Ringing is only present while printing slow.

dc42

@MaxGyver perhaps you are experiencing mid-band resonance?

You could try collecting data during a small part of the print using the ~~input shaping~~ closed loop plugin with the custom GCode option.

MaxGyver

@dc42 said in Ringing is only present while printing slow.:

@MaxGyver perhaps you are experiencing mid-band resonance?

You could try collecting data during a small part of the print using the input shaping plugin with the custom GCode option.

From what I have gathered, so far, most probably yes. Changing the motors on Y did bring a slight improvement as well as setting the holding current in closed loop mode to 100%.

I have the 3.4.1-b1 plugin installed, but other than the "custom" input shaper tab I did not find anywhere to put custom Gcode. I would like to run ad G2 circle and record the vibration at different speeds.

Cheers Max

dc42

@MaxGyver I'm sorry, I meant the closed loop plugin, not the input shaping plugin.

IndeX4D

@dc42
Any news here?
I have the same problem with a my Y-Axis. It has also 2 motors.

MaxGyver

@IndeX4D

I downgraded to RRF stable branch and upgraded again to unstable, after downgrading did not resolve my problem. I swapped the Y motors to cheap ones I got from omc-stepperonline. It fixed the vibration issue, but unfortunately, I don't know whether It was the Firmware upgrade or switching of motors.

I will investigate this issue further as soon as I have a little more time.

-Max

IndeX4D

@MaxGyver
thanks
I use also the stepper of stepper-online.
Can you tell me your timing and your motors or the PID tuning of the y axis motor?
Tuning is sadly still not available for double y-axis.
Richard

dc42

@IndeX4D said in Ringing is only present while printing slow.:

Tuning is sadly still not available for double y-axis.

The tuning move only moves the motor by a little over 4 full steps. Is that too much skew for your Y axis to handle? Alternatively, can you set the second motor to zero current while you tune the first one?

IndeX4D

@dc42
I think we got a little missunderstanding. I should describe it better....

´´Axis with > 1 drive will not show´´ so I can´t do a basic tuning in the plug-in.

dc42

@IndeX4D thanks for the clarification. If we enable axes having more than one motor in the closed loop plugin, and give you the ability to select which motor to tune, would that be of any use to you?

IndeX4D

@dc42
yes, that would be great.

After a few tests, it seemed to be better when Using different R I D parameters, so I´m positive that a good tuning solve this problem.
Other options may? - wrong Timing? What would you suggest?

Thanks Richard

dc42

@IndeX4D tuning one driver of a multi-driver axis is supported in the 3.5beta1 version of the plugin. We hope to release RRF 3.5beta1 later today or tomorrow.

IndeX4D

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IndeX4D

@dc42
Very nice. thanks
Please tell us when it's uploaded. I'm waiting for it since the very first hour of the 1hcl

IndeX4D

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