Variable Pivot Gait Based a Novel Dynamics Correction Method for Human Lower Limbs Model

Area of Science:

• Biomechanics
• Robotics
• Human Motion Analysis

Background:

• Gait analysis is crucial for understanding lower limb biomechanics.
• Existing gait models often omit crucial phases where both feet are not fully grounded.

Purpose of the Study:

• To propose a novel variable pivot gait model.
• To develop a dynamics correction method for incomplete foot-ground contact phases.
• To enhance the accuracy of lower limb dynamics modeling.

Main Methods:

• Motion capture experiments to record foot-ground relative motion.
• Development of a variable pivot gait model based on pivot transformations.
• Dynamics modeling of human lower limbs using the proposed gait stages.
• Implementation of a dynamics correction method for non-fully-grounded foot phases.

Main Results:

• The variable pivot gait accurately reflects actual foot-ground motion.
• Simulations and experiments validate the proposed gait model.
• The dynamics correction method effectively improves the accuracy of calculated hip, knee, and ankle moments.

Conclusions:

• The variable pivot gait and dynamics correction method offer a more comprehensive approach to lower limb biomechanics.
• This approach enhances the accuracy of dynamics modeling in human lower limbs and lower-limb robots.
• Provides a new framework for analyzing gait dynamics, particularly during transitional stance phases.