Finding the ramp response to a transfer function

If T is the transfer function defined below, how do you find the ramp response?

G = tf(poly([-2 -3]),poly([0 -1])); T=feedback(G,1)

Answer 1

[Mathieu NOE]

You can use lsim function for any input

t=0:0.01:10
slope = 2;
ramp=slope*t;         % Your input signal
G = tf(poly([-2 -3]),poly([0 -1])); T=feedback(G,1);    % Your transfer function
[y,t]=lsim(G,ramp,t);
plot(t,y)

[Aleem Andrew]

Thank you for your answer. Can you use lsim for a step input? I get an error message when I do so.

t=0:0.01:10;
slope = 2;
ramp=1;         % Your input signal
G = tf(poly([-2 -3]),poly([0 -1])); T=feedback(G,1);    % Your transfer function
[y,t]=lsim(G,ramp,t);
plot(t,y)

[Mathieu NOE]

hello

sure, but whatever the type of input signal, its dimensions must be the same as time vector (t)

I also changed the name of the input to avoid any confusion (it's not a ramp anymore)

so this is the correct code :

t=0:0.01:10;
mystep=1*ones(size(t));         % Your input signal
G = tf(poly([-2 -3]),poly([0 -1])); T=feedback(G,1);    % Your transfer function
[y,t]=lsim(G,mystep,t);
plot(t,y)