通過分流揚(yáng)聲器實(shí)現(xiàn)管道噪聲控制
[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(xué)飛行器工程學(xué)院;
【基金】:國(guó)家自然基金項(xiàng)目11464031,51265037 航空科學(xué)基金項(xiàng)目2015ZA56002 江西省高?萍悸涞赜(jì)劃資助項(xiàng)目KJLD12075 江西省研究生創(chuàng)新專項(xiàng)資金項(xiàng)目YC2016-S336
【分類號(hào)】:TB535
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