Shaping the acoustic radiation of a vibrating plate

被引：24

作者：

Wrona, Stanislaw ^{[1
]}

Pawelczyk, Marek ^{[1
]}

Qiu, Xiaojun ^{[2
]}

机构：

[1] Silesian Tech Univ, Dept Measurements & Control Syst, Gliwice, Poland

[2] Univ Technol Sydney, Ctr Audio Acoust & Vibrat, Sydney, NSW, Australia

来源：

JOURNAL OF SOUND AND VIBRATION | 2020年 / 476卷

关键词：

Passive noise control; Acoustic radiation; Active noise control; Mathematical modelling; Optimization process; Masses and ribs arrangement; ACTIVE CONTROL APPLICATIONS; SIMULTANEOUS-OPTIMIZATION; FREQUENCY-RESPONSE; ADDITIONAL MASSES; NOISE-CONTROL; ARRANGEMENT;

D O I：

10.1016/j.jsv.2020.115285

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A new method is proposed for precise shaping of the acoustic radiation of a vibrating plate. The potential applications of this method are: to optimize acoustic radiation of a plate employed as a sound source; and to enhance transmission loss of a plate used as a noise barrier, both in passive or active control solutions. The proposed method is based on mounting several additional ribs and masses (passive elements) to the plate surface at locations determined by an optimization process. This optimization involves a model of the vibroacoustic system, a cost function representing the objective under consideration, and an optimization algorithm. The method is described, and results of both numerical simulation and experimental validation are presented. Analysis of results shows that the transmission loss introduced by a passive noise barrier can be enhanced by more than 7 dB in frequency bands of interest. Furthermore, these enhancements can be combined with optimized arrangements of actuators and sensors, resulting in a hybrid passive-active noise control system. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：23

共 28 条

[1] Active vibration control of flexible cantilever plates using piezoelectric materials and artificial neural networks [J].