面向工程应用的在线建模主动噪声控制方法改进

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摘要通常在主动噪声控制系统中采取次级路径在线建模方式会带来更大计算量以及容易导致系统不稳定，使得该方法一直难以得到工程应用。针对此问题，论文提出面向工程应用的改进措施，具体包括在次级路径建模环节采取次级声源依序发声方式以消除次级路径相互耦合的影响，增强系统稳定性；在噪声控制环节采用多通道快速算法降低计算量，减少系统信号处理负荷。经Matlab进行仿真效果验证之后，基于NI-PXI平台开展主动噪声控制实验，结果表明，采用以上措施成功降低了计算量、改善了系统稳定性，取得了较好的降噪效果，各位置的平均降噪量能达13dB以上，关键频率处降噪量能达18dB以上，具备工程应用的可行性。

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	鹿澳沣1
	董宁娟2
	陈逸笑2
	薛青2
	沈昊1
	沈星1

关键词 ：有源噪声控制, 次级路径在线建模, 附加建模信号, 工程应用

Abstract：The application of online secondary path modeling to active noise control system give rise to larger calculations and result in system instability. This makes it hard for the method to be applied to engineering projects. In view of this, the paper puts forward some improvement measures for engineering application, includingthe method of sequential sounding of secondary sound sources during the secondary path modeling process was adopted to eliminate the effects of the secondary path intercoupling to improve system stability. Besides, multichannel fast algorithm was adopted during the noise control process to minimize calculations and lessen system signal processing load. Matlab-based simulation verification was conducted on the proposed methods and active noise control experiments were carried out based on NI-PXI platform. As revealed by the results, the aforesaid methods succeeded in lessening calculations and improving system stability, with desirable noise reduction effects. The noise reduction at various positions averaged up to13dB. For the key frequencies, the noise reduction came to above 18dB. The aforesaid methods have the potential to be applied to engineering projects.

Key words： active noise control secondary path online modeling supplementary modeling sign；application in engineering

收稿日期: 2022-12-06 出版日期: 2023-10-28

引用本文:

鹿澳沣1，董宁娟2，陈逸笑2，薛青2，沈昊1，沈星1. 面向工程应用的在线建模主动噪声控制方法改进[J]. 振动与冲击, 2023, 42(20): 253-262.
LU Aofeng1, DONG Ningjuan2, CHEN Yixiao2, XUE QING2, SHEN Hao1, SHEN Xing1. Improvement in engineering-application-oriented online modeling active noise control methods. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(20): 253-262.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I20/253

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