ELOG - OAF Feedaround ON and doing something good

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Sun Dec 20 21:39:40 2009, rana, jenne, kiwamu, Update, ASS, OAF Model update and build instructions

Mon Dec 21 02:22:31 2009, rana, jenne, kiwamu, Update, ASS, OAF Model update and build instructions

Mon Dec 21 19:24:29 2009, rana, Update, ASS, OAF Model update and build instructions

Tue Dec 22 02:50:09 2009, rana, kiwamu, jenne, Update, ASS, OAF Feedaround ON and doing something good

Wed Dec 23 17:33:14 2009, rana, Update, ASS, OAF Feedaround ON and doing something good

Mon Dec 21 07:30:58 2009, ???, Update, ASS, OAF Model update and build instructions

Mon Dec 21 10:09:06 2009, jenne, Update, ASS, OAF Model update and build instructions

Message ID: 2442 Entry time: Tue Dec 22 02:50:09 2009 In reply to: 2441 Reply to this: 2449

Author:	rana, kiwamu, jenne
Type:	Update
Category:	ASS
Subject:	OAF Feedaround ON and doing something good

Kiwamu made the OAF screen functional today - screenshot attached.

After this, I used the measured TF of the MC1 to MCL to filter the signals from the Wilcoxon accelerometers and feed them into the MC.

The noise at 3 Hz went down by a factor of ~3. There's a little excess created at 100 Hz. Its good to see that our intuition about feed-forward is OK.

I did all of the filter calculations by adapting the scripts that Haixing, Valera, and I got going at LLO. They're all in the mDV/extra/C1 SVN.

The Wiener code predicts much better performance from using more than just 2 horizontal accelerometers, but I was too lazy to do more channels today.

I also added the Rai box to the Ranger readout today - the noise at 0.1 Hz went down by a factor of 10 and the noise at 1 Hz is close to 10^-11 m/rHz.

Attachment 1:

oaf.png 24 kB | Hide | Hide all

Attachment 2:

oaf.png 63 kB | Hide | Hide all

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