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wolfjhqгæ (³õÈëÎÄ̳)
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a=1; t=0:0.001:1; fm=100;%µ¥Î»ÎªkHZ£¬µ÷ÖÆÆµÂÊ mol=0.9*a*sawtooth(2*pi*fm*t,0.5); d0=100; %Õñ·ù f0=0.1; %Õñ¶¯µÄƵÂÊ(KHZ) d=d0*sin(2*pi*f0*t); fi=4*pi*d/632.8; m=1; %µ÷ÖÆÉî¶È I=1-m*cos(mol+fi); subplot(5,1,1),plot(t,mol);axis([0,0.1,-5,5]); subplot(5,1,2),plot(t,I);axis([0,0.1,0,2]); dI=gradient(I,0.5); %¶ÔIÇó΢·Ö subplot(5,1,3),plot(t,dI);axis([0,0.1,-10,10]); ÏÂÃæ²»»áŪÁË¡£¡£¡£¡£¡£ ÈçºÎÇódIµÄÁãµã²¢ÏÔʾ³öÀ´ |
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