A design methodology for structural and control systems of a prosthetic leg
- Authors
- Jung, Ui-Jin; Park, Gyung-Jin
- Issue Date
- Aug-2018
- Publisher
- SPRINGER
- Keywords
- Nonlinear dynamic response optimization; Co-design; Prosthetic leg; Optimal control; Structural optimization; Equivalent static loads method
- Citation
- STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, v.58, no.2, pp.379 - 397
- Indexed
- SCIE
SCOPUS
- Journal Title
- STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
- Volume
- 58
- Number
- 2
- Start Page
- 379
- End Page
- 397
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/5717
- DOI
- 10.1007/s00158-018-2017-0
- ISSN
- 1615-147X
- Abstract
- A design methodology is proposed to optimize a prosthetic leg considering the structural and control aspects. Previous studies mainly focused on each of a structural design problem or a control problem. The structural design variables of a prosthetic leg are determined in a structural design problem while the trajectory tracking based on the human gait cycle is found to be a control problem. The two problems have been separately solved. However, they should be simultaneously considered to obtain a better design. Then the problem would be nonlinear dynamic response optimization of structural and control systems. An optimization method was recently developed for a linear system of structural and control design problems using the equivalent static loads (ESLs). In this study, a design methodology for the prosthetic leg is presented by expanding the equivalent static loads method (ESLM) to nonlinear dynamic systems. A simple example is solved to validate the proposed methodology, and then a prosthetic leg is optimized to reduce the weight and energy consumption.
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