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Message ID: 3723     Entry time: Thu Oct 14 20:49:50 2010
Author: yuta 
Type: Update 
Category: Computers 
Subject: automated Q-value adjuster 

 Now we can use pyNDS(see elog #3722), so I wrote a python script that adjusts Q-value automatically.

What I did:
1. Wrote a python script. /cvs/cds/caltech/users/yuta/scripts/QAdjuster.py

2. Ran this script for every DOF, every MC suspension.

 Following lines and attached are example output when I ran QAdjuster.py for MC3 POS.

Currently, C1:SUS-MC3_SUSPOS_GAIN is 5

Connecting.... authenticate failed: Unspecified error
Connecting.... done
Current GPS time is 971149410


Waiting for the ringdown...... 0\

Current GPS time is 971149431

omega_0= 6.326764,
Q= 11.254252,
A= -53.491850,
delta= 5.007821,
ofset= 4349.808434

Q-value was 11.3
Set C1:SUS-MC3_SUSPOS_GAIN = 10.2311380794

 Current Q-values automatically set are as follows.

  MC1 MC2 MC3
POS 4.9 4.8 5.9
PIT 6.8 5.5 4.5
YAW 6.4 5.6 5.3
SIDE 5.8 5.2 5.0

Next work:
 - Modify the script so that it adjusts all the channels automatically. Now, it is one by one, trial by trial.
 - Modify the script so that it automatically turns the offset switch on. Now, it must be turned on beforehand.
 - Write a how-to

Attachment 1: MC3_SUSPOS.png  129 kB  Uploaded Thu Oct 14 21:55:48 2010  | Hide | Hide all
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