Schuy, Jochen ; Beckerle, Philipp ; Wojtusch, Janis ; Rinderknecht, Stephan ; Stryk, Oskar von (2012)
Conception and Evaluation of a Novel Variable Torsion Stiffness for Biomechanical Applications.
4th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob2012). Roma, Italy (June 24-27, 2012)
Conference or Workshop Item
Abstract
Abstract—This paper proposes a novel variable torsion stiffness (VTS) aiming on biomechanical applications like prosthetic knee joints. By varying the effective length of a torsional elastic element via a relocatable counter bearing, the stiffness of a rotational joint is adjusted. This functional concept is described in detail by the authors as well as the design of such VTS joints. Additionally, analytical models for the transfer behaviour of drivetrain and stiffness control are derived. These are used for a simulative evaluation of a pendulum driven by a VTS unit. Based on the results of this simulation, the power requirements of VTS are analysed. Furthermore, an analysis of its structural strength is presented. For practical comprehensibility, the example of the design of a prosthetic knee joint is taken up for several times in this paper. Finally, the concept, modeling and design of VTS as well as the simulation results are concluded and discussed in a final assessment and in comparison to other contemporary concepts.
| Item Type: | Conference or Workshop Item |
|---|---|
| Erschienen: | 2012 |
| Creators: | Schuy, Jochen ; Beckerle, Philipp ; Wojtusch, Janis ; Rinderknecht, Stephan ; Stryk, Oskar von |
| Type of entry: | Bibliographie |
| Title: | Conception and Evaluation of a Novel Variable Torsion Stiffness for Biomechanical Applications |
| Language: | English |
| Date: | June 2012 |
| Event Title: | 4th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob2012) |
| Event Location: | Roma, Italy |
| Event Dates: | June 24-27, 2012 |
| Corresponding Links: | |
| Abstract: | Abstract—This paper proposes a novel variable torsion stiffness (VTS) aiming on biomechanical applications like prosthetic knee joints. By varying the effective length of a torsional elastic element via a relocatable counter bearing, the stiffness of a rotational joint is adjusted. This functional concept is described in detail by the authors as well as the design of such VTS joints. Additionally, analytical models for the transfer behaviour of drivetrain and stiffness control are derived. These are used for a simulative evaluation of a pendulum driven by a VTS unit. Based on the results of this simulation, the power requirements of VTS are analysed. Furthermore, an analysis of its structural strength is presented. For practical comprehensibility, the example of the design of a prosthetic knee joint is taken up for several times in this paper. Finally, the concept, modeling and design of VTS as well as the simulation results are concluded and discussed in a final assessment and in comparison to other contemporary concepts. |
| Identification Number: | 2012:IEEE-BioRob_VTS |
| Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Institute for Mechatronic Systems in Mechanical Engineering (IMS) 20 Department of Computer Science 20 Department of Computer Science > Simulation, Systems Optimization and Robotics Group Interdisziplinäre Forschungsprojekte Interdisziplinäre Forschungsprojekte > Forschungsprojekte Prothetik |
| Date Deposited: | 20 Jun 2016 23:26 |
| Last Modified: | 08 May 2019 10:15 |
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| Corresponding Links: | |
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