How to plot result of inverse laplace transformation ?

Question

john 2013-7-10

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https://ww2.mathworks.cn/matlabcentral/answers/81693-how-to-plot-result-of-inverse-laplace-transformation

回答： Arabella Bowers 2016-1-17

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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?

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nl2605 2013-7-19

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 2013-7-22

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.

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Answer 1

Vipin Sharma 2014-9-3

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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.