Brother TC-225 / TC-229 adventure!

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28 Aug 2017 20:37 #98114 by PCW
Yow!
Take it easy

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29 Aug 2017 00:50 #98118 by ihavenofish
8ipm jog same pod settings as before
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29 Aug 2017 02:02 #98120 by PCW
Still not clear where the HF noise is coming from

Can you try the same with D=0 (You really should not need D in velocity mode)

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29 Aug 2017 02:07 #98121 by ihavenofish
No d is similar looking. I'll do a plot in a bit.

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29 Aug 2017 02:26 #98122 by ihavenofish
D 0

I'm looking at a out and I see it is almost exactly as f error. This seems odd to me
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29 Aug 2017 02:38 #98123 by Todd Zuercher
What were your PID, FF1. FF2, and Deadband settings for the above 2 plots?

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29 Aug 2017 02:50 #98125 by ihavenofish
Look back a few posts.

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29 Aug 2017 03:17 #98127 by Todd Zuercher
I went back through 5 pages and didn't see it.

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29 Aug 2017 03:22 #98128 by ihavenofish
Doh it's in one of the screen grabs.

P 150
I .02
D .2

Ff0 0
Ff1 .87
Ff2 .00105

Bias 0
Dead band. 00001

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29 Aug 2017 03:48 #98129 by Todd Zuercher
I think I would try reducing P to about 100 and setting I and D to 0. See if that gets a mostly smooth velocity plot. Then fine tune FF1 and FF2 to minimize the following error. Once there, then you should be able to add back some more P to try to stiffen things up.

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