通过分流扬声器实现管道噪声控制
发布时间：2018-11-19 08:49
【摘要】：提出通过分流扬声器控制管道噪声。首先采用一个干扰扬声器放置在管道的一端作为噪声源,另一个扬声器外接分流电路组成分流扬声器对管道噪声进行控制,并建立管道-扬声器耦合模型。然后设计参数独立可调的分流电路,实现对分流扬声器的固有频率和阻尼比的独立调节,通过优化分流电路的参数,从而使得分流扬声器达到良好的控制效果。最后对所设计的分流扬声器的控制效果进行了数值计算。结果表明:所设计的分流扬声器能够有效控制管道内的声压。与传统的噪声主动控制方法相比,该方法的主要优点在于控制系统不需要误差传感器和控制器,结构简单,实际使用方便。
[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.
【作者单位】： 南昌航空大学飞行器工程学院;
【基金】：国家自然基金项目11464031,51265037 航空科学基金项目2015ZA56002 江西省高校科技落地计划资助项目KJLD12075 江西省研究生创新专项资金项目YC2016-S336
【分类号】：TB535
本文编号：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.
【作者单位】： 南昌航空大学飞行器工程学院;
【基金】：国家自然基金项目11464031,51265037 航空科学基金项目2015ZA56002 江西省高校科技落地计划资助项目KJLD12075 江西省研究生创新专项资金项目YC2016-S336
【分类号】：TB535
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