Hi all,
I want to get frequency of my model from system identification tool box. Can anyone give me an idea?

"Nimmi Dissanayake" <nimmdis@yahoo.com> wrote in message <hrnu8t$clj$1@fred.mathworks.com>...
> Hi all,
> I want to get frequency of my model from system identification tool box. Can anyone give me an idea?

Hello Nimmi,

A good reference on "Extracting Parameter Values from Linear Models" using the System Identification Toolbox from the MathWorks online documentation is:
 http://www.mathworks.com/access/helpdesk/help/toolbox/ident/ug/bq5iql4-1.html

In particular...

http://www.mathworks.com/access/helpdesk/help/toolbox/ident/ref/freqresp.html

....this describes how the 'freqresp' function from the System Identification Toolbox
returns Frequency response data from linear models.

I have replicated some info. from the link for your convenience:
H = freqresp(m) returns the frequency response H of the model m at default frequencies determined from the dynamics of the model. For idmodel models, computes the frequency response of the model. For idfrd models, extracts the frequency data from the model object. If m contains nonzero delays (stored as m.InputDelay), these delays are absorbed into the returned frequency response.

I hope I helped you a little.

Cheers,

Bruce