中国舰船研究2017，Vol.12Issue(4)：122-127,131,7.DOI:10.3969/j.issn.1673-3185.2017.04.019
充液管路低频线谱噪声有源控制试验研究
Experimental research into active control of low-frequency line spectral disturbances in liquid-filled pipe
摘要
Abstract
Noise radiation through the liquid-filled pipe system is the focus of noise control in the pipe systems of ships, while low-frequency line spectral disturbances with high energy need to be further suppressed. An Active Noise Control (ANC) system adapted to liquid-filled pipes is designed to attenuate low-frequency line spectral disturbances. This system is made up of the secondary source, controller, power amplifier, sensor etc. The system uses a frequency tracking algorithm to estimate the frequencies of noise, and a complex LMS algorithm to design the controller. A pump water circulation pipe system is implemented to validate the control system's performance in noise reduction through experiments. Active control experiments on noise sources with fixed frequency, sweeping frequency and multi-frequency are carried out respectively. The results show that the control system can track frequencies automatically, and effectively reduce the noise radiating from the pipe in cases of fixed frequency, sweeping frequency and multi-frequency. The ANC system can achieve noise attenuation of over 8 dB at multi-frequencies in liquid-filled pipes, and has good robustness. This provides a possible solution for the noise control of low-frequency line spectral disturbances in the pipe systems of ships.关键词
充液管路/低频线谱/频率追踪/有源噪声控制Key words
liquid-filled pipes/low-frequency line spectral/frequency tracking/active noise control分类
交通工程引用本文复制引用
孙运平,孙红灵,张维,王晗,杨军..充液管路低频线谱噪声有源控制试验研究[J].中国舰船研究,2017,12(4):122-127,131,7.基金项目
国家自然科学基金资助项目(11474306) （11474306）
