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  Fri Aug 7 16:00:17 2009, pete, Update, Computers, RCG work. MDC MDP open loop transfer function tf_au_natural.pdf
    Reply  Sun Aug 9 16:32:18 2009, rana, Update, Computers, RCG work. MDC MDP open loop transfer function a.png
Message ID: 1870     Entry time: Sun Aug 9 16:32:18 2009     In reply to: 1856
Author: rana 
Type: Update 
Category: Computers 
Subject: RCG work. MDC MDP open loop transfer function 

This is very nice. We have, for the first time, a real time plant with which we can test our changes of the control system. From my understanding, we have a control system with the usual POS/PIT/YAW matrices and filter banks. The outputs go to a separate real-time system which is running something similar and where we have loaded the pendulum TF as a filter. Cross-couplings, AA & AI filters, and saturations to come later.

The attached plot is just the same as what Peter posted earlier, but with more resolution. I drove at the input to the SUSPOS filter bank and measured the open loop with the loop closed. The loop wants an overall gain of -0.003 or so to be stable.

Attachment 1: a.png  56 kB  | Hide | Hide all
ELOG V3.1.3-