通過分流揚聲器實現(xiàn)管道噪聲控制
發(fā)布時間:2018-11-19 08:49
【摘要】:提出通過分流揚聲器控制管道噪聲。首先采用一個干擾揚聲器放置在管道的一端作為噪聲源,另一個揚聲器外接分流電路組成分流揚聲器對管道噪聲進行控制,并建立管道-揚聲器耦合模型。然后設(shè)計參數(shù)獨立可調(diào)的分流電路,實現(xiàn)對分流揚聲器的固有頻率和阻尼比的獨立調(diào)節(jié),通過優(yōu)化分流電路的參數(shù),從而使得分流揚聲器達到良好的控制效果。最后對所設(shè)計的分流揚聲器的控制效果進行了數(shù)值計算。結(jié)果表明:所設(shè)計的分流揚聲器能夠有效控制管道內(nèi)的聲壓。與傳統(tǒng)的噪聲主動控制方法相比,該方法的主要優(yōu)點在于控制系統(tǒng)不需要誤差傳感器和控制器,結(jié)構(gòu)簡單,實際使用方便。
[Abstract]:It is proposed to control the pipe noise by diverging loudspeakers. First, a noise source is placed on one end of the pipe by an interference loudspeaker, and the noise is controlled by a shunt circuit of the other loudspeaker, and the coupling model of the pipe and loudspeaker is established. Then an independent and adjustable shunt circuit is designed to realize the independent regulation of the natural frequency and damping ratio of the shunt loudspeaker. By optimizing the parameters of the shunt circuit, the shunt loudspeaker can achieve a good control effect. Finally, the control effect of the designed shunt loudspeaker is numerically calculated. The results show that the designed shunt loudspeaker can effectively control the sound pressure in the pipe. Compared with the traditional active noise control method, the main advantage of this method is that the control system does not need error sensor and controller, the structure is simple and the practical use is convenient.
【作者單位】: 南昌航空大學飛行器工程學院;
【基金】:國家自然基金項目11464031,51265037 航空科學基金項目2015ZA56002 江西省高?萍悸涞赜媱澷Y助項目KJLD12075 江西省研究生創(chuàng)新專項資金項目YC2016-S336
【分類號】:TB535
本文編號:2341769
[Abstract]:It is proposed to control the pipe noise by diverging loudspeakers. First, a noise source is placed on one end of the pipe by an interference loudspeaker, and the noise is controlled by a shunt circuit of the other loudspeaker, and the coupling model of the pipe and loudspeaker is established. Then an independent and adjustable shunt circuit is designed to realize the independent regulation of the natural frequency and damping ratio of the shunt loudspeaker. By optimizing the parameters of the shunt circuit, the shunt loudspeaker can achieve a good control effect. Finally, the control effect of the designed shunt loudspeaker is numerically calculated. The results show that the designed shunt loudspeaker can effectively control the sound pressure in the pipe. Compared with the traditional active noise control method, the main advantage of this method is that the control system does not need error sensor and controller, the structure is simple and the practical use is convenient.
【作者單位】: 南昌航空大學飛行器工程學院;
【基金】:國家自然基金項目11464031,51265037 航空科學基金項目2015ZA56002 江西省高?萍悸涞赜媱澷Y助項目KJLD12075 江西省研究生創(chuàng)新專項資金項目YC2016-S336
【分類號】:TB535
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