# ex9_14 - xlabel('Time (sec)') ylabel('y(t)') title('Second...

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% Example 9.14 % second order response % varying zeta, wn is constant t = 0:.05:10; wn = 2; zeta = .5; k = 4; num = k; den = [1 2*zeta*wn wn^2]; y1 = step(num,den,t); zeta = 1; num = k; den = [1 2*zeta*wn wn^2]; y2 = step(num,den,t); zeta = 1.5; num = k; den = [1 2*zeta*wn wn^2]; y3 = step(num,den,t); plot(t,y1,'-',t,y2,'--',t,y3,'-.');
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Unformatted text preview: xlabel('Time (sec)') ylabel('y(t)') title('Second order step response') % the following inserts a legend hold on plot([5 6],[.5 .5],[5 6],[.4 .4],'--',[5 6],[.3 .3],'-.') text(6.5,.5,'zeta = 0.5') text(6.5,.4,'zeta = 1') text(6.5,.3,'zeta = 1.5') hold off...
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## This note was uploaded on 03/24/2010 for the course CENG 4331 taught by Professor Maryrandolph-gips during the Fall '09 term at UH Clear Lake.

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