40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Tue Mar 11 23:14:01 2008, rana, Configuration, PEM, Accelerometer and Seismometer movements Acc.pdf
    Reply  Wed Mar 12 00:36:52 2008, rana, Configuration, PEM, Accelerometer and Seismometer movements finished.pdf
       Reply  Wed Mar 12 00:40:35 2008, rana, Configuration, PEM, Accelerometer and Seismometer movements mc2048-128.pdf
          Reply  Wed Mar 12 00:47:26 2008, rana, Configuration, PEM, Accelerometer and Seismometer movements Screenshot.png
          Reply  Mon Mar 17 18:30:48 2008, mevans, Configuration, PEM, Adaptive Filtering mcacc_adaptive.png
Message ID: 369     Entry time: Wed Mar 12 00:36:52 2008     In reply to: 368     Reply to this: 370
Author: rana 
Type: Configuration 
Category: PEM 
Subject: Accelerometer and Seismometer movements 
I used the MISO FIR Wiener matlab code to see how well we might do in principle.

The attached 3 page PDF file shows the MC_L control signal (force on MC2) and the residual
after subtracting off the accelerometer and seismometer using a 32 Hz sample rate and
512 taps (page 1), 1024 taps (page 2), and 2048 taps (page 3). As Matt smarmily points out,
there's not a lot to win by going beyond 512; maybe a factor of sqrt(2) for a factor of 4
tap number.
Attachment 1: finished.pdf  111 kB  | Hide | Hide all
finished.pdf finished.pdf finished.pdf
ELOG V3.1.3-