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diff --git a/3885/CH4/EX4.3/Ex4_3.sce b/3885/CH4/EX4.3/Ex4_3.sce new file mode 100644 index 000000000..cabb1b9ee --- /dev/null +++ b/3885/CH4/EX4.3/Ex4_3.sce @@ -0,0 +1,18 @@ +//control systems by Nagoor Kani A
+//Edition 3
+//Year of publication 2015
+//Scilab version 6.0.0
+//operating systems windows 10
+// Example 4.3
+clc;
+clear;
+s=poly(0,'s')//defines s as poly nomial variable
+h=syslin('c',(%e*(0.2*s)/(s*(s+2)*(s+8))))//the given transfer function assiganed to variable h assume K=1
+scf(1)
+bode(h,0.1,100)//frequency range
+show_margins(h)
+//calculation of K
+K1=10^(30/20)
+disp(K1 ,'when gain margin =2db ' )
+K2=10^(24/20)
+disp(K2,'the value of K when phase margin is 45')
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