Related Experiment Video
Updated: Jun 26, 2026
09:46
Training Persons with Spinal Cord Injury to Ambulate Using a Powered Exoskeleton
Published on: June 16, 2016
Adaptive Biarticular Exosuit Assistance for Faster and More Efficient Walking
Summary
This study introduces an adaptive biarticular thigh exosuit (BATEX) that improves walking speed and efficiency. The device uses a user-tuned controller to personalize assistance, reducing metabolic cost and muscle activation in healthy adults.
Area of Science:
- Biomechanics
- Robotics
- Human-Computer Interaction
Background:
- Exosuits aim to enhance human locomotion.
- Existing controllers often require complex tuning.
- Bioinspired designs offer potential for intuitive assistance.
Purpose of the Study:
- To present and evaluate an adaptive biarticular thigh exosuit (BATEX).
- To assess the effect of BATEX on walking efficiency, speed, and metabolic cost.
- To investigate user-tuned control for personalized exosuit assistance.
Main Methods:
- Developed an adaptive biarticular thigh exosuit (BATEX) with Force-Modulated Compliance (FMC).
- Implemented a self-tuned, ground reaction force (GRF)-driven controller.
- Conducted experiments with twelve healthy adults comparing no-exosuit (NE), zero-torque (ZT), and assisted (EXO) conditions.
Main Results:
- BATEX increased preferred walking speed (PWS) by 14.3% and preferred transition speed (PTS) by 9.0% compared to NE.
- Net metabolic cost was reduced by 9.5% (vs. NE) and 17.9% (vs. ZT) at PWS.
- Significant reductions in lower-limb muscle activation (biceps femoris, gluteus maximus, gastrocnemius) were observed.
Conclusions:
- GRF-driven, user-tuned biarticular assistance effectively improves walking economy and gait speed.
- The BATEX framework demonstrates potential for enhancing mobility in diverse populations.
- Personalized assistance through user-tuned control is a viable strategy for exosuit development.
