舱室噪声主动控制系统布放优化与试验研究

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关键词：舱室噪声；有源噪声控制；多目标优化；第二代非支配排序遗传算法；电声器件；仿真及试验 中图分类号：TB535 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202310032

Abstract：Helicoptercabinnoisenegativelyimpactscabinenvironmentalcomfortandsafety.Inthispaper，non-dominated sorting geneticalgorithmIisusedtosolvetheelectroacousticdeviceplacementproblemoftheactivecontrolsystemappliedinthecabin. Anappropriatespatialdiscretizationofthesoundfeldoftheonfinedspaceispreformed，ndthentheelectroacousticdevices placementoptimization problem，quantityoptimization problem，and secondary source sound intensityoptimization problemare furthertransformedintoacombinatorialoptimizationproblem.Takingtheminimunvalueofthesumofthesquaresoftheacoustic presuresatthemeasurementpointsasthecontrolobjective，themultiobjectiveoptimizationalgorithmcombinedwiththeactive controlalgorithmisadoptedtosolvetheoptimalplacementofelectroacousticdevicesinthesystem.Consideringthenoiseontrol system’scomplexityandfeasibiltandlimited spaceinsidethecabin，thecontrolsystem’ssecondarysoundsourcesandeorsensors are selected as a 4 -channel configuration.The optimization program is repeated several times independently，and the most frequentlyoccuringpositiosofeletroacousticdeviesareountedasedonwhichomputersimulatiandexperimentaeoduct ed，andtheresultsshowthattheoptimizationresultscanmakethenoisereductionattheheightoftheheadofthecabinpersonel in the sitting position reach up to 24.9dB ，and the global noise reduction reaches 19.4 dB.

Keywords：cabinnoise；activenoisecontrol;multiobjectiveoptimization；non-dominatedsortinggeneticalgorithmI；electro acoustic devices;simulationand experiment

在直升机等现代航空飞行器的设计与制造中，成本效益和节能降耗是需要考虑的主要目标，同时结构轻量化和体积小型化也是发展的方向。（剩余11745字）