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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/EX7.17.7 | |
| 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/EX7.17.7')
| -rwxr-xr-x | 29/CH7/EX7.17.7/exa7_17_7.jpg | bin | 0 -> 25327 bytes | |||
| -rwxr-xr-x | 29/CH7/EX7.17.7/exa7_17_7.sce | 14 |
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diff --git a/29/CH7/EX7.17.7/exa7_17_7.jpg b/29/CH7/EX7.17.7/exa7_17_7.jpg Binary files differnew file mode 100755 index 000000000..b2eccce6c --- /dev/null +++ b/29/CH7/EX7.17.7/exa7_17_7.jpg diff --git a/29/CH7/EX7.17.7/exa7_17_7.sce b/29/CH7/EX7.17.7/exa7_17_7.sce new file mode 100755 index 000000000..7e96fc75e --- /dev/null +++ b/29/CH7/EX7.17.7/exa7_17_7.sce @@ -0,0 +1,14 @@ +//caption:stability_using_Nyquist_criterion +//example 7.17.7 +//page 244 +clf(); +s=%s; +s1=-s; +g=(2.2/(s*(s+1)*(s^2+2*s+2))) +g1=(2.2/(s1*(s1+1)*(s1^2+2*s1+2))) +GH=syslin('c',g); +GH1=syslin('c',g1); +nyquist(GH); +nyquist(GH1); +mtlb_axis([-2.5 0.2 -75 75]); +disp("as the nyquist plot passes through the point -1+%i*0, so system is marginally stable and output represents sustained oscillations.")
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