vibration on motors at low speed

[Tinchus]

Hi. This is a duet3, firmware 3.5.2, SBC
In this printer I have all nema23 motors with ballscrews. There is a huge difference in vibration when motors run at low speeds, they vibrate a lot, it is not a mechanical issue, I have double checked that very deeply. I can feel by hand how the motors start to vibrate at speeds in the range 19 mm/s to 10 mm/s, at higher speeds they stop doing that.
Im using a 1/16 stepping on the config.
Documentation about the drivers is really complex, could someone give me a hint on what clould I try from the config point of view to do some steps in order to see if I can improve this behaviour? this motors are suposed to be really good quality (Moons brand)
Thanks in advance for the help you can give me

[dc42]

@Tinchus it's likely that you are encountering mid band resonance. You may also be encountering nonlinear microstepping and we may provide a firmware feature to alleviate that in a future release.

I assume that you already have microstep interpolation enabled.

[Tinchus]

@dc42 thanks a lot for the comments. I will look for information about this. So you think at this moment there is not much I can do about it??
Yes, I have interpolation enabled and motors are isen 1/16 microstepping

[droftarts]

@Tinchus Have a look at https://www.geckodrive.com/support/mid-band-instability/

Ian

[Tinchus]

@droftarts jajajaj I have just read that article jajajaja thanks