Fabric Pneumatic Artificial Muscle-Based Head-Neck Exosuit: Design, Modeling, and Evaluation

A research team led by Katalin Schäffer has published a paper detailing a novel 'Fabric Pneumatic Artificial Muscle-Based Head-Neck Exosuit.' Accepted for the IEEE International Conference on Robotics and Automation 2026, the work presents a soft robotic alternative to traditional, bulky rigid-link exoskeletons. The design uses fabric-based pneumatic artificial muscles—air-powered actuators that contract like biological muscles—to provide assistive force. A key achievement is the team's physics-based model, which calculates the precise actuator pressures needed to counteract the gravitational load of the head, a major challenge in neck support.

The prototype demonstrated significant functional potential. The modeled range of motion showed the suit could cover 83% of a target workspace for head movement, though gravity compensation currently limits that to 43%. The researchers introduced 'compression force along the neck' as a new metric for assessing user comfort. By modeling different configurations, they optimized the design for high torque in axial rotation and stability during lateral movement. Successful tests with both a dummy and a human user proved the exosuit can provide tangible head support and track movement trajectories, validating the soft actuation approach for medical and assistive applications.