1 files changed, 19 insertions, 0 deletions
diff --git a/257/CH11/EX11.12/ex_11_12.sce b/257/CH11/EX11.12/ex_11_12.sce
new file mode 100644
index 000000000..078c2ebdd
--- /dev/null
+++ b/257/CH11/EX11.12/ex_11_12.sce
@@ -0,0 +1,19 @@
+s=poly(0,'s'); 
+F=syslin('c',[(1+0.5*s)/((1+2*s)*s*(1+0.05*s+0.125*s^2))]) 
+
+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
+
+[GainMargin,freqGM]=g_margin(F) //Calculates gain margin [dB] and corresponding frequency [Hz]
+disp(GainMargin,"GM=")
+disp(freqGM*2*(%pi),"omegaPC=")
+
+[PhaseMargin,freqPM]=p_margin(F) //Calculates phase [deg] and corresponding freq [Hz] of phase margin
+disp(PhaseMargin,"PM=")
+disp(freqPM*2*(%pi),"omegaGC")
+
+show_margins(F) //display gain and phase margin and associated crossover frequencies
+