通过极点配置方法设计分流扬声器

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (24) : 80-84.

论文

通过极点配置方法设计分流扬声器

柳维玮1，毛崎波1,2

作者信息 +

Design of shunt loudspeaker by using the pole placement method

LIU Weiwei1，MAO Qibo1,2

Author information +

文章历史 +

摘要

提出极点配置方法设计分流扬声器电路参数，从而实现管道噪声控制。首先建立管道-扬声器耦合的数学模型以及分流扬声器数学模型，并求解得到分流扬声器控制系统的极点特征方程。运用主导极点的性质，推导出最佳的电阻值和电感值。并且通过数值计算分析分流扬声器在不同位置时的控制效果，从而分析得到最佳的分流扬声器位置。最后通过实验初步验证了所设计的分流扬声器控制管道噪声的效果。从数值计算和实验的结果中可以看出：通过极点配置方法设计的分流扬声器电路参数以及分流扬声器位置对管道噪声的控制效果良好。

Abstract

The shunt loudspeaker is imposed to control the duct noise.The shunt circuit of the loudspeaker was optimized by using the pole placement method.First, the duct-loudspeaker coupling model as well as the shunt loudspeaker model was built up.Then the characteristic equation of the shunt loudspeaker control system pole was obtained.Considering dominant pole feature, the optimal parameters value of resistances and inductances were obtained.Meanwhile, the location of the shunt loudspeaker effect on the control performance was discussed in detail, and the optimal shunt loudspeaker locations for different target modes were presented.Finally, the duct noise control using shunt loudspeaker was experimentally verified.The numerial and experimental results show that the parameters of shunt loudspeaker circuit can be optimized by using the pole placement method.

导出引用

柳维玮1，毛崎波1,2. 通过极点配置方法设计分流扬声器[J]. 振动与冲击, 2018, 37(24): 80-84

LIU Weiwei1，MAO Qibo1,2. Design of shunt loudspeaker by using the pole placement method[J]. Journal of Vibration and Shock, 2018, 37(24): 80-84

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