Experimental Study on Active Control for Propeller Radiated Sound Fields
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摘要: 水下航行器航行时, 推进器会产生明显的低频线谱辐射噪声。为了验证不同有源控制策略对线谱辐射噪声的控制效果, 首次在实际小型推进器上开展了辐射声场有源控制试验研究。搭建包含推进器、传感器、次级力源、次级声源及控制系统的水下试验平台, 分别进行有源噪声控制、有源振动控制以及有源声振复合控制试验。通过改变推进器工况, 测试不同控制策略对推进器水下辐射噪声的抑制效果。结果表明: 有源噪声控制对推进器低频线谱噪声抑制效果显著且稳定, 在高转速工况下效果最好; 有源振动控制效果具有局限性, 局部控制可能导致声场重构; 有源声振复合控制在部分工况下展现出协同控制潜力, 但需进一步优化控制策略与协同机制。研究成果为水下推进器辐射噪声有源控制的工程化提供了试验依据和技术支撑。Abstract: When an underwater vehicle is in motion, the propeller will generate significant low-frequency line spectrum radiation noise. To verify the control effectiveness of different active control strategies on the line spectrum radiation noise, an active control experiment on the radiation acoustic field was conducted for the first time on a real small-scale propeller. An underwater test platform, which includes a propeller, sensors, secondary force actuators, secondary sound sources, and a control system, was constructed for active noise control(ANC), active vibration control(AVC), and active noise and vibration control(ANVC) tests. By altering the working conditions of the propeller, the suppression effects of different control strategies on the underwater radiated sound pressure of the propeller were tested. The results show that active noise control has a significant and stable effect on suppressing the low-frequency line spectrum noise of the propeller, and performs best under high rotational speed conditions; active vibration control has limitations and local control may lead to sound field reconstruction; active acoustic-vibration combined control shows potential for collaborative control in some operating conditions, but the control strategy and collaborative mechanism need to be further optimized. The research results provide an experimental basis and technical support for the engineering control of underwater propeller radiated noise.
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Key words:
- Propeller acoustic field /
- Active control /
- Hybrid control /
- Control strategy /
- Underwater noise
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表 1 高转速工况下不同控制策略下降噪量
Table 1. Noise reduction under different control strategies at high-speed operating conditions
名称 H1 H2 H3 H4 H5 H6 H7 H8 ANC 15.2 15.7 13.7 14.1 16.4 17.9 13.6 15 AVC 0.2 0.1 0.3 −1.1 -2.6 −1.3 0 0 ANVC 4.9 2.4 5.7 9.9 5.8 8.6 9.7 9.5 表 2 中转速工况下不同控制策略下降噪量
Table 2. Noise reduction under different control strategies at medium-speed operating conditions
dB 名称 H1 H2 H3 H4 H5 H6 H7 H8 ANC 11.4 7.2 7.4 5.7 4.7 7.4 9.0 9.7 AVC −0.4 −0.8 −0.3 −0.4 −0.3 −0.1 0.3 −0.1 ANVC 12.6 5.2 5.6 12.1 9.3 10.8 5.5 14.4 表 3 低转速工况下不同控制策略下降噪量
Table 3. Noise reduction under different control strategiesat low-speed operating conditions
dB 名称 H1 H2 H3 H4 H5 H6 H7 H8 ANC 易发散 AVC 7.1 14 3.6 1.3 0.5 −0.2 −0.8 7.9 ANVC 易发散 -
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