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Appl. Sci. 2017, 7(12), 1236; doi:10.3390/app7121236

A New Online Secondary Path Modeling Method with An Auxiliary Noise Power Scheduling Strategy for Narrowband Active Noise Control Systems

Department of Automatic Testing and Control, Harbin Institute of Technology, Harbin 150080, China
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Received: 10 October 2017 / Revised: 9 November 2017 / Accepted: 27 November 2017 / Published: 29 November 2017
(This article belongs to the Section Acoustics)
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Abstract

In recent years, the online secondary path modeling (SPM) method with an auxiliary noise power scheduling strategy has been crucial for active noise control (ANC) systems and has also become a popular research topic. However, most scheduling strategies have been designed for broadband active noise control (BANC), and these ideas may not be directly applied to narrowband active noise control (NANC) systems due to the difference in structure between BANC and NANC systems. In this paper, a new online SPM method with auxiliary noise power scheduling is proposed. Here, the controlled system is adapted using the filtered-x weighted accumulated least mean square (FXWALMS) algorithm proposed by the authors. Moreover, the auxiliary noise power is scheduled based on the convergence status of the forgetting factor to accurately track the change in the NANC system. As a result, the proposed method not only achieves good modeling accuracy and fast convergence but also considerably increases noise attenuation. Extensive simulations are conducted to prove the superior performance of the proposed method in various scenarios. View Full-Text
Keywords: narrowband active noise control (NANC); FXLMS algorithm; online secondary path modeling (SPM); forgetting factor; noise power scheduling narrowband active noise control (NANC); FXLMS algorithm; online secondary path modeling (SPM); forgetting factor; noise power scheduling
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MDPI and ACS Style

Sun, C.; Liu, Y.; Bo, Z.; Jiang, S. A New Online Secondary Path Modeling Method with An Auxiliary Noise Power Scheduling Strategy for Narrowband Active Noise Control Systems. Appl. Sci. 2017, 7, 1236.

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