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

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.