改进包络滤波算法及在电路信号中的应用  

Improved envelope filtering algorithm and its application in the circuit of signal

作　　者：林德荣[1] 赖添悦 林琼斌[1] 王武[1] LIN Derong LAI Tianyue LIN Qiongbin WANG Wu(College of Electrical Engineering and Automation,Research Center for Advanced Process Control,Fuzhou University,Fuzhou,Fujian 350116,China)

机构地区：[1]福州大学电气工程与自动化学院福州大学先进控制技术中心,福建福州350116

出　　处：《福州大学学报（自然科学版）》2017年第3期362-366,373,共6页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省自然科学基金资助项目(2013J01178)

摘　　要：分析多次采样取平均值和经典的包络均值方法,指出这两种方法的优缺点.提出改进的增量包络均值滤波(I-EMF)算法:先将采样信号递归平均重建,以削弱幅值过高的噪声信号点;然后在实时提取的重建信号上下包络中引入合理的衰减量;最后计算包络均值作为真实信号的估计值.通过仿真分析和实验验证,该算法具有较好的信号处理与去噪性能.We analyse the multiple sampling average and classic envelope average method,point out the advantages and disadvantages of the two methods. Then an improved incremental envelope mean filter （I-EMF） algorithm is proposed. First,recursiving average reconstruction of sampled signals in order to weaken the noise signal at high amplitude. Reasonable attenuation is then introduced in the re-al time extraction of the reconstructed signal.Finally,the estimated value of the envelope is estimated as the real signal.Through simulation analysis and experimental verification, the algorithm has better denoising performance and signal processing.

关 键 词：反馈信号 信号去噪 包络滤波 信号检测 

分 类 号：F407.67[经济管理—产业经济]