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Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. New approach to vibration control using piezoceramic elements
Ein neuer Ansatz zur Schwingungsregelung mit piezokeramischen Elementen
 Drews, P. ; European Center for Mechatronics; IEEE Industrial Electronics Society: Mechatronics and Robotics '04. Vol.2 : Aachen  Germany, September 13  15, 2004 Aachen: Eysoldt, 2004 ISBN: 393815330X ISBN: 393815350X S.4650 
 International Conference on Mechatronics and Robotics (MECHROB) <2004, Aachen> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer IKTS () 
 EulerBernoulliBalken; Federsteifigkeit 
Abstract
Many mechanical structures of mechatronic systems suffer from unwanted vibrations. The present paper concerns vibration control of a Euler Bernoulli beam using piezoceramic actuators. The intention is to eliminate the steady state motion at a prescribed location in a continuous system like a beam under the influence of an external harmonic excitation. The method is known as nodal control. A new system setup is introduced. The actuator is integrated in the structure's clamping. For this system a model based on continuum mechanics is derived. It is capable of characterizing the structure's dynamics, the coupling of piezoceramic actuators and gives a mathematical solution in a closed form for the needed parameters to shift the vibration node as desired. The solution considers various types of commercially available piezoceramic actuators. Furthermore an experiment is designed to validate the mathe matical model. The experiments are performed with a variety of metal beams with applied piezoceramic patch actuators. It is confirmed that the theory developed here produces accurate results. The model can serve as a vital tool for enhanced investigations on shape and vibration control of beam structures.