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How to plot result of inverse laplace transformation ?

Asked by john on 10 Jul 2013
Latest activity Answered by Vipin Sharma on 3 Sep 2014

Hi,

how can I plot result of inverse Laplace transformation?

Example:

b=(s^2-2*s+4);
c=ilaplace(b)
t=0:10;

Than I get:

c = 4*dirac(t) - 2*dirac(t, 1) + dirac(t, 2)

but how can I plot result of ilaplace for t=0:10?

I know about

ezplot(matlabFunction(h), [1,1000]) 

but it doesn't work.

Thank you for help

No ideas?

3 Comments

john on 18 Jul 2013

Can anybody help me? please

nl2605 on 19 Jul 2013

Hey..

When you say you want to plot the inverse laplace transform don't you actually mean the impulse response of the system? Because then you might as well plot the impulse response using impulseplot function. But then you also need to define the system. Just asking because I am working on a similar topic.

john on 22 Jul 2013

Hi, I want just plot my above example for any time interval...I hope it is answer for your question. :-). But I dont know how.

john

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1 Answer

Answer by Vipin Sharma on 3 Sep 2014

Inverse laplace transform plot of a transfer function, F, is equal to impulse response of the transfer function, F. You could simply do, impulseplot(F). Note that F is 'tf' type and 'sym' type.

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Vipin Sharma

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