Assessing the Physical Impact of Supernumerary Limbs on a Human Subject: A Simulation Study

Area of Science:

• Robotics
• Human-Robot Interaction
• Biomechanics

Background:

• Wearable robotic systems, such as Supernumerary Robotic Limbs (SRLs), interact with users and can alter human body dynamics.
• Previous research focused on closed-chain SRL configurations for human balancing assistance.
• The dynamic effects of open-chain SRL configurations remain under-explored.

Purpose of the Study:

• To develop a simulation for analyzing the dynamic effects of open-chain configured SRLs on human subjects.
• To investigate the applied torque between human and robot models in open-chain configurations.

Main Methods:

• Development of a simulation model integrating human and robot dynamics.
• Analysis of applied torque under various conditions: robot configurations, motion types, and gravity.
• Exploration of potential applications for open-chain SRLs.

Main Results:

• The simulation successfully analyzed the dynamic effects of open-chain SRLs.
• Quantified the applied torque variations based on different robot configurations, motion types, and gravity.
• Demonstrated the influence of these factors on human-robot interaction dynamics.

Conclusions:

• Open-chain SRL configurations present a new avenue for human-robot interaction research.
• Understanding applied torque dynamics is crucial for designing effective SRL systems.
• Simulation provides a valuable tool for exploring SRL applications and optimizing their performance.