LinuxCNC S-Curve Accelerations

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10 Jan 2026 15:07 - 10 Jan 2026 15:13 #341236 by ruediger123
Replied by ruediger123 on topic LinuxCNC S-Curve Accelerations
@grandixximo

when I initiate the jerk, you should stick to that.
Does interpolation refer to the movement of the axes or the speed of the calculation?
If the movement of the axes is meant, I can specify a higher jerk.

If I have a stiff machine, I can apply a high jerk and the axles will move smoothly (no overshooting or anything like that). With a soft machine, I have to set a small jerk, otherwise the axles will move erratically (overshooting or anything like that).
Acceleration also plays a role, of course.

If the jerk is maintained, I can adjust the axles properly.
For example, a small jerk and high acceleration.
If the jerk is not maintained, I have to specify a lower acceleration so that the axles run smoothly.
Last edit: 10 Jan 2026 15:13 by ruediger123.

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10 Jan 2026 15:17 #341238 by grandixximo
Replied by grandixximo on topic LinuxCNC S-Curve Accelerations
Both need to be taken into consideration, calculation speed and joints movements, will try to cap to max
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10 Jan 2026 16:18 #341240 by PCW
Replied by PCW on topic LinuxCNC S-Curve Accelerations
I still get acceleration violations but the magnitude seems less


 

ini values:

 

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File Name: ini_2026-01-10.txt
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10 Jan 2026 18:09 #341243 by endian
Replied by endian on topic LinuxCNC S-Curve Accelerations
I can not upload the file because it exceeds 1.6mb ... I need to upload it over external source www.uschovna.cz/sk/zasilka/UA4I4N3SK2XGF2W6-TNV/

I checked the @ruediger123 codes and there are another spikes in the ramps... 
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