Active noise control for periodic disturbances

Author

Bodson, Marc ; Jensen, Jonathan S. ; Douglas, Scott C.

Author_Institution

Dept. of Electr. Eng., Utah Univ., Salt Lake City, UT, USA

Volume

9

Issue

1

fYear

2001

fDate

1/1/2001 12:00:00 AM

Firstpage

200

Lastpage

205

Abstract

Proposes an active noise control algorithm for periodic disturbances of unknown frequency. The algorithm is appropriate for the feedback case in which a single error microphone is used. A previously proposed algorithm for the rejection of sinusoidal noise sources is extended for the cancellation of multiple harmonics. Unlike many other approaches, the estimates of the frequencies of the separate harmonics are tied together within the algorithm to account for the integer multiplicative relations between them. The dynamic behavior of the closed-loop system is analyzed using an approximation that is shown, in simulations, to provide an accurate representation of the system´s behavior. Experimental results on an active noise control testbed demonstrate the success of the method in a practical environment

Keywords

active noise control; adaptive control; closed loop systems; compensation; control system synthesis; large-scale systems; matrix algebra; nonlinear control systems; stability; time-varying systems; vibration control; dynamic behavior; multiple harmonics cancellation; periodic disturbances; sinusoidal noise sources; Active noise reduction; Adaptive algorithm; Feedback; Frequency estimation; Microphones; Noise cancellation; Signal processing algorithms; Testing; Vibration control; Working environment noise;

fLanguage

English

Journal_Title

Control Systems Technology, IEEE Transactions on

Publisher

ieee

ISSN

1063-6536

Type

jour

DOI

10.1109/87.896760

Filename

896760