Variable Damping Force Tunnel for Gait Training Using ALEX III.

Haptic feedback not only affects the quality of training but can also influence the physical design of robotic gait trainers by determining how much force needs to be applied to the user and the nature of the force. This letter presents the design of a variable damping force tunnel and explores the effect of the shape and strength of the damping field using ALEX III, a treadmill-based exoskeleton ...