Evaluation of the Active Plate Vibration Reduction by the Parameter of the Acoustic Field |
| A. Brańskia and S. Szela b
aLaboratory of Acoustic, WEiI, Technical University of Rzeszów, W. Pola 2, 35-959 Rzeszów, Poland bInstitute of Technology, University of Rzeszów, al. T. Rejtana 16c, 35-959 Rzeszów, Poland |
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| Effectiveness of the active vibration reduction of triangular plate is evaluated by way of the analysis of acoustical field. The active vibration reduction is performed with actuators. The effect is measured by the analysis of the acoustical field both far distance and near one from the plate. As the control parameter, the difference between acoustical pressures is considered. The first pressure and the second one are radiated by the plate without and with the vibration reduction, respectively. The control parameter is calculated for two reduction cases. First case, when actuators are attached at so-called quasi-optimal places and second one, when they are shifted. The numerical calculations show that the acoustical field is sensitive to change of the plate active vibration reduction. It responds to even little changes of the plate vibrations in both active reduction cases mentioned above. So that it is handy indirect control parameter of the active vibration reduction. |
| DOI: 10.12693/APhysPolA.119.942 PACS numbers: 43.20.Tb, 43.60.Vx, 43.40.-r, 43.40.+s |