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MATLAB画带延时系统的伯德图
2022-07-27 10:59:00 【char~lie】
最简单画Bode图就是bode(tf(num,den))就能解决,但是有些传递函数并不是线性的,比如带有延时之类,Bode函数对于这类问题就无能为力
给定系统传递函数
w=logspace(-2,4,1000);
G=(1-exp(-i*w)).^(2).*(i*w+1)./(-w.^2);
margin=abs(G);
phase=angle(G)*180/pi;
figure(1);
hold on;
subplot(2,1,1);
semilogx(w,20*log10(margin),'k');
title('幅频图')
subplot(2,1,2);
semilogx(w,phase,'r')
title('相频图')
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