[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
System identification...
|
From: |
Rudolf Widmer-Schnidrig |
|
Subject: |
System identification... |
|
Date: |
Wed, 19 Jan 2011 09:19:11 +0100 |
|
User-agent: |
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101207 Lightning/1.0b2 Thunderbird/3.1.7 |
Dear List,
I have measured (in the time domain) input and output of a mechanical
system (a seismometer) and would like to derive a filter model B(s)/A(S)
based on this data.
I see the path via the frequency domain:
[H, F] = pwelch(input,output,.....'trans')
[B, A] = invfreqs(H,F,nA,nB)
Question: is there a way to find A and B without going first into the
Fourier domain?
many cheers - Ruedi
--
+---------------------------------------------------------------+
Rudolf Widmer-Schnidrig
Black Forest Observatory (BFO)
Heubach 206
D-77709 Wolfach, Germany
e-mail: address@hidden
phone: +49 7836 2151
fax: +49 7836 955240
48d 19' 48.24" North 8d 19' 23.13" East
+---------------------------------------------------------------+
- System identification...,
Rudolf Widmer-Schnidrig <=