diff options
| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /257/CH11/EX11.9/example_11_9.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '257/CH11/EX11.9/example_11_9.sce')
| -rw-r--r-- | 257/CH11/EX11.9/example_11_9.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/257/CH11/EX11.9/example_11_9.sce b/257/CH11/EX11.9/example_11_9.sce new file mode 100644 index 000000000..66e94c233 --- /dev/null +++ b/257/CH11/EX11.9/example_11_9.sce @@ -0,0 +1,24 @@ +s=poly(0,'s');
+F=syslin('c',[(s^2)/((1+0.2*s)*(0.02*s+1))]) //without k
+
+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*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")
+
+show_margins(F) //display gain and phase margin and associated crossover frequencies
+
+// TO FIND VALUE OF K
+
+// at omega=5, the point on the plot without k 28dB away from 0dB line.
+k1=10^(-28/20) // 20*log(k1)=-28
+disp(k1,"k for omegaGC=5 is ")
|