Jul 14, 2010 #1 moonnightingale Full Member level 6 Joined Sep 17, 2009 Messages 362 Helped 5 Reputation 10 Reaction score 5 Trophy points 1,298 Activity points 3,832 For term like exp(-1.5 s) x 3/(s^2+4s+3) We can take the Ztransform or discrete form by this code clc Td=1.5; T=1; num=[0 0 3]; den=[1 4 3]; Gs=tf(num,den,'InputDelay',Td) Gz=c2d(Gs,T) [numz,denz]=tfdata(Gz); [A,B,C,D]=tf2ss(numz{1},denz{1}) But when i am having exp(1.5 s) x 3/(s^2+4s+3) (( negative sign not there how to calculate)) s is Laplace Domain Thanks
For term like exp(-1.5 s) x 3/(s^2+4s+3) We can take the Ztransform or discrete form by this code clc Td=1.5; T=1; num=[0 0 3]; den=[1 4 3]; Gs=tf(num,den,'InputDelay',Td) Gz=c2d(Gs,T) [numz,denz]=tfdata(Gz); [A,B,C,D]=tf2ss(numz{1},denz{1}) But when i am having exp(1.5 s) x 3/(s^2+4s+3) (( negative sign not there how to calculate)) s is Laplace Domain Thanks