Presentation
69. Individual Differences in Stride Length During Powdered Exoskeleton Walking Due to Changes in Quasi-Stiffness Control Parameter
SessionPoster Session 1
DescriptionActive exoskeletons are driven by controllers that execute commands that respond to a user’s intent. It is unclear how precise these systems need to be to assist humans efficiently and reduce the risk of injury. This study evaluated participants’ stride length during powered ankle exoskeleton walking while controlling the quasi-stiffness coefficient, the relationship between exoskeleton ankle torque and ankle angle. Compared with the reference quasi-stiffness value, 31% of participants showed a statistically significant increase in normalized stride length (NSL) at high and low quasi stiffness coefficients. In comparison, 50% showed a statistically significant decrease in NSL. Only 19% showed a statistically significant increase at either low or high quasi-stiffness coefficients. The results suggest that it is essential to consider individual responses, as different stride lengths emerged from changes in quasi stiffness across participants. This knowledge is important for improving user experience and performance and ensuring the system is used efficiently.
Event Type
Poster
TimeWednesday, September 11th5:30pm - 6:30pm MST
LocationMcArthur Ballroom
Aerospace Systems
Cognitive Engineering & Decision Making
Computer Systems
Forensics Professional
Health Care
Human Performance Modeling
Individual Differences in Performance
Perception and Performance
Product Design
Safety
Training
Usability and System Evaluation
Extended Reality