Horrible resonance at specific speed

After it’s all set up with AdXL & input shaped, the ghosting disappears allowing high speed printing. But why do I get a horrible harmonic resonance at specific speed 98mm/s observed here. I would have thought that horrible noise would be the strongest signal to the input shaper? Graphs in my reply
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5 Replies
SimonSolar2C
SimonSolar2C2y ago
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ptegler
ptegler2y ago
this was talked about extensively.. THIS TOPIC NEEDS TO BE PINNED HERE! I just did this and YESY it made a BIG difference swap the wires around https://discordapp.com/channels/582187371529764864/844167067757182980/998324814509002944
SimonSolar2C
SimonSolar2C2y ago
Wow definitively needs to be pinned. Can't wait to try it when this print stops. I'm really surprised by this though - reversing the direction of power into the coils then reversing the direction of the power signals should be the same - unless there's a bug somewhere. I have the same issue on my Voron at 60mm/s
ptegler
ptegler2y ago
its the 2 coil polarities in relation to each other
rival-black
rival-black2y ago
is it valid also for z stepper motor?
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