摘要
在前馈有源噪声控制中 ,由于次级通道传递函数往往是非最小相位系统 ,直接使用传统的FXLMS算法时 ,导致系统的性能下降。提出一种基于NMP逆控制的自适应前馈有源噪声控制FXLMS算法 ,在电机、风机、通风管道系统上进行实时ANC实验 ,结果表明较传统的前馈FXLMS算法ANC系统消声性能有明显的改进。
The feedforward ANC is effective to attenuate wide-band acoustical noise,and therefore has get wide application.In the feedforward ANC,when the traditional FXLMS algorithm is applied directly,non-minimum phase(NMP) of the secondary-path transfer function will lead to the performance degradation.In the paper,a new NMP adaptive inverse control based FXLMS algorithm is proposed.The real-time ANC experiments on the fan duct system are implemented,and its results show that the proposed algorithm has advantages over standard feedforward FXLMS algorithm.
出处
《振动与冲击》
EI
CSCD
北大核心
2004年第4期116-118,共3页
Journal of Vibration and Shock
