| 钟丽琴,宋哲男,常道庆,吴鸣,程晓斌.水下流激孔腔噪声前馈有源控制实验研究[J].,2022,41(5):802-807 |
| 水下流激孔腔噪声前馈有源控制实验研究 |
| Experimental study on feedforward control of flow-induced cavity noise in water |
| 投稿时间：2021-11-10 修订日期：2022-08-29 |
| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
| DOI：10.11684/j.issn.1000-310X.2022.05.015 |
| 中文关键词: 水下流激孔腔噪声 前馈有源噪声控制 水循环管路实验 |
| 英文关键词: flow-induced cavity noise in water feedforward control water circulation pipeline experiments |
| 基金项目: |
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