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From: Davide Sanseverinati on 22 Jun 2010 04:47
Hi

i have this transfer function G(j*omg) and i need to evaluate the sensitivity function S of it with respect to certain parameters theta_i :

S(omg)= abs ( d|G(j*omg)| / dtheta_i )

How can i differentiate my transfer function with respect to parameters?

Thanks


Davide
From: Alan Weiss on 22 Jun 2010 08:18
On 6/22/2010 4:47 AM, Davide Sanseverinati wrote:
> Hi
>
> i have this transfer function G(j*omg) and i need to evaluate the
> sensitivity function S of it with respect to certain parameters theta_i :
>
> S(omg)= abs ( d|G(j*omg)| / dtheta_i )
>
> How can i differentiate my transfer function with respect to parameters?
>
> Thanks
>
> Davide

If you have Symbolic Math Toolbox, use the diff or jacobian commands.
If you do not have Symbolic Math Toolbox, take finite differences
numerically.

Alan Weiss
MATLAB mathematical toolbox documentation
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