控制理论与应用2024，Vol.41Issue(7)：1286-1295,10.DOI:10.7641/CTA.2024.30536
利用麦克风阵列的管道主动噪声控制方法
Duct active noise control method using microphone array
摘要
Abstract
During the operation of air conditioning ventilation ducts,the low-frequency noise generated internally is difficult to be eliminated through passive noise reduction methods such as wrapping silencing materials.When deploying active noise control,acoustic feedback may occur,affecting noise reduction performance and even causing control system divergence.In response to this acoustic feedback phenomenon,based on the analysis of the causes,this paper takes the microphone array as the feedforward,adds the linear constrained minimum variance beamforming algorithm of Duvall Frost structure with pre-tuning,and proposes an active noise control method using the Microphone array in the duct,which can pick up the noise signal from the upstream of the duct in a single direction to avoid the impact of acoustic feedback.The filter x minimum mean square error(FxLMS)algorithm is used as the adaptive control algorithm,and active noise control experiments are carried out in the duct environment for four typical low-frequency noises.The results show that compared to the situation without using a microphone array,the design in this paper can achieve good noise reduction performance and achieve good results in terms of stability.关键词
主动噪声控制/声反馈/管道系统/FxLMS/麦克风阵列Key words
active noise control/acoustic feedback/duct system/FxLMS/microphone array引用本文复制引用
刘全利,刘宏博,钱加浩,张立勇,王伟,高广恩..利用麦克风阵列的管道主动噪声控制方法[J].控制理论与应用,2024,41(7):1286-1295,10.基金项目
大连市重点领域创新团队支持计划项目(2021RT02)资助.Supported by the Key Field Innovation Team Support Plan of Dalian,China(2021RT02). （2021RT02）
