From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

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+//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")
-- 
cgit