螺桨飞机舱内噪声地面模拟及其主动控制

摘要

This paper presents the analogized methods and the active controlexperiments of the cabin noise for a propeller airplane．In a Y7 test airplane，the cabin noise is analogized by an exciter to structure-borne noise and by a loudspeaker to air-borne noise．A multi-channel adaptive control system is developed and used to attenuate the analogized noise field and satisfied results are obtained in the controlled area．%本文介绍螺桨飞机舱内噪声的地面模拟方法和主动控制实验。在一架运七试验机上，激振器和扬声器分别被用来模拟由螺桨旋转在舱内引起的结构和气动噪声。一个多通道自适应控制系统被应用于该模拟声场的主动控制实验，并在控制区域取得了满意的降噪效果。