噪声与振动控制2016，Vol.36Issue(6)：106-110,5.DOI:10.3969/j.issn.1006-1335.2016.06.021
风洞一维离散噪声ANC技术研究
Research on 1-D Discrete Noise ANC System in Wind Tunnels
顾正华 1王飞 1盖文 1周平1
作者信息
- 1. 中国空气动力研究与发展中心 设备设计与测试技术研究所，四川 绵阳 621000
- 折叠
摘要
Abstract
Noise of wind tunnels can seriously reduce the reliability and precision of wind tunnel testing. Thus, noise reduction of wind tunnels has become a key technical issue of wind tunnel construction. In this paper, a 1-D discrete active noise control (ANC) is put forward based on Fx-LMS. The results indicate that this method can minimize the error caused by microphone mismatch, decrease the influence of the weight coefficients changing on the system and increase the system convergence speed. According to the optimized algorithm parameters, the active noise control test of the duct is done in an anechoic chamber of 0.55m×0.4m of the aero-acoustic wind tunnel. Good noise reduction effect is obtained.关键词
声学/风洞/背景噪声/Fx-LMS自适应算法/主动控制/降噪Key words
acoustics/wind tunnel/background noise/Fx-LMS adaptive algorithm/active noise control (ANC)/noise decrease引用本文复制引用
顾正华,王飞,盖文,周平..风洞一维离散噪声ANC技术研究[J].噪声与振动控制,2016,36(6):106-110,5.
