The invention discloses an action state evaluation method and
system based on a time-varying
muscle synergistic effect. According to the method, a
muscle synergistic effect matrix of standard walking actions, a standard
reference range of a scaling coefficient and a time
delay parameter and a classifier for action
state recognition are constructed, then real-time surface electromyogram signals of a target individual are collected in a real-time stage, and the
muscle synergistic effect matrix is extracted; calculating a second similarity index with a muscle synergistic effect matrix of a standard walking action; and inputting the second similarity index into the classifier, if the second similarity index is identified as a'moving 'state, performing an action state evaluation process, otherwise, re-collecting the real-time surface electromyogram
signal of the next window. According to the method, the time-varying muscle synergistic effect model is adopted, and the time dimension is introduced, so that the dynamic change in the whole
muscle activation process can be more accurately captured; meanwhile, the
muscle activation process is modeled from the source, whether the action is completed or not is reflected, and more attention is paid to physiological rationality and control strategies.