人体步态差异性的参数化辨识方法及应用

The mathematical model of gait curves with the same control points for three lower limb joints was proposed, and the shape parameters were used to distinguish different curves. The gait data of a normal group (10 healthy young men) and a validation group (2 healthy and 3 young men with right ankle injuries) were measured and calculated at normal walking speed with the Perception Neuron motion capture system. Therefore, the vertical displacement trajectories of lower limb joints (hip, knee and ankle) and their shape parameters are obtained. The analysis of whether the shape parameters of the validation group belong to the adjustment range of shape parameters of the normal group shows that most of the shape parameters of the injured are beyond the adjustment range, indicating that the parametric judgment is valid and concluding that this method has reference values for identifying abnormal gaits and evaluating rehabilitation effects.