单室扩张式复合有源消声器的阻抗控制模型

Impedance Control Model for the Single Expansion Chamber Hybrid Active Silencer

采用等效电—声类比的方法,建立了与单室扩张式消声器相结合的发动机排气有源消声器的阻抗控制理论模型,并建立了相应的实物模型。研究结果表明,复合有源消声器的消声效果取决于次级扬声器位置的等效声阻抗以及无源式消声管道本身的阻抗分布特性。

Developed the impedance control model for the one-chamber engine exhaust hybrid active silencer from theory to reality. The property of the hybrid active silencer relies on the equivalent impedance at the secondary sound source position and the impedance distribution characteristics of the one-chamber pipe itself.