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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /29/CH7/EX7.19.2/exa7_19_2.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '29/CH7/EX7.19.2/exa7_19_2.sce')
| -rwxr-xr-x | 29/CH7/EX7.19.2/exa7_19_2.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/29/CH7/EX7.19.2/exa7_19_2.sce b/29/CH7/EX7.19.2/exa7_19_2.sce new file mode 100755 index 000000000..1a4afa9ce --- /dev/null +++ b/29/CH7/EX7.19.2/exa7_19_2.sce @@ -0,0 +1,18 @@ +//caption:gain_margin_and_phase_margin
+//example 7.19.2
+//page 282
+s=%s;
+g=((2*(s+0.25))/(s^2*(s+1)*(s+0.5)));
+G=syslin('c',g)
+fmin=0.1;
+fmax=100;
+bode(G, fmin, fmax)
+[gm,freqGM]=g_margin(G);
+[pm,freqPM]=p_margin(G);
+show_margins(G);
+disp(gm,"gain_margin=");
+disp((freqGM*2*%pi),"gain_margin_freq=");
+disp(pm,"phase_margin=");
+disp((freqPM*2*%pi),"phase_margin_freq=");
+show_margins(G);
+disp("since gain and phase margin are both negative so system is unstable")
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