Title :
Nonlinear model of human ankle joint dynamics with electrical muscle stimulation
Author :
Flaherty, B.P. ; Fehr, L. ; Robinson, C.J. ; Agarwal, G.C.
fDate :
Oct. 29 1992-Nov. 1 1992
Abstract :
We examined the dynamic characteristics of the ankle joint during electrical stimulation of the soleus by applying perturbations to ankle position during stimulation. Using experimental data from a population of 10 spinal cord injured (SCI) and 10 neurologically intact (NI) subjects, we developed a nonlinear 5-element model to describe the relationship between joint position, velocity and applied torque. Model parameter values were obtained by modified steepest descent minimization [1] of the squared error between measured and modelled torque.
Keywords :
bioelectric potentials; biomechanics; muscle; neurophysiology; nonlinear dynamical systems; ankle position; electrical muscle stimulation; human ankle joint dynamics; joint position; joint torque; joint velocity; nonlinear five element model; nonlinear model; perturbation; soleus; spinal cord injury; steepest descent minimization; Biomedical engineering; Velocity measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1992 14th Annual International Conference of the IEEE
Conference_Location :
Paris
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1992.5761881
