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Entry  Wed Sep 9 11:00:49 2015, Ignacio, Update, IOO, Last Wiener MCL subtractions 11x
    Reply  Sun Sep 13 13:26:00 2015, rana, Update, IOO, Last Wiener MCL subtractions 
    Reply  Mon Oct 26 18:10:38 2015, Ignacio, Update, IOO, Last Wiener MCL subtractions code_TF.zip
Message ID: 11584     Entry time: Wed Sep 9 11:00:49 2015     Reply to this: 11592   11713
Author: Ignacio 
Type: Update 
Category: IOO 
Subject: Last Wiener MCL subtractions 

On Thursday night (sorry for the late elog) I decided to give the MCL FF one more try. 

I first remeasured the actuator transfer function because previous measurements had poor coherence ~0.5 - 0.7  at 3 Hz. I did a sine swept to measure the TF. 

Raw transfer function:

The data is attached here: TF.zip

Then I made Wiener filters by fitting the transfer function data with coherence > 0.95 (on the left). Fitting all the data (on the right). Here are the filters:


The offline subtractions (high coh fit on left, all data fit on right). Notice the better IIR performance when all the TF data was fitted.


The online results: (these were aquired by taking five DTT measurements with 15 averages each and then taking the mean of these measurements)


And the subtraction performance:


Attachment 3: TF.zip  9 kB
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