Active noise cancellation in ducts using internal model-based control algorithms

Author

Hu, Jwu-Sheng

Author_Institution

Dept. of Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

4

Issue

2

fYear

1996

fDate

3/1/1996 12:00:00 AM

Firstpage

163

Lastpage

170

Abstract

A feedback control algorithm based on the internal model principle is proposed to solve the active noise control (ANC) problem in ducts. Because of its infinite open-loop gain at selected frequencies, the controller is able, at the cancellation speaker position, to block noise transmission of these frequencies. In other words, the speaker acts like a totally reflective boundary. Stability analysis of the closed-loop system is performed using the Nyquist criterion. Experimental results confirm the theoretical analysis, showing an average noise level reduction of 30 to 40 dB at the target frequencies

Keywords

Nyquist criterion; active noise control; feedback; model reference adaptive control systems; Nyquist criterion; active noise cancellation; active noise control; closed-loop system; ducts; feedback control algorithm; infinite open-loop gain; internal model-based control algorithms; stability analysis; totally reflective boundary; Acoustic noise; Adaptive filters; Ducts; Feedback; Finite impulse response filter; Frequency; IIR filters; Noise cancellation; Open loop systems; Signal processing algorithms;

fLanguage

English

Journal_Title

Control Systems Technology, IEEE Transactions on

Publisher

ieee

ISSN

1063-6536

Type

jour

DOI

10.1109/87.486342

Filename

486342