Active noise control of sound wave in a one-dimensional duct

Author

Sawada, Yuichi ; Ohsumi, Akira

Author_Institution

Dept. of Mech. & Syst. Eng., Kyoto Inst. of Technol., Japan

Volume

5

fYear

2000

fDate

2000

Firstpage

3013

Abstract

This paper describes a feedback controller for reducing traveling waves in a one-dimensional duct with air flow. The one end of the relevant duct is open to the air, and a fan is installed at the other end. In order to control and reduce the noisy sound radiating from the open end of the duct, the amplitude of the traveling waves propagating to the open end from the fan should be minimized, because the power of sound radiation from the open end depends on the amplitude of the traveling waves. Based on the mathematical model derived earlier by the authors (1997) on the sound pressure in the duct, a finite-dimensional controller is designed for the electric speaker equipped near the open-end of the duct to reduce the noise from flowing outside. Simulation studies provide some numerical results

Keywords

acoustic wave propagation; active noise control; feedback; linear quadratic Gaussian control; multidimensional systems; 1D air duct; active noise control; feedback; finite-dimensional model; linear quadratic Gaussian control; sound wave; traveling wave propagation; travelling acoustic waves; Acoustic noise; Acoustic propagation; Active noise reduction; Adaptive control; Ducts; Loudspeakers; Mathematical model; Noise level; Noise reduction; Pressure control;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2000. Proceedings of the 2000

Conference_Location

Chicago, IL

ISSN

0743-1619

Print_ISBN

0-7803-5519-9

Type

conf

DOI

10.1109/ACC.2000.879118

Filename

879118