When using the transfer function bellow with lsim i get wrong results
3.249e08 s^2
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6.365e07 s^4 + 9.476e07 s^3 + 3.484e08 s^2 + 324615 s + 1596
The first image is what I expected (what I get from teh step functions) and the second one is what I get from lsim.
This is the code I used:
T = 50;t = linspace(0, T, 1000);u = ones(size(t));Gs = tf([0,54150000,17043000,324615,1596],[63650000,94760000,348383000,324615,1596]);lsim(Gs, u, t);figure;step(Gs);
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