how find ramp response

manoj saini (view profile)

on 15 Feb 2013
Latest activity Commented on by Louis Lee

Louis Lee (view profile)

on 9 Oct 2017
what is method to find out ramp response of a transfer system.......... there is any command like step or impulse?

Azzi Abdelmalek (view profile)

on 15 Feb 2013
Edited by Azzi Abdelmalek

Azzi Abdelmalek (view profile)

on 15 Feb 2013

You can use lsim function for any input
t=0:0.1:10
alpha=2
model=tf(1,[1 20 3]); % Your transfer function
[y,t]=lsim(model,ramp,t)
plot(t,y)

Teja Muppirala (view profile)

on 15 Feb 2013

You could get the ramp response by dividing your transfer function by s, and then taking the step response.
For example:
s = tf('s');
G = 1/(s+1);
figure
subplot(311), impulse(G); % Impulse reponse
subplot(312), step(G); % Step Response
subplot(313), step(G / s); % Ramp response

Azzi Abdelmalek

Azzi Abdelmalek (view profile)

on 15 Feb 2013
% or more general:
out=impulse(G*U) % G your transfer function
% U the Laplace transform of your input signal
Louis Lee

Louis Lee (view profile)

on 9 Oct 2017
And then do some manual convolution