METHOD AND SYSTEM FOR DECOMPOSING SUPERIMPOSED GROUND REACTION FORCES INTO INDIVIDUAL FORCE PROFILES

摘要

A method for decomposing a GRF into individual force profiles, comprising: receiving a global GRF measured while a subject performs at least one movement on the force platform, the movement comprising at least two motion configurations; identifying individual time regions contained in the time measurement of the global GRF and assigning a respective one of the at least two motion configurations to each time region using a logical order of motion configurations and an identification of a reference motion configuration; for each time region, determining an individual GRF for each one of the at least two support contacts using the identification of the motion configuration for the time region and the global GRF, thereby determining a contribution of each one of the at least two support contacts to the global GRF; and outputting the individual GRFs.

主权项

1. A computer-implemented method for decomposing a ground reaction force (GRF) into individual force profiles, comprising:
receiving a time measurement of a global GRF measured while a subject having two support contacts for abutting a force platform performs at least one movement on the force platform, the movement comprising at least two motion configurations and each motion configuration being characterized by a respective number of said two support contacts being in physical contact with the force platform; identifying individual time regions contained in the time measurement of the global GRF and assigning a respective one of the at least two motion configurations to each time region using a logical order of motion configurations and an identification of a reference motion configuration, thereby identifying the motion configurations contained in the time measurement of the global GRF; for each time region, determining an individual GRF for each one of the two support contacts using the identification of the motion configuration for the time region, the time measurement of the global GRF, and one of an interpolation function and a parametric equation, the one of an interpolation function and a parametric equation being used to model an individual GRF of a first one of the two support contacts that takes off from the force platform, an individual GRF of a second one of the two support contacts being determined using the global GRF and the individual GRF of the first one of the two support contacts, thereby determining a contribution of each one of the at least two support contacts to the global GRF; and outputting the individual GRFs.