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Trajektorienfolgeregelung für aktive magnetische Lager und Führungen ausgewählter spanabhebender Werkzeugmaschinen

Trajektorienfolgeregelung für aktive magnetische Lager und Führungen ausgewählter spanabhebender Werkzeugmaschinen

          
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About the Book

In zwei Anwendungsfeldern werden aktive magnetische Aktuatoren in der industriellen Praxis eingesetzt, um spanabhebende Werkzeuge zu lagern bzw. zu führen. Die beschriebenen Anwendungsfälle zeigen anschaulich die Vorteile der expliziten Verwendung der Modelle zur Beschreibung der Kraftentstehung an magnetischen Aktuatoren in der Regelung. Die Verwendung der Modelle ermöglicht die Einhaltung hoher Genauigkeitsanforderungen. Lagerkräfte können relativ schnell und betragsgenau erzeugt werden, auch wenn das zu lagernde Teil sich nicht in Nominallage befindet. Bei magnetisch gelagerten Spindeln für die spanende Unrundbearbeitung von Werkstücken werden Magnetlager verwendet, um den Rotor mikrometergenau, synchron zur Rotation entlang einer vorgegebenen Bahn zu bewegen. Um dies zu erreichen, werden für die Krafterzeugung durch die Magnetlager unterschiedlich detaillierte Netzwerkmodelle hergeleitet und verifiziert. Die Herleitung einer flachheitsbasierten Trajektorienfolgeregelung wird gezeigt, und spezielle Algorithmen zur Rekonstruktion und Kompensation mehrerer harmonischer Störbeschleunigungen werden vorgestellt. Die Messergebnisse von bearbeiteten Werkstücken belegen, dass die hohen Anforderungen bzgl. der Positioniergenauigkeit auch bei anspruchsvolleren Sollpositionsverläufen und trotz auf die Spindel wirkender Bearbeitungskräfte erfüllt werden. Das Bandsägeblatt, das beim Schneiden bspw. aufgrund von Inhomogenitäten im Holz seitlich verläuft, wird mit Hilfe einer aktiven magnetischen Führung entgegen der gemessenen Verlaufsrichtung gezogen bzw. gezielt ausgelenkt. Ein mit Hilfe von Netzwerkmethoden entworfenes Modell des Stromstärke-Positions-Kraft-Zusammenhangs, das Streuflüsse und Sättigungserscheinungen berücksichtigt, dient als Grundlage für den Entwurf einer Trajektorienfolgeregelung. Der Einsatz unter realen Praxisbedingungen zeigt, dass die magnetische Führung des Sägeblatts die Schnittqualität des Holzes deutlich erhöht und gleichzeitig höhere Vorschubgesch


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Product Details
  • ISBN-13: 9783959080224
  • Publisher: Bod Third Party Titles
  • Publisher Imprint: Tudpress Verlag Der Wissenschaften Gmbh
  • Height: 276 mm
  • No of Pages: 120
  • Spine Width: 6 mm
  • Width: 203 mm
  • ISBN-10: 3959080220
  • Publisher Date: 09 Sep 2015
  • Binding: Paperback
  • Language: German
  • Returnable: N
  • Weight: 276 gr


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