Optimization of Secondary Source Configuration for Active Noise Control in a Helicopter Cabin

Jian Xu, Kean Chen, Yang Liu, Qinhua Wei

科研成果: 会议稿件论文同行评审

摘要

The helicopter cabin noise generated by a rotating rotor is mainly characterized by discrete line-spectra in low frequency range and thus suitable for active control. In an active noise control system, the configuration of secondary sources plays a significant role for determining noise reduction. In this study, sound field reproduction methods are applied to optimize the configuration of secondary sources in a helicopter cabin using a finite element (FE) model, and to reduce the noise level at passengers’ ears. The least-absolute shrinkage and selection operator (Lasso) is used to select a reduced set of secondary sources for three harmonic frequencies, respectively. The selection of the sparsity-tuning parameter is discussed in detail under power and number constraint. The Tikhonov-regularized least squares (LS) problem is solved to smooth amplitudes of loudspeakers under power constraint.

源语言英语
出版状态已出版 - 2017
活动46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 - Hong Kong, 中国
期限: 27 8月 201730 8月 2017

会议

会议46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017
国家/地区中国
Hong Kong
时期27/08/1730/08/17

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