A simplified adaptive feedback active noise control system

被引：40

作者：

Wu, Lifu ^{[1
,2
,3
]}

Qiu, Xiaojun ^{[2
,3
,4
]}

Guo, Yecai ^{[1
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Jiangsu Key Lab Meteorol Observat & Informat Proc, Nanjing 210044, Jiangsu, Peoples R China

[2] Nanjing Univ, Key Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China

[3] Nanjing Univ, Inst Acoust, Nanjing 210093, Jiangsu, Peoples R China

[4] RMIT Univ, Sch Elect & Comp Engn, Melbourne, Vic, Australia

来源：

APPLIED ACOUSTICS | 2014年 / 81卷

关键词：

Active noise control; Adaptive feedback; Internal model control; IMPLEMENTATION; DESIGN; SOUND;

D O I：

10.1016/j.apacoust.2014.02.006

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In the adaptive feedback active noise control system based on the internal model control (IMC) structure, the reference signal is regenerated by synthesizing the error signal and the secondary signal filtered with the estimation of the secondary path, hence more computation load and extra programming are required. Motivated by the engineering truth that the primary noise cannot be completely cancelled in most practical active noise control applications and the error signal still contains some portions of the primary noise, a simplified adaptive feedback active noise control system is proposed in this paper, which adopts the error signal directly as the reference signal in an adaptive feedforward control system and utilizes the leaky filtered-x LMS algorithm to update the controller. The convergence properties of the proposed system are investigated and its advantages are discussed by comparing with other feedback control systems as well as the weakness. Finally, simulations and experiments are carried out to demonstrate the effectiveness of the proposed system. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：40 / 46

页数：7

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