Closed loop (bowden) extruder
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Good evening,
Would it be possible to operate an extruder in closed loop mode?
For instance with:
- Duet3D magnetic encoder on the extruder's stepper (commutation)
- Duet3D magnetic filament monitor near the hotend (close the loop)
- Duet3D 1HCL
If this would be possible, it could improve:
- Estep calibration, material independent
- Retraction
- Backlash in the bowden tube
- VFA due to excentric hobs
- VFA due to speed variations caused by poorly meshed (dual) extruder gears
- Possibly pressure advance
- Non linear extrusion
- Extruder feed forward
Thanks in advance!
