摘要
提出了一种管道噪声有源控制延迟LMS算法。该算法将传统FxLMS算法中的次级通道简化为纯延时环节,降低算法运算复杂性。通过研究次级通道延时,分析了实际次级通道及收敛步长对算法稳定性及收敛速度的影响,并通过仿真进行了验证。
A delayed least mean square （DLMS） algorithm was proposed for active noise contol in ducts. The proposed algorithm, which can reduce the computational complexity, was based on the hypothesis that the secondary path for the conventional Filtered-x LMS （FxLMS） algorithm can be simplified to a pure delay. By studying the secondary path delay, the practical second path performance and the convergence step size were analysed to show the effects on stability and convergence behavior of the algorithm. Validity of the proposed algorithm was verified by simulation.
出处
《机床与液压》
北大核心
2008年第B07期214-216,248,共4页
Machine Tool & Hydraulics
基金
安徽省教育厅自然科学研究项目(KJ2008B102)
关键词
延迟LMS
次级通道
步长
Delayed LMS
Sencondary path
Step size
