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Bug #24884

Labview gain limits

Added by Brian Chase about 2 months ago. Updated about 2 months ago.

Status:
New
Priority:
Normal
Assignee:
Philip Varghese
Start date:
08/28/2020
Due date:
% Done:

0%

Estimated time:
Spent time:
4.00 h
Duration:

Description

Labview is limiting the Pgain to 1000 and the Igain to 6E6. Where are the limits at? They should be three times present values if the firmware will take them.

Feedback_Gain_Range.docx (41.1 KB) Feedback_Gain_Range.docx Philip Varghese, 09/01/2020 06:22 PM

History

#1 Updated by Philip Varghese about 2 months ago

Firmware was modified to allow a maximum proportional gain of +/-8191 which can be limited further
in the spreadsheet. All PIP-II cavities can be set to +/- 4095 as the maximum in the spreadsheet.
A table of maximum gain(45 degree phase margin) for all PIP-II cavities is attached for reference.
The spreadsheet change and firmware change was tested and an additional change in the front end call back function
was identified to be necessary. Testing will be repeated after this change.

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