针对船舶螺旋桨在远场产生的低频线谱辐射噪声难题，本文提出了一种创新的自适应控制策略，该策略聚焦于近场法向声能流作为控制依据。通过智能有源控制系统动态调整次级声源，有效遏制了结构法向声能的传播，从而实现了对远场低频辐射噪声的精准控制。基于螺旋桨辐射噪声的仿真数据，构建了相应的主动控制仿真模型。实验结果显示，在20～100 Hz低频范围内，相较于传统基于近场声压的控制方法，新方法在维持总辐射声功率稳定的同时，显著增强了远场特定区域的噪声抑制效果，降噪面积提升幅度介于11.34%～15.18%，且低频段降噪效果尤为显著，降噪区域随频率降低而扩大。
Addressing the challenge of low-frequency line-spectrum radiation noise generated by ship propellers in the far field, this paper presents an innovative adaptive control strategy that focuses on near-field normal acoustic energy flux as the basis for control. By dynamically adjusting the secondary sound source through an intelligent active control system, the propagation of structural normal acoustic energy is effectively suppressed, thereby achieving precise control over the low-frequency radiation noise in the far field. Based on simulation data of propeller radiation noise, a corresponding active control simulation model is constructed. Experimental results show that within the low-frequency range of 20 to 100 Hz, compared to traditional control methods based on near-field sound pressure, the new method significantly enhances noise suppression in specific regions of the far field while maintaining stable total radiated sound power. The noise reduction area increases by 11.34% to 15.18%, with particularly pronounced noise reduction effects at lower frequencies, where the noise reduction area expands as the frequency decreases.
2025,47(22): 133-139 收稿日期：2025-2-28
DOI：10.3404/j.issn.1672-7649.2025.22.019
分类号：U661.44
基金项目：国家自然科学基金青年基金项目（52401369）；水声技术全国重点实验室基金资助项目（2023JCJQLB07206）
作者简介：袁佳伟（2000–），男，硕士研究生，研究方向为结构振动与噪声主动控制
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