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Diffstat (limited to '257/CH11/EX11.4')
| -rw-r--r-- | 257/CH11/EX11.4/example_11_4.sce | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/257/CH11/EX11.4/example_11_4.sce b/257/CH11/EX11.4/example_11_4.sce new file mode 100644 index 000000000..11a67a367 --- /dev/null +++ b/257/CH11/EX11.4/example_11_4.sce @@ -0,0 +1,15 @@ +s=poly(0,'s');
+F=syslin('c',[242*(s+5)/((1+s)*s*(s^2+5*s+121))])
+fmin=0.1; //Min freq in Hz
+fmax=20; //Max freq in Hz
+scf(1);clf;
+bode(F,fmin,fmax); //Plots frequency response of open-loop system in Bode diagram
+show_margins(F) //display gain and phase margin and associated crossover frequencies
+
+[GainMargin,freqGM]=g_margin(F) //Calculates gain margin [dB] and corresponding frequency [Hz]
+disp(GainMargin,"GM=")
+disp(freqGM*2*3.14,"omegaPC=")
+
+[PhaseMargin,freqPM]=p_margin(F) //Calculates phase [deg] and corresponding freq [Hz] of phase margin
+disp(PhaseMargin,"PM=")
+disp(freqPM*2*3.14,"omegaGC")
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