On the theory of multibody mechanisms for elastic bodies with integrated piezoelectric actors and sensors
Rose, M. and Sachau, D. (2001) On the theory of multibody mechanisms for elastic bodies with integrated piezoelectric actors and sensors. In: Modeling, Signal Processing, and Control in Smart Structures, 4326, pp. 591-602. Spie. "International Symposium on Smart Structures and Materials", Newport Beach, USA, März 2001. ISBN 0-8194-4012-4.
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Efficiency in high speed mechanism can be further increased by use of lightweight construction. But quite often these structures have the drawback of being susceptible to vibrations. This can be overcome by applying the technology of smart structures. Here distributed actuators and sensors made from piezoceramic (PZT) material are capable to actively reduce the unwelcome vibrations if implemented within a control loop. For the optimal design of such kind of mechanism up-to-date simulation tools have to be developed further. To simulate the dynamic behavior of lightweight structures undergoing large motions the multibody approach is a suitable tool. The necessary parameters in the equations of motion for the flexible body can be calculated from the output of a finite element code. The large number of variables from the finite element model have to be reduced to only a few generalized coordinates. Therefore a modal reduction is applied in combination with the introduction of a moving frame of reference. Beyond this technique so called active modes are introduced to represent the impact of the active strain by the PZT patches. These active modes combined with natural modes represent the body deformation within the multibody model.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||On the theory of multibody mechanisms for elastic bodies with integrated piezoelectric actors and sensors|
|Journal or Publication Title:||Modeling, Signal Processing, and Control in Smart Structures|
|Page Range:||pp. 591-602|
|Series Name:||Smart Structures and Materials 2001|
|Keywords:||piezoceramics, multibody, smart structures, vibration control|
|Event Title:||"International Symposium on Smart Structures and Materials", Newport Beach, USA, März 2001|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||no assignment|
|HGF - Program Themes:||no assignment|
|DLR - Research area:||Transport|
|DLR - Program:||no assignment|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Institute of Composite Structures and Adaptive Systems > Institut für Strukturmechanik|
|Deposited By:||Sibylle Wolff|
|Deposited On:||16 Sep 2005|
|Last Modified:||14 Jan 2010 16:15|
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