Experimental verification of a control algorythm based on measurement of bending moment by the strain measurement method used for active reduction of transversal vibrations of beams by piezoelectric elements ... więcej

Experimental verification of a control algorythm based on measurement of bending moment by the strain measurement method used for active reduction of transversal vibrations of beams by piezoelectric elements / Lukasz Scislo, Marek S. Kozien // W: 25th International Congress on Sound and Vibration 2018 (ICSV 25), Hiroshima, Japan 8-12 July 2018. Vol. 2 [Dokument elektroniczny]. – Auburn : International Institute of Acoustics & Vibration, 2018. – S. 882-889 : fot., rys., tab., wykr. – Tryb dostępu: http://www.proceedings.com/40638.html. – Bibliogr. 16 poz., Streszcz. ang. – ISBN 978-151086845-8

The new generation of intelligent material technology, including systems with network of sensing and actuating elements, control and data analysing capabilities has incising impact on future design and ... więcej

The new generation of intelligent material technology, including systems with network of sensing and actuating elements, control and data analysing capabilities has incising impact on future design and manufacturing processes. One of the most promising aspects is capably of installation smart elements as actuators in vibration control systems of typical construction elements (beams, plates). The general idea of active method for beams vibrations reduction is to put the energy to the system, which generate the suitable anti-generalized force. If the vibrations of beam is assumed, the distributed moments should be put in the regions with the maximum curvatures due to the vibrations. When vibrations are the type of single-mode one, the positions of the placement of the moments are easy to determinate (using analytical or experimental methods). For multimodal response of the beam distribution and number of anti-moments must be considered and can be optimized assuming different criterion's. One of practical methods for generation of anti-moments for beams is using the piezoelectric elements. If the pair of piezoelectric actuators are considered, their action can be modelled by a set of two moments. Amplitudes of the moments are connected to the values of input voltage and piezoelectric material properties. The control problem involves the minimization of the dynamic response of the beam by using the voltage applied to the piezoelectric elements. The novelty of the approach is the use of bending momentum as a control variable that can be easily implemented in algorithm proposed in author's previous work. The authors will presents the laboratory experiment measurements results providing the proof of effectiveness of proposed solution for the examined control problem. Furthermore, the presented algorithm is effective for multimodal control of the vibration for the system of single or multi-piezoelectric element placement on the surface of vibration structure.