MATLAB >> Dirac delta function

by Francisco P. » Tue, 05 Dec 2006 09:02:23 GMT

excuse me anybody knows how can I generate the Dirac Delta function
in Simulink? somebody told me that I should use the step function and
a derivate, the problem it's that I have to made it with simulink,
but I don't know how, I hope you could help me.

MATLAB >> dirac delta function

by checkmate » Wed, 22 Oct 2008 17:12:14 GMT

I have looked into dirac function. However, from the documentation, it
looks like the parameters have to be a syms type. I'm trying to
substitute an expression into the parameter such that I can obtain a
plot of perhaps a few delta functions. What would be the easiest, most
effective way to accomplish this (an example would be fantastic)?
Thanks in advance.

MATLAB >> dirac delta function

by Rune Allnor » Wed, 22 Oct 2008 17:32:45 GMT

Correct. That's because Dirac's Delta is a symbolic
function and has no numerical representation.

Have you ever seen an exact plot of a Dirac Delta?
If 'no', can you think of any reason why?


MATLAB >> dirac delta function

by BHUPALA » Wed, 22 Oct 2008 23:49:23 GMT

In reality there is no plot for Dirac delta as it is a distribution
and not a function as such. The plots which you try to plot in matlab
are all Kronecker delta and not Dirac deltas.


MATLAB >> dirac delta function

by checkmate » Thu, 23 Oct 2008 01:30:39 GMT

Thank you all for your replies. I guess I could try to just plot
kronecker delta functions and then modify them by hand later. I am
having trouble finding how to plot kronecker delta functions on the
Matlab documents. Does it only involve making the value equal to the
amplitude when the parameter in the delta function equal to zero?

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