Print Email Facebook Twitter The Design and Proof-of-Concept of the BERT Prosthesis Title The Design and Proof-of-Concept of the BERT Prosthesis Author Landers, John (TU Delft Mechanical, Maritime and Materials Engineering; TU Delft Biomechanical Engineering; TU Delft Biorobotics) Contributor Vallery, H. (mentor) Smit, G. (mentor) Degree granting institution Delft University of Technology Date 2020-11-24 Abstract OBJECTIVE: This paper describes the design of the BERT Prosthesis and evaluates the proof-of-concept testing for its primary functions. DESIGN: The BERT Prosthesis is an energetically passive, lightweight, transfemoral prosthesis, and four hypotheses about its functional abilities were proposed. TESTING: A simulation of the leg dynamics was developed and a 20 parameter optimization was conducted to determine the leg geometry that produces the most optimal joint moment profiles for the first hypothesized function. A prototype of the device was manufactured and proof-of-concept tests for the remaining functional hypotheses were carried out on a testbed. Nine different prototype configurations across three force conditions were tested to evaluate the effective impact of the device. CONCLUSIONS: Over 4 million geometries were evaluated in the optimization and it was found that the BERT Prosthesis was capable of matching the desired moment profiles with 4.9% RMSE at the knee and 31.2% RMSE at the ankle. Two of the three remaining functional hypotheses were proved to be true and the third was found to be false. Subject TransfemoralProsthesisPassive To reference this document use: http://resolver.tudelft.nl/uuid:6b02b099-779a-4492-8de8-f282e9eaa0dc Embargo date 2021-07-26 Part of collection Student theses Document type master thesis Rights © 2020 John Landers Files PDF Landers_Masters_Thesis_Re ... _Final.pdf 10.35 MB Close viewer /islandora/object/uuid:6b02b099-779a-4492-8de8-f282e9eaa0dc/datastream/OBJ/view