?? exb3.m
字號:
num = 100;
den = [1 26 216 576];
[numo, deno, denc]=frdesign(num, den); %PID design
w = .1:.1:20;
[mag, phase] =bode(numo, deno, w);
dB = 20*log10(mag);
figure(1), plot(w, dB), grid
xlabel('w, rad/sec'), ylabel('dB')
figure(2), plot(w, phase), grid
xlabel('w, rad/sec'), ylabel('Degrees')
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