Servo Wiring and Tuning detailed How To example Mesa 7i77.

Is any of this still valid?

gnipsel.com/linuxcnc/tuning/torque.html

JT

Its still valid (just more conservative)

Just Bumping this up for any feedback on next step to eliminate the osculation following the command in the video linlk.

Type_Zero_Design wrote: Todd,

I posted a link to a video of my hall scope with the error in the post with my current settings a post back, but I know it's kind of an unconventional way to post a video so I've included it here as well( It won't let me upload directly)

photos.app.goo.gl/eiimAkZXWb9CGVqG6

Hopefully that's viewable for others, I'm not 100% sure it's from my Google drive.

That's pretty slow to be P-term oscillation. Do you have any I term?

My X and Y are both:
P:1500
I:1000
D:4
BIAS:0
FF0:0
FF1:0
FF2: 0.1
Deadband:.0001

Z:
P:50
I:1
0.7
BIAS:0
FF0:0
FF1:0
FF2: 0.02
Deadband:.0001

Still got work to do.. but performing way better now. Still has issues when command a move less than 1", so I will keep working on it, thanks for everyone's help!

I=1000 with P=1500 looks wrong. I is typically a very small fraction of P.

I think you are seeing an I-term oscillation there.