
Andrew C. Vamos
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Automatic control of prosthetic socket size for people with transtibial amputation: Implementation and Evaluation
Ethan J. Weathersby, Joseph L. Garbini, Brian G. Larsen, Jake B. McLean, Andrew C. Vamos, Joan E. Sanders
People wearing a lower leg prosthesis often experience discomfort or pain during the day because of changes in socket fit. To solve this problem, we created a motor-actuated prosthetic socket that automatically maintains socket fit by continuous adjustment of the socket size. A proportional-integral (PI) control system is implemented to adjust socket size based on data collected from an inductive sensor embedded within the socket wall. The sensed distance is representative of limb-to-socket distance. Experiments on participants with transtibial limb amputation verify that the system properly maintains and responds to a change in set point to maintain socket fit...
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Posted on 30 DEC 2020