Abstract
Surface-Electromyograms (sEMG) are directly correlated to the contraction of muscle and they are used as a index of occurrence of muscle tension in sports or rehabilitation. However sEMG is affected with individual features or experiment condition, so it is difficult to compare sEMG directly. The purpose of this research is to propose a method to estimate the active joint torque with related muscle's sEMG. The joint torque can be used as an index of training effect, to control prosthetics or power-assist systems. We measured sEMG of 4 muscles of subjects while moving the elbow joint with variable load. We propose polynomial non-linear model the relationship between sEMG and joint torque and predict the joint torque with the model.
