一体化传感-作动器设计及其在板腔结构主动减振降噪中的试验研究

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中图分类号：TH113.1 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202310054

Integrated sensor-actuator design and experimental study in active vibration and noise reduction for cavity structure

CHENMinghao，MAOQibo，WUJinwu，PENGLihua，LIQI （School of Aircraft Engineering，Nanchang HangKong University，Nanchang 33oo63，China）

Abstract：Thecontrolofvibrationandacousticradiationinrectangularconfinedspaceshasbeenanimportantchalengeinegeer ing.Inthis study，asolutionisproposed withasensoractuatorcontrolsystemconsistingofaloudspeaker，abaseandapiezoelec tricceramic sensor.This design hasthe advantagesoflightweight，low natural frequencyand integrated sensing/actuatordesign. However，thestrain-integracontrolschemeusedfortheintegratedsensoractuatorsuffersfromstabilityproblems.Toovercome these problems，thispaperutilizesacontroltrategywithaband-passfiter.Thestudytests themechanicalpropertiesofthis home madeinertialactuatornddeterminesthestructuralmodesthathavethereatestimpactontheacousticperformance.Abandpass filtercontrolstrategyisused to selectivelymodulatethesestructuralmodes.Theexperimentalresultsshowthatthehomemadeiner tialactuatorcanefectivelygenerateiertialforces，whilethebandpassfiltercaneffectivelyreducethestructuralvibrationespe ciallincontrolingthefirsttwoacousticavitymodesintelowfrequencybnd，hicheibitsasignificaneffect.isoach is moreflexibleincontrollnglow-frequencynoiseinconfinedspacesand providesaneficientsoutiontotheproblemofstructural noise in engineering environments.

Keywords： noise reduction;structural vibration control; band-pass filter strategy;selective control

在工程实践中，封闭声场在多个领域中具有关键作用，它们广泛用于提高日常交通的舒适性，例如船舶舱室、音乐厅和直升机机舱。（剩余12448字）