Shortcomings of human-in-the-loop optimization of an ankle-foot prosthesis emulator: a case series.

ABSTRACT: Human-in-the-loop optimization allows for individualized device control based on measured human performance. This technique has been used to produce large reductions in energy expenditure during walking with exoskeletons but has not yet been applied to prosthetic devices. In this series of case studies, we applied human-in-the-loop optimization to the control of an active ankle-foot prosthesis used by participants with unilateral transtibial amputation. We optimized the parameters of five control architectures that captured aspects of successful exoskeletons and commercial prostheses, but none resulted in significantly lower metabolic rate than generic control. In one control architecture, we increased the exposure time per condition by a factor of five, but the optimized controller still

SUBMITTER: Welker CG 

PROVIDER: S-EPMC8097204 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature