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+//Example 6.3

+//Bode Plot for Real Poles and Zeros.

+

+xdel(winsid())//close all graphics Windows

+clear;

+clc;

+//------------------------------------------------------------------

+//System transfer function and its bode plot

+K=2000;

+s=poly(0,'s');

+Gs=syslin('c',(K*(s+0.5))/(s*(s+10)*(s+50)));

+

+//The bode plot of the system

+wmin=0.1;         // mininmum frq. in rad/sec for response

+wmax=100;         // maximum frq. in red/sec for response

+fmin=wmin/2/%pi   // mininmum frq. in Hz for response

+fmax=wmax/2/%pi   // maximum frq. in Hz for response

+//------------------------------------------------------------------

+//Bode plot for frequency in Hz (scilab ver. 5.4.1)

+//bode(g,fmin,fmax) 

+//OR 

+//(Only for scilab ver. 5.5.1)

+//Bode (frequency scale in rad/sec)

+// or gainplot or phaseplot plot with asymptotes

+figure(0)

+gainplot(Gs,fmin,fmax);

+bode_asymp(Gs,wmin,wmax);

+xstring(0.03,22,"slope=-1(-20db/dec)",0,0);

+xstring(0.2,9,"slope=0",0,0);

+xstring(3,7,"slope=-1(-20db/dec)",0,0)

+xstring(0.9,-8,"slope=-2(-40db/dec)",0,0)

+title('Composit plots (a) magnitude plot','fontsize',3);

+h=legend('');

+exec .\fig_settings.sci; //custom script for setting figure properties

+h.visible = "off"

+//------------------------------------------------------------------

+

+//phase plot for poles and zeros

+zr=((s/0.5)+1)/s //infact this is zero and pole at origin. 

+zr=syslin('c', zr);

+pl1=1/((s/10)+1) 

+pl1=syslin('c', pl1);

+pl2=1/((s/50)+1) 

+pl2=syslin('c', pl2);

+figure(1)

+phaseplot([Gs;zr;pl1;pl2],fmin,fmax);

+xstring(5.5,-14,"$\frac {1}{s/0.5+1}$",0,0);

+xstring(2.8,-22,"$\frac{1}{s/50+1}$",0,0);

+xstring(2.5,-60,"$\frac{1}{s/10+1}$",0,0); 

+xstring(1.2,-100,["Composite";"(Actual)"],0,0);

+title('Composit plots (b) Phase','fontsize',3);

+exec .\fig_settings.sci; //custom script for setting figure properties

+

+//------------------------------------------------------------------

+figure(2)

+bode(Gs,fmin,fmax,"rad"); //frequency scale n radians

+bode_asymp(Gs,wmin,wmax);

+exec .\fig_settings.sci; //custom script for setting figure properties

+title('(c) magnitude plot and phase plot approximate and actual...

+','fontsize',3)

+xstring(2.8,-22,"$\frac{1}{s/50+1}$",0,0);

+h=legend('');

+h.visible = "off"

+

+//------------------------------------------------------------------

diff --git a/3432/CH6/EX6.3/Ex6_3_f0.pdf b/3432/CH6/EX6.3/Ex6_3_f0.pdf
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diff --git a/3432/CH6/EX6.3/Ex6_3_f1.pdf b/3432/CH6/EX6.3/Ex6_3_f1.pdf
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+++ b/3432/CH6/EX6.3/Ex6_3_f1.pdf