摘要
设计了一种多路自适应主动噪声控制系统,该系统具有4路误差输入和2路抵消输出,详细介绍了系统的设计方法、结构组成和控制原理。利用该系统,在一个普通封闭房间分别完成了对160 Hz单频正弦噪声,三阶谐频噪声和实际录取的某型号潜艇噪声进行了控制实验,分别取得了20 dB、10 dB和8 dB的降噪效果,验证了该系统的可行性和有效性。
A multi-channel self-adaptive active noise control system is designed.It has four error inputs and two offset outputs.Furthermore,the structure,design method and control principle are introduced in detail.Using this system,160 Hz single-frequency sine noise,the third order harmonic sinusoidal noise and the actual noise from a certain type of submarine are experimented respectively in an ordinary closed room and the effect of 8 dB,10 dB and 20 dB are obtained respectively.The experimental result verifies the feasibility and effectiveness of the system.
出处
《测控技术》
CSCD
北大核心
2011年第8期57-59,63,共4页
Measurement & Control Technology
关键词
主动噪声控制
多通道系统
自适应滤波
active noise control
multi-channel system
adaptive filter
