how to show this

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Ahmad Ali on 12 Jun 2021
Commented: Rena Berman on 29 Jun 2021 at 14:28
if the
1
G(s) = --------------------------------------------------------------
s^6 + 4 s^5 + 3 s^4 + 3.553e-15 s^3 + s^2 + 3 s
how to make in matlab
1
G(s) = ---------------------------------------------------------------
s^6 + 4 s^5 + 3 s^4 + s^2 + 3 s
Rena Berman on 29 Jun 2021 at 14:28

Sulaymon Eshkabilov on 12 Jun 2021
It is quite simple and straightforward:
G = tf(1, [1 4 3 0 1 3 0])

Walter Roberson on 13 Jun 2021
G = tf([1], [1, 4, 3, 3.553e-15, 1, 1, 0])
G = 1 --------------------------------------------- s^6 + 4 s^5 + 3 s^4 + 3.553e-15 s^3 + s^2 + s Continuous-time transfer function.
N = cellfun(@discardsmall, G.Numer, 'uniform', 0);
D = cellfun(@discardsmall, G.Denom, 'uniform', 0);
G = tf(N, D, 'IODelay', G.IODelay)
G = 1 ----------------------------- s^6 + 4 s^5 + 3 s^4 + s^2 + s Continuous-time transfer function.
V(abs(V)<1e-10) = 0;
end
Using a function as a helper is the easiest way because for the general case we cannot assume that the input transfer function does not have an array of transfers. G.Numer and G.Denom are cell arrays of vectors, not plain vectors.