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fs=5000;
% x=@(t) (2+cos(90*t).*cos(500*t+1800.*t.*t));
t=0:1/fs:0.341;
% y=x(t);
y=cos(90*t)+cos(500*t);
subplot(5,1,1);plot(t,y);xlabel('原始信号');
[pf,a,si]=lmd1(y);
subplot(5,1,2);plot(t,pf(1,:));xlabel('PF1');
subplot(5,1,3);plot(t,pf(2,:));xlabel('PF2');
subplot(5,1,4);plot(t,pf(3,:));xlabel('PF3');
subplot(5,1,5);plot(t,pf(4,:));xlabel('残量信号')
运行后出现错误，请指教。
??? Error using ==> boundary_conditions at 12
not enough extrema
Error in ==> envelope at 48
[tmin,tmax,xmin,xmax] = boundary_conditions(indmin,indmax,t,x,NBSYM);
Error in ==> zhaochun1 at 10
[envmin,envmax,envmoy,indmin,indmax,indzer] = envelope(t,h,'spline');
Error in ==> lmd1 at 18
[pf,a,si]=zhaochun1(a,h,wucha1); |
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发表于 2013-5-10 16:08
显身卡