Plot transfer function with input

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Kaizi 2023-4-5

评论： Sam Chak 2023-4-5

Hello there.

I have a transfer function of OP AMP:

And how do I plot step(g) with input Vi(t) = 3V ?I have no idea how to

Thanks.

Sam Chak 2023-4-5

编辑：Sam Chak 2023-4-5

Here are two simplest ways to do it:

Method 1:

Vi = 3; % input

G = tf([1.8 2.4 0], [0.72 1.8 1])

G = 1.8 s^2 + 2.4 s -------------------- 0.72 s^2 + 1.8 s + 1 Continuous-time transfer function.

step(Vi*G)

Method 2:

t = linspace(0, 7, 701); % sim time

u = Vi*ones(1, length(t)); % input

lsim(G, u, t)

Kaizi 2023-4-5

thanks you

Sam Chak 2023-4-5

Hi @Kaizi, don't forget to accept thw Answer. 🙏

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