collective contribution of all signals from lower limb segments observed in the state-space model through the filtering process. We present a novel global KF (matricial global KF) relying only on inertial sensor data, and validate both this KF and a previously presented global KF (Markov Jump Linear Systems, MJLS-based KF), which fuses data from inertial sensors and encoders from an exoskeleton. We furthermore compare both methods to the commonly used local KF. The results indicate that the global KFs performed significantly better than the local KF, with an average root mean square error (RMSE) of respectively 0.942° for the MJLS-based KF, 1.167° for the matrical global KF, and 1.202° for the local KFs. Including the data from the exoskeleton enco...Continue Reading

References

Nov 3, 1998·Prehospital Emergency Care : Official Journal of the National Association of EMS Physicians and the National Association of State EMS Directors·C S KidwellS Starkman
May 24, 2007·IEEE Transactions on Bio-medical Engineering·Daniel RoetenbergPeter H Veltink
Nov 17, 2009·Medical & Biological Engineering & Computing·Andrea Giovanni CuttiAdriano Ferrari
Apr 15, 2010·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Arash SalarianKamiar Aminian
Aug 24, 2011·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Omar Aziz, Stephen N Robinovitch
Apr 17, 2013·Journal of Neuroengineering and Rehabilitation·Juan Álvaro GallegoJosé Luis Pons
Mar 17, 2015·IEEE Transactions on Bio-medical Engineering·Gabriele Ligorio, Angelo M Sabatini
Jun 17, 2015·Journal of Neuroengineering and Rehabilitation·Magdo BortoleJose L Contreras-Vidal
Feb 24, 2016·Sensors·Stefan LambrechtJosé L Pons

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Software Mentioned

MJLS
Vert a
MIMUs
Matlab
- g
custom

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