DEVELOPMENT OF A MYOELECTRIC CONTROLLER BASED ON KNEE ANGLE ESTIMATION

Alberto López Delis, João Luiz Azevedo de Carvalho, Adson Ferreira da Rocha, Francisco Assis de Oliveira Nascimento, Geovany Araújo Borges

Abstract

This paper presents the development of a bioinstrumentation system for the acquisition and pre-processing of surface electromyographic (SEMG) signals, as well as the proposal of a myoelectric controller for leg prostheses, using algorithms for feature extraction and classification of myoelectric patterns. The implemented microcontrolled bioinstrumentation system is capable of recording up to four SEMG channels, and one electrogoniometer channel. The proposed neural myoelectric controller is capable of predicting the intended knee joint angle from the measured SEMG singals. The controller is designed in three stages: feature extraction, using auto-regressive model and amplitude histogram; feature projection, using self organizing maps; and pattern classification, using a Levenberg-Marquadt neural network. The use of SEMG signals and additional mechanical information such as that provided by the electrogoniometer may improve precision in the control of leg prostheses. Preliminary results are presented.

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Paper Citation


in Harvard Style

Delis A., de Carvalho J., da Rocha A., Nascimento F. and Borges G. (2009). DEVELOPMENT OF A MYOELECTRIC CONTROLLER BASED ON KNEE ANGLE ESTIMATION . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009) ISBN 978-989-8111- 64-7, pages 97-103. DOI: 10.5220/0001550600970103


in Bibtex Style

@conference{biodevices09,
author={Alberto López Delis and João Luiz Azevedo de Carvalho and Adson Ferreira da Rocha and Francisco Assis de Oliveira Nascimento and Geovany Araújo Borges},
title={DEVELOPMENT OF A MYOELECTRIC CONTROLLER BASED ON KNEE ANGLE ESTIMATION},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009)},
year={2009},
pages={97-103},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001550600970103},
isbn={978-989-8111- 64-7},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009)
TI - DEVELOPMENT OF A MYOELECTRIC CONTROLLER BASED ON KNEE ANGLE ESTIMATION
SN - 978-989-8111- 64-7
AU - Delis A.
AU - de Carvalho J.
AU - da Rocha A.
AU - Nascimento F.
AU - Borges G.
PY - 2009
SP - 97
EP - 103
DO - 10.5220/0001550600970103