In:
PLOS ONE, Public Library of Science (PLoS), Vol. 17, No. 8 ( 2022-8-3), p. e0272118-
Abstract:
In this paper, an aliasing noise restraint technique and a system identification-based surface electromyography (sEMG)-force prediction model are proposed to realize a type of robust sEMG and muscle force prediction. For signal denoising, a novel non-negative matrix factorization screening empirical mode decomposition (NMFSEMD) and a fast orthogonal search (FOS)-based muscle force prediction model are developed. First, the NMFSEMD model is used to screen the empirical mode decomposition (EMD) results into the noisy intrinsic mode functions (IMF). Then, the noise matrix is computed using IMF translation and superposition, and the matrix is used as the input of NMF to obtain the denoised IMF. Furthermore, the reconstruction outcome of the NMFSEMD method can be used to estimate the denoised sEMG. Finally, a new sEMG muscle force prediction model, which considers a kind of candidate function in derivative form, is constructed, and a data-training-based linear weighted model is obtained. Extensive experimental results validate the suggested method’s correction: after the NMFSEMD denoising of raw sEMG signal, the signal-noise ratio (SNR) can be improved by about 15.0 dB, and the energy percentage (EP) can be greater than 90.0%. Comparing with the muscle force prediction models using the traditional pretreatment and LSSVM, and the NMFSEMD plus LSSVM-based method, the mean square error (MSE) of our approach can be reduced by at least 1.2%.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0272118
DOI:
10.1371/journal.pone.0272118.g001
DOI:
10.1371/journal.pone.0272118.g002
DOI:
10.1371/journal.pone.0272118.g003
DOI:
10.1371/journal.pone.0272118.g004
DOI:
10.1371/journal.pone.0272118.g005
DOI:
10.1371/journal.pone.0272118.g006
DOI:
10.1371/journal.pone.0272118.g007
DOI:
10.1371/journal.pone.0272118.g008
DOI:
10.1371/journal.pone.0272118.t001
DOI:
10.1371/journal.pone.0272118.t002
DOI:
10.1371/journal.pone.0272118.t003
DOI:
10.1371/journal.pone.0272118.t004
DOI:
10.1371/journal.pone.0272118.t005
DOI:
10.1371/journal.pone.0272118.s001
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2022
detail.hit.zdb_id:
2267670-3
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