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Proceedings Paper

Active component and control design for torsional mode vibration reduction for a parallel kinematic machine tool structure
Author(s): Reimund Neugebauer; Volker Wittstock; André Bucht; André Illgen
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Paper Abstract

The paper reports the holistic development of an active piezo-based component concerning the mechanical design and the control. The active component is used for the reduction of torsional vibrations in a strut of a tripod parallel kinematic machine. By means of this new component the main drawback of the x, y, z-tripod structure can be eliminated. A calculation shows the compliance of the connection between actuators and the adjacent mechanical parts as the most sensitive point of the design. The characteristic values of the piezo actuator were transformed into the active component with the help of design factors. For reducing the structural vibrations a control laws is presented that changes the properties of the electro-mechanical structure, like damping or stiffness. This is possible by a feedback of motion signals, e.g. velocity. The described electro-mechanical model was used for the control design. Experiment results, which are finally presented, show a reduction of structural vibrations.

Paper Details

Date Published: 19 March 2008
PDF: 12 pages
Proc. SPIE 6930, Industrial and Commercial Applications of Smart Structures Technologies 2008, 69300F (19 March 2008); doi: 10.1117/12.776015
Show Author Affiliations
Reimund Neugebauer, Fraunhofer-Institute for Machine Tools and Forming Technology (Germany)
Volker Wittstock, Fraunhofer-Institute for Machine Tools and Forming Technology (Germany)
André Bucht, Fraunhofer-Institute for Machine Tools and Forming Technology (Germany)
André Illgen, Fraunhofer-Institute for Machine Tools and Forming Technology (Germany)


Published in SPIE Proceedings Vol. 6930:
Industrial and Commercial Applications of Smart Structures Technologies 2008
L. Porter Davis; Benjamin Kyle Henderson; M. Brett McMickell, Editor(s)

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