基于LabVIEW的自适应滤波器设计与研究  

Design and Study of Adaptive Filter with LabVIEW

作　　者：危淑平[1] 摆玉龙[1] 许国威[1] 

机构地区：[1]西北师范大学物理与电子工程学院,兰州730070

出　　处：《微计算机应用》2011年第3期12-17,共6页Microcomputer Applications

基　　金：甘肃省科技计划项目(1010RJZA021);甘肃省教育厅研究生导师项目(0901B-03);西北师范大学科研骨干培育项目(NWNU-KJCXGC-03-54)

摘　　要：针对自适应滤波器编程复杂,难以按照虚拟仪器系统的形式来测试工程应用中的实际性能等问题。文中利用LabVIEW8.6提供的自适应滤波器工具包,设计了基于最小均方误差算法、递推最小二乘算法的自适应滤波器,并对影响两种算法的参数对滤波器的敏感性进行了分析;进而,利用音频信号验证了滤波器性能。仿真结果表明,所设计的自适应滤波器功能全面,人机交互界面良好,便于工程技术人员快速开发,具有较好的工程实用价值。In order to solve the complex programming problem of adaptive filters and the inconvenient to test the actual performance of filters as a virtual instrument system in real applications,the Least Mean Square（LMS） and Recursive Least Square （RLS） algorithms based adaptive filters are designed based on adaptive filter toolkit of LabVIEWS. 6. The parameters which can affect these two algorithms are carried on the analysis to filter＇s sensitivity and the filters＇ s performance are verified by audio signal. The simulation results shows the function comprehensive characteristic of the adaptive filters with the good man - machine interface. It can be convenient for engineers to develop efficiently, So, the system developed in this paper has good practical engineering value.

关 键 词：虚拟仪器 自适应滤波器 最小均方算法 递推最小二乘算法 

分 类 号：TN713[电子电信—电路与系统]