Fusion of spectral models for dynamic modeling of sEMG and skeletal muscle force.
In this paper, we present a method of combining spectral models using a Kullback Information Criterion (KIC) data fusion algorithm. Surface Electromyographic (sEMG) signals and their corresponding skeletal muscle force signals are acquired from three sensors and pre-processed using a Half-Gaussian filter and a Chebyshev Type- II filter, respectively. Spectral models - Spectral Analysis (SPA), Empirical Transfer Function Estimate (ETFE), Spectral Analysis with Frequency Dependent Resolution (SPFRD) - are extracted from sEMG signals as input and skeletal muscle force as output signal. These signals are then employed in a System Identification (SI) routine to establish the dynamic models relating the input and output. After the individual models are extracted, the models are fused by a probability based KIC fusion algorithm. The results show that the SPFRD spectral models perform better than SPA and ETFE models in modeling the frequency content of the sEMG/skeletal muscle force data.
Measurement and Control Engineering Research Center (MCERC), Idaho State University, Pocatello, ID 83201, USA. potlchan@isu.edu
Chandrasekhar
C
Potluri
Madhavi
M
Anugolu
Steve
S
Chiu
Alex
A
Urfer
Marco P
MP
Schoen
D Subbaram
DS
Naidu
D000465:Algorithms; D001696:Biomechanical Phenomena; D004576:Electromyography; D006801:Humans; D009119:Muscle Contraction / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology*