R&D (FilterCavity)
AyakaShoda - 12:55, Friday 06 December 2019 (1914)
PR Pitch local control updated

I updated the control filter for the PR PIT.

The old filter is in ASC2G and notches.

The new filter works with the filters, test and boost2, with the gain of 1.0. The residual decreases more than 10 times wink

Images attached to this report
1914_20191206045502_speprp191206.png
Comments related to this report
AyakaShoda - 22:24, Tuesday 10 December 2019 (1928)

Attached is the designed OLTF of the previous and the new servoes on Dec 6th.

The phase mergin is about 40 deg. The difference of gain at above the UGF is about 10 dB.

Also, I have tried to look up the time the PR was resonating (at around 6/12/2019 6:00 UTC), but I could not find any DAQ signal for PR local damping loop.
Why don't we add some (if the storage allows)?