Acceleration-based Assistive Strategy to Control a Back-support Exoskeleton for Load Handling: Preliminary...

Area of Science:

• Robotics
• Human-Robot Interaction
• Biomechanics

Background:

• Active exoskeletons offer greater versatility than passive devices.
• A key challenge is developing control strategies for adaptive physical assistance.
• Active back-support exoskeletons are crucial for industrial applications.

Purpose of the Study:

• To present a new control strategy for active back-support exoskeletons.
• To improve physical assistance in dynamic situations using trunk angular acceleration.
• To evaluate the effectiveness of the proposed strategy in a load handling task.

Main Methods:

• Development of a novel control strategy incorporating trunk angular acceleration.
• Experimental testing of an active back-support exoskeleton prototype.
• Evaluation of assistive torque profiles and peak spinal muscular activity during load handling.

Main Results:

• The new strategy demonstrated improved assistive torque profiles, particularly during movement transitions (lifting and lowering).
• The control strategy showed appropriate adaptation to the dynamics of user movement.
• Preliminary data indicated promising trends in reduced peak spinal muscular activity.

Conclusions:

• The proposed control strategy effectively enhances assistance in dynamic scenarios for active back-support exoskeletons.
• The use of trunk angular acceleration shows potential for improving exoskeleton performance and user well-being.
• Further research and detailed evaluation are warranted based on promising preliminary findings.