中文摘要：

介绍了一种主动消声器的结构、消声过程、工作原理及主动吸声原理。该主动消声器的工作过程是通过主动吸声理论来实现的,在消声器的内壁敷设两层PVDF薄膜作为压电传感器,分别检测入射声波和反射声波;在传感器外敷设一层压电陶瓷作为作动器,并通过压电材料的压电性能来控制入射的声压信号,使其不再反射,以达到主动吸声的效果。用MATLAB软件进行仿真,验证了该理论的可行性。

英文摘要：

The paper mainly introduces the active muffler noise structure, elimination process, working principle and the active sound absorption principle. The working process of the active muffler is achieved through the active sound absorption theory, on the inner wall of the muffler is equipped with two layers of PVDF film as the piezoelectric sensor to detect the incident waves and reflect waves, again outside sensors for laying a layer of piezoelectric ceramics as actuators, and through the piezoelectric properties of piezoelectric material to control the incidence of acoustic pressure signal reflection, and it no longer reflect and achieve the active sound absorption effect. MATLAB software simulation is used to verify the feasibility of the theory.