DV05 Fast Switching Issues and Tracking


TIP Last Update: JeffMangum - 18 October 2009

Test Matrix Progress Tracking

Note: All entries assume measurements at P=0, 90, and 225. Notes regarding servo tuning during these measurements:

  • Before 2009-10-13:
    • Performance poor when "going against the sidereal grain" at elevation 60 degrees.
    • FS gain parameter set from 0.38 to 0.40.
    • No real improvement in FS performance.
  • 2009-10-17:
    • New servo tuning (several parameters set to new values).
    • New ACU software version 1.4.4 used.
    • FS performance marginally better.

(todo - todo done - done )

 +
State Item Comment  
(Az,El) = (0,30) Attempted 2009-10-07
Completed 2009-10-21
  +  
(Az,El) = (0,45) Attempted 2009-10-07
Completed 2009-10-23
  +  
(Az,El) = (0,60) Attempted 2009-10-11. Some failures at P0 and P225.
Completed 2009-10-17 (new servo tuning)
  +  
(Az,El) = (60,30) Attempted 2009-10-11. Some failures at P90 and P225.
Completed 2009-10-20, but P225 measurement had only 15 measurements. Need to redo.
Completed 2009-10-24
  +  
(Az,El) = (60,45) Completed 2009-10-17 (new servo tuning).   +  
(Az,El) = (60,60) Attempted 2009-10-02.
Repeated 2009-10-08.
Completed 2009-10-17 (new servo tuning).
  +  
(Az,El) = (120,30) Completed 2009-10-20   +  
(Az,El) = (120,45) Completed 2009-10-24   +  
(Az,El) = (120,60) Attempted 2009-10-02.
Repeated 2009-10-11 with new metrology correction code. Made performance worse overall.
Completed 2009-10-17 (new servo tuning)
  +  
(Az,El) = (180,30) Attempted 2009-10-09
Completed 2009-10-21
  +  
(Az,El) = (180,45) Attempted 2009-10-08
Completed 2009-10-21
  +  
(Az,El) = (180,60) Attempted 2009-10-09 (failed)
Attempted 2009-10-13 (fs gain = 0.4; still some failures)
Completed 2009-10-16 (new servo tuning)
  +  
(Az,El) = (240,30) Completed 2009-10-21   +  
(Az,El) = (240,45) Completed 2009-10-17 (new servo tuning)   +  
(Az,El) = (240,60) Attempted 2009-10-07 (failed)
Completed 2009-10-16 (new servo tuning)
Completed (again) 2009-10-17.
  +  
(Az,El) = (300,30) Completed 2009-10-21   +  
(Az,El) = (300,45) Attempted 2009-10-08
Completed 2009-10-23
  +  
(Az,El) = (300,60) Attempted 2009-10-07 (failed)
Repeated 2009-10-08 (pass, but not sidereal tracking, so cannot call this a pass)
Attempted 2009-10-13 (fs gain = 0.4; still some failures)
Completed 2009-10-16 (new servo tuning)
  +  
(Az,El) = (0,55) Added to characterize high-El performance.
Completed 2009-10-24
  +  
(Az,El) = (60,55) Added to characterize high-El performance.
Completed 2009-10-20
  +  
(Az,El) = (120,55) Added to characterize high-El performance.
Completed 2009-10-24
  +  
(Az,El) = (180,55) Added to characterize high-El performance.
Completed 2009-10-21
  +  
(Az,El) = (240,55) Added to characterize high-El performance.
Completed 2009-10-21
  +  
(Az,El) = (300,55) Added to characterize high-El performance.
Completed 2009-10-23
  
  

-- JeffMangum - 2009-10-08
Topic revision: r14 - 2009-10-24, JeffMangum
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