提高发动机排气噪声有源控制中误差通道辨识精度的仿真研究  

A Simulation Study on Improving the Error Channel Identification Accuracy in Active Control System of Engine Exhaust Noise

作　　者：陈松[1] 王爱国[2] 孙旭[1] 

机构地区：[1]南通航运职业技术学院交通工程系,江苏南通226010 [2]南通出入境检验检疫局,江苏南通226010

出　　处：《南通航运职业技术学院学报》2012年第1期53-56,共4页Journal of Nantong Vocational & Technical Shipping College

摘　　要：文章通过给误差通道的输入端外加伪随机信号序列,实现在线辨识该通道,来保证Filtered-XLMS算法快速收敛。通过分析并利用MATLAB建立了仿真模型,由仿真结果与SY156FM型摩托车发动机采集的数据对比分析发现,该方法具有收敛速度快,实时性强,能够起到很好的辨识效果,从而使整个系统取得了很好的降噪效果。A pseudo-random signal sequence added to the input of error channel,this article attempts to achieve line identification to ensure that the Filtered-XLMS algorithm converges rapidly.A simulation model was established through MATLAB.Comparing the simulation results with the data from SY156FM motorcycle engine,this article concludes that this approach has the advantages of fast convergence,strong real-time,good identification,producing the desired effect of noise reduction.

关 键 词：发动机排气噪声 系统辨识 误差通道 Filtered XLMS算法 MATLAB 

分 类 号：TK411[动力工程及工程热物理—动力机械及工程]