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Halbzeit Meetup Open Adaptronik
1.
© Fraunhofer© Fraunhofer FROM
ROCKET SCIENCE TO THE MAKERSPACE Open Adaptronik – Open Source Werkzeugkasten für die adaptronische Erhöhung der Präzision in photonischen Systemen
2.
© Fraunhofer Photonik Nutzbarmachung von
Licht mit höchster Präzision
3.
© Fraunhofer Schwingungsprobleme -
so alt wie die Photonik ... even a slight wind is apt to set up a vibration in the telescope, […] would make even the slightest tremors readily visible and would spoil the use of the instrument for accurate work. Mitchell, S. A. (1910). The Great Open-Air Telescope. Popular Astronomy, 18, 296-299.
4.
© Fraunhofer Herausforderung Weltraumanwendung Belvin,
W. Keith; Edighoffer, Harold H. (1986): The 15 meter hoop-column antenna dynamics: Test and analysis. In: NASA(DOD Control)Structures Interaction Technology, S. 167–185.
5.
© Fraunhofer Herausforderung Weltraumanwendung
Seit den 1980er Jahren Planungen für immer größere Strukturen - Teleskope, Antennen,… Schwingungsprobleme durch ultraleichte Bauweise Traditionelle Möglichkeiten der Schwingungsminderung sind im Weltraum nicht möglich ( z.B. Schwingfundamente aus Beton…) WIE,BONG;HORTA,LUCAS;SULLA,JEFF(1991): ClassicalcontrolsystemdesignandexperimentfortheMini-Masttruss structure.In:JournalofGuidance,Control,andDynamics14(4),S.778–784.
6.
© Fraunhofer Adaptronik –
Schwingungen mindern mit aktiven Systemen Verringerung der Schwingung, indem 1. ein Sensor die Schwingung misst 2. ein Regler ein Signal für eine kompensierende Schwingung berechnet, welches 3. durch einen Schwingungsaktor der Störung entgegenwirkt
7.
© Fraunhofer Anwendungen für
die Adaptronik in der Photonik SOFIA - Im Flugzeug montiertes Teleskop Aktive Schwingungsisolation für optische Tische (Thorlabs) • hoch spezialisierte Systeme • Leistungsfähige Komponenten Hohe Entwicklungskosten Teure Komponenten
8.
© Fraunhofer Schwingungen in
der Hobbyastrononomie „…geht es mir auch ums Schwingungsverhalten. Ich hab mal ein 10 kg Gewicht an einem Seil unter die Montierung gehängt. Ich habe den Eindruck, es schwingt nicht ganz so wie vorher.“ (www.astronomie.de) „…könnte ich mir vorstellen, bringt unheimlich Schwingung ins System.“ „…Kurz: eine pauschale Aussage kann ich dir nicht geben.“ (aus dem Forum von astronomie.de)
9.
© Fraunhofer Open Adaptronik Transfer
der Hochtechnologie zum Maker Ziel: Erarbeitung eines Werkzeugkastens für den Bastler: Schwingungsphänomene selbst messen und analysieren Lösungen für Schwingungsprobleme durch Ausprobieren kennenlernen und testen Schwingungsminderung selbst bauen
10.
© Fraunhofer Open Adaptronik Transfer
der Hochtechnologie zum Maker Open Source Entwicklungswerkzeuge Leicht verfügbare Basiskomponenten Nutzung leicht zugänglicher Fertigungsverfahren Open Source Dokumentation
11.
© Fraunhofer Vorteil aktiver
Systeme am Beispiel Schwingungsisolation Direkte Ankopplung - Komplette Schwingungsübertragung Weiche Lagerung + Abkopplung von Frequenzen oberhalb der Resonanz - Verstärkung resonanter Schwingungen - Große schwingende Masse erforderlich - Hoher Aufwand für eine weiche, aber tragfähige Lagerung Aktive Lagerung + Abkopplung von Frequenzen oberhalb der Resonanz + Aktive Dämpfung der Resonanz + Entkopplung der statischen Lagerung und der dynamischen aktiven Isolation: mit passiven Elementen nicht umsetzbar - Komplexeres System
12.
© Fraunhofer 1 2
3 4 5 6 0 0.5 1 1.5 2 |H| Elastisch, ohne Dämpfung starr Elastisch, mit Dämpfung aktiv
13.
© Fraunhofer Dirk
Mayer Fraunhofer LBF dirk.mayer@lbf.fraunhofer.de +49 6151 705 567 Heiko Atzrodt Fraunhofer LBF heiko.atzrodt@lbf.fraunhofer.de +49 6151 705 349 Christoph Tauchert TU Darmstadt tauchert@is.tu-darmstadt.de +49 6151 1624339 Dank an: Kontakt:
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