A new online secondary path modelling method for feedforward active noise control systems

Davari, Pooya & Hassanpour, Hamid (2008) A new online secondary path modelling method for feedforward active noise control systems. In IEEE International Conference on Industrial Technology (ICIT 2008), 21-24 April 2008, Chengdu, China.

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Abstract

An online secondary path modelling method using a white noise as a training signal is required in many applications of active noise control (ANC) to ensure convergence of the system. Not continually injection of white noise during system operation makes the system more desirable. The purposes of the proposed method are two folds: controlling white noise by preventing continually injection, and benefiting white noise with a larger variance. The modelling accuracy and the convergence rate increase when a white noise with larger variance is used, however larger the variance increases the residual noise, which decreases performance of the system. This paper proposes a new approach for online secondary path modelling in feedfoward ANC systems. The proposed algorithm uses the advantages of the white noise with larger variance to model the secondary path, but the injection is stopped at the optimum point to increase performance of the system. Comparative simulation results shown in this paper indicate effectiveness of the proposed approach in controlling active noise.

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ID Code: 59199
Item Type: Conference Paper
Refereed: Yes
Keywords: feedforward
DOI: 10.1109/ICIT.2008.4608475
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 05 May 2013 22:20
Last Modified: 26 Jul 2013 03:15

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