文章摘要
张帅,王岩松,张心光.汽车车内噪声主动控制变步长NFB-LMS算法[J].声学技术,2019,38(6):680~685
汽车车内噪声主动控制变步长NFB-LMS算法
A variable step-size NFB-LMS algorithm for active vehicle interior noise control
投稿时间:2018-06-09  修订日期:2018-07-24
DOI:10.16300/j.cnki.1000-3630.2019.06.014
中文关键词: 汽车内部噪声  主动噪声控制  变步长NFB-LMS算法  算法收敛速度  稳态误差
英文关键词: vehicle interior noise  active noise control  variable step-size NFB-LMS algorithm  convergence speed  steady-state error
基金项目:国家自然科学基金项目(51675324)、上海汽车工业科技发展基金(1523)
作者单位E-mail
张帅 上海工程技术大学汽车工程学院, 上海 201620  
王岩松 上海工程技术大学汽车工程学院, 上海 201620 jzwbt@163.com 
张心光 上海工程技术大学汽车工程学院, 上海 201620  
摘要点击次数: 774
全文下载次数: 458
中文摘要:
      为规避最小均方(Least Mean Square,LMS)算法不能同时提高收敛速度和降低稳态误差的固有缺陷,以及已有变步长LMS算法存在收敛速度慢和稳态误差估计精度差的问题,文中提出了一种基于变步长归一化频域块(Normalized Frequency-domain Block,NFB) LMS算法的汽车车内噪声主动控制方法。为了比较,应用传统的LMS算法、基于反正切函数的变步长LMS算法和变步长NFB-LMS算法分别进行实测汽车车内噪声的主动控制。结果表明,与其他两个算法相比,变步长NFB-LMS算法的收敛速度提高了70%以上,稳态误差减小了90%以上。变步长NFB-LMS算法在处理车内噪声信号时具有很高的效率,为进行汽车车内噪声主动控制提供了一种新方法。
英文摘要:
      The LMS algorithm has an inherent shortcoming that the convergence speed can not be increased simultaneously with reducing the steady-state error. For the existing variable step-size LMS algorithm the convergence rate is low and the accuracy of estimating steady-state residual error is poor. To avoid such disadvantages, an active control method of vehicle interior noise based on variable step-size NFB-LMS algorithm is presented in this paper. The traditional LMS algorithm, the variable step-size LMS algorithm based on arctangent function and the variable step-size NFB-LMS algorithm are respectively applied to the active control experiments of the measured vehicle interior noise for comparison. The results show that the convergence speed of the variable step-size NFB-LMS algorithm is increased by 70% and the steady-state error is reduced by more than 90%, compared with the other two algorithms. Therefore, the variable step-size NFB-LMS algorithm has high efficiency in processing the vehicle interior noise signals, and provides a new method for active control of vehicle interior noise.
查看全文   查看/发表评论  下载PDF阅读器
关闭