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J Acoust Soc Am. 2019 Apr;145(4):EL291. doi: 10.1121/1.5097603.

Robust Wiener controller design with acoustic feedback for active noise control systems.

Author information

1
School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao, Shandong 266520, China.
2
Centre for Vision, Speech and Signal Processing, University of Surrey, Guildford GU2 7XH, United Kingdom.
3
Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, Chinaanfy@qut.edu.cn, caoyfive@gmail.com, mingwu@mail.ioa.ac.cn, hlsun@mail.ioa.ac.cn, Liubilong@qut.edu.cn, jyang@mail.ioa.ac.cn.

Abstract

Although the acoustic feedback could be alleviated by the neutralization method with a feedback model, an active noise control system could still suffer from being unstable if the feedback path exhibits significant variations. In this letter, a modified Wiener controller is introduced to enhance the robust stability with a fixed feedback neutralization filter. The proposed controller is designed with frequency-weighted penalties, which are adjusted iteratively according to Nyquist stability criterion. Experiment results based on a ventilation duct system shows that the robust stability could be achieved with the proposed method while a relatively good performance could be maintained.

PMID:
31046357
DOI:
10.1121/1.5097603

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