BP神经网络拟合正弦函数含扰动

clc
clear all
BP_Goal=0.01;                                   % BP训练的精度
BP_Epochs=100;                                   % BP训练的步长
p=[-1:.05:1];
t=sin（2*pi*p）+0.1*randn（size（p））;
net=newff（minmax（p）[201]{‘tansig‘‘purelin‘}