Page 126 - 《应用声学》2022年第5期

第 41 卷 第 5 期 Vol. 41, No. 5
2022 年 9 月 Journal of Applied Acoustics September, 2022

⋄ 研究报告 ⋄

水下流激孔腔噪声前馈有源控制实验研究

钟丽琴 1,2 宋哲男 1,2 常道庆 1† 吴 鸣 1,2 程晓斌 1,2

(1 中国科学院噪声与振动重点实验室 (声学研究所) 北京 100190)
(2 中国科学院大学 北京 100049)

摘要：水流流经腔体时引起的自激振荡会形成流激噪声，该文通过仿真和实验研究了水下流激孔腔噪声的主
动声场控制。应用有源前馈控制方法，对比了参考信号的选取以及控制器中增加的泄露因子对控制结果的影
响，并在水循环管路中对流激孔腔噪声前馈控制效果进行了实验验证。研究结果表明，前馈有源噪声控制方法
可有效抑制水下流激孔腔噪声，在误差点和辅助观测点都取得了良好的降噪效果，最大降噪量大于 8 dB，并且
使用腔内信号作为参考的控制效果优于上游信号作为参考。
关键词：水下流激孔腔噪声；前馈有源噪声控制；水循环管路实验
中图法分类号: TB535.2 文献标识码: A 文章编号: 1000-310X(2022)05-0802-06
DOI: 10.11684/j.issn.1000-310X.2022.05.015

Experimental study on feedforward control of flow-induced cavity noise
in the water

ZHONG Liqin 1,2 SONG Zhenan 1,2 CHANG Daoqing 1 WU Ming 1,2 CHENG Xiaobin 1,2

(1 Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences,
Beijing 100190, China)
(2 University of Chinese Academy of Sciences, Beijing 100049, China)

Abstract: The self-sustained oscillation caused by water flowing over the cavity forms flow-induced cavity noise.
In this paper, the active noise control of flow-induced cavity noise in water was studied through simulation
and experiment. The feedforward control method was applied and the selection of the reference signal and the
influence of the leakage factor added in the controller on the feedforward control results were compared. The
feedforward control effect of flow-induced cavity noise was verified in water circulation pipeline. The results
show that the active noise control method can effectively suppress the flow-induced cavity noise and achieve
good noise reduction at both the error point and the auxiliary observation points, with a maximum noise
reduction of more than 8 dB. Moreover, the control effect with the cavity signal as the reference signal is better
than that with the upstream signal as the reference.
Keywords: Flow-induced cavity noise in water; Feedforward control; Water circulation pipeline experiments

2021-11-10 收稿; 2021-12-22 定稿
作者简介: 钟丽琴 (1996– ), 女, 福建龙岩人, 硕士研究生, 研究方向: 信号与信息处理。
† 通信作者 E-mail: changdq@mail.ioa.ac.cn