Kratz, R. ; Stelzer, Maximilian ; Friedmann, Martin ; Stryk, Oskar von (2007)
Control approach for a novel high power-to-weight ratio SMA muscle scalable in force and length.
Zürich, CH
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
The development of a control approach for a novel, soundless, lightweight and multifunctional shape memory alloy (SMA) actuator scalable in force and length for personal assistance or home-help robots is presented in this paper. The SMA actuator is based on lightweight bundles of thin wires of prestrained shape memory alloy that change their length when heated above their transformation temperature. The design approach of the actuator allows arranging the point of actuation in any direction and ensures a short cool down time to guarantee a frequency of contraction/stress cycles that is high enough to allow fast joint motions. This is needed for the generation of fast joint motions. For the use of the actuator the novel control approach has been experimentally validated. The approach uses the resistance of the actuator as a linear position encoder and there are no additional external sensors needed. The application of the new actuator to a novel lightweight humanoid robot is outlined. One advantage of the actuator over electric motors lies in the large variety of user-defined points of actuation of the in pull-force and length free scalable actuators and the high power-to-weight ratio. The results demonstrate that it is possible to build a large humanoid robot actuated with SMA actuator in a new way.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2007 |
| Autor(en): | Kratz, R. ; Stelzer, Maximilian ; Friedmann, Martin ; Stryk, Oskar von |
| Art des Eintrags: | Bibliographie |
| Titel: | Control approach for a novel high power-to-weight ratio SMA muscle scalable in force and length |
| Sprache: | Englisch |
| Publikationsjahr: | 18 September 2007 |
| Buchtitel: | 2007 IEEE/ASME International Conference on Advanced Intelligent Mechatronics : Zurich, Switzerland, 4 - 7 September 2007.-Piscataway, NJ : IEEE Service Center, 2007.-ISBN 1-424-41263-3, 978-1-424-41263-1 |
| Veranstaltungsort: | Zürich, CH |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | The development of a control approach for a novel, soundless, lightweight and multifunctional shape memory alloy (SMA) actuator scalable in force and length for personal assistance or home-help robots is presented in this paper. The SMA actuator is based on lightweight bundles of thin wires of prestrained shape memory alloy that change their length when heated above their transformation temperature. The design approach of the actuator allows arranging the point of actuation in any direction and ensures a short cool down time to guarantee a frequency of contraction/stress cycles that is high enough to allow fast joint motions. This is needed for the generation of fast joint motions. For the use of the actuator the novel control approach has been experimentally validated. The approach uses the resistance of the actuator as a linear position encoder and there are no additional external sensors needed. The application of the new actuator to a novel lightweight humanoid robot is outlined. One advantage of the actuator over electric motors lies in the large variety of user-defined points of actuation of the in pull-force and length free scalable actuators and the high power-to-weight ratio. The results demonstrate that it is possible to build a large humanoid robot actuated with SMA actuator in a new way. |
| Fachbereich(e)/-gebiet(e): | 20 Fachbereich Informatik 20 Fachbereich Informatik > Simulation, Systemoptimierung und Robotik Zentrale Einrichtungen |
| Hinterlegungsdatum: | 18 Mär 2009 14:17 |
| Letzte Änderung: | 06 Mai 2019 10:51 |
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