Dynamic Acceleration Adjustment (M593)

An experimental feature for the Duet line of print controllers. If it is enabled, then acceleration and deceleration rates will be adjusted per-move to cancel out ringing at the specified frequency. Left: off, middle: 75Hz, right, 80Hz. The final ripples visible are because of bad pulleys.

If you want to find out your frequency, print this piece in vase mode (spiralize outer contour) at a fairly high speed/jerk/acceleration setting. I used 10000mm/s2 acceleration 30mm/s jerk and 100mm/s print speed. After printing measure the interval of the ripples and divide your print speed with it. In my case I measured 1.25mm at 100mm/s and ended up with 80Hz.Then use mcode M593 Fnnn to insert your frequency.

Read more about it here