Multi-channel ANC System with Online Secondary Path Modeling for Turboprop Aircraft Cabin

IF 1.7 4区物理与天体物理 Acoustics Australia Pub Date : 2024-04-23 DOI:10.1007/s40857-024-00317-z

Hao Shen, Qing Xue, Ningjuan Dong, Yixiao Chen, Xing Shen

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Abstract

The engineering implementation of the multi-channel active noise control (MCANC) system for turboprop aircraft cabin is seriously hampered by its enormous computational complexity. This paper proposes the variable-P-sequential-partial-update filtered-x least mean square (VP-SPUFxLMS) algorithm, which achieves noise reduction performance comparable to that of the multi-channel FxLMS (MCFxLMS) algorithm while significantly reducing the computational complexity. Additionally, considering the time-varying nature of the secondary paths in practical applications, the Eriksson online secondary path modeling (OSPM) method is extended from single-channel to multi-channel, the problems that may be faced when the method is applied to MCANC systems are analyzed, and an improved alternative online secondary path modeling (AOSPM) method is proposed to address the above problems, which exhibits great online modeling capabilities without introducing excessive computational load. Simulation and experiment results validate the noise control performance of the proposed method, and the ANC experiment has achieved an average reduction of more than 15 dB in the sound pressure level (SPL) of the four channels, which fully demonstrates its broad engineering application prospects.

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用于涡轮螺旋桨飞机客舱的带在线次级路径建模的多通道 ANC 系统

涡轮螺旋桨飞机客舱多通道有源噪声控制系统（MCANC）的工程实施因其巨大的计算复杂性而受到严重阻碍。本文提出了可变-P-序列-部分更新滤波-x 最小均方差（VP-SPUFxLMS）算法，在显著降低计算复杂度的同时，实现了与多通道 FxLMS（MCFxLMS）算法相当的降噪性能。此外，考虑到实际应用中二次路径的时变性，将 Eriksson 在线二次路径建模（OSPM）方法从单通道扩展到多通道，分析了该方法应用于 MCANC 系统时可能面临的问题，并针对上述问题提出了一种改进的替代在线二次路径建模（AOSPM）方法，该方法在不引入过多计算负荷的情况下展现了强大的在线建模能力。仿真和实验结果验证了所提方法的噪声控制性能，ANC 实验实现了四个通道声压级 (SPL) 平均降低 15 dB 以上，充分展示了其广阔的工程应用前景。

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来源期刊

Acoustics Australia ACOUSTICS-

自引率

5.90%

发文量

期刊介绍： Acoustics Australia, the journal of the Australian Acoustical Society, has been publishing high quality research and technical papers in all areas of acoustics since commencement in 1972. The target audience for the journal includes both researchers and practitioners. It aims to publish papers and technical notes that are relevant to current acoustics and of interest to members of the Society. These include but are not limited to: Architectural and Building Acoustics, Environmental Noise, Underwater Acoustics, Engineering Noise and Vibration Control, Occupational Noise Management, Hearing, Musical Acoustics.