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Related Experiment Video

Updated: Sep 2, 2025

Lower Limb Biomechanical Analysis of Healthy Participants

Lower Limb Biomechanical Analysis of Healthy Participants

Published on: April 15, 2020

Design, development and model analysis of lower extremity Exo-skeleton.

R Prashanna Rangan¹, C Maheswari², S Vaisali²

¹Department of Mechanical Engineering, Sri Venkateswara College of Engineering, Sriperambudur 602117, India.

Medical Engineering & Physics

|August 4, 2022

Summary

This summary is machine-generated.

This study analyzes a 2-degree-of-freedom lower limb exoskeleton for rehabilitation. Torque calculations and trajectory planning ensure safe and effective wearable walking aid functionality.

Keywords:

Denavit-Hartenberg Exo-skeleton Locomotion assistant Lower limb analysis Torque analysis Trajectory planning

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Area of Science:

Robotics
Biomechanics
Rehabilitation Engineering

Background:

Exoskeleton technology has advanced significantly, with increasing applications in medical therapy and rehabilitation.
Precise control and dynamic analysis are crucial for safe and effective exoskeleton functioning, especially for patient use.
Understanding joint dynamics under various loads is essential for designing effective lower limb assistive devices.

Purpose of the Study:

To perform dynamic analysis and torque calculation for a 2-degree-of-freedom lower limb exoskeleton.
To determine actuator requirements for a wearable walking aid designed for patient rehabilitation.
To develop trajectory planning for natural walking motion within safe angular limits.

Main Methods:

Dynamic modeling of a 2-DOF lower limb exoskeleton system.
Torque analysis to determine actuator selection criteria.
Trajectory planning for a complete walking cycle with joint angle constraints.

Main Results:

Calculated peak torque requirements: 52.055 Nm at the hip joint and 11.677 Nm at the knee joint.
Developed a functional trajectory plan for the exoskeleton's walking motion.
Established a basis for selecting appropriate actuators for rehabilitation purposes.

Conclusions:

The dynamic analysis and torque calculations provide essential data for actuator selection in lower limb exoskeletons.
Trajectory planning ensures safe and effective rehabilitation by mimicking natural walking within defined limits.
This research contributes to the development of advanced wearable walking aids for patient recovery.