L_TT1P_FlexCAM: Interpolated cam generates unsteady torque feedforward control (corrected from V3.14.0)

Corrected from:
L_TT1P_TechnologyModules_LM (V3.14.0.21)

Response of the new version:

Speed and acceleration are precontrolled when processing cams composed of interpolation points. In this way there will be no sudden changes in the torque feedforward control characteristic.

What happens?

The drive generates vibrations due to peaks in the calculated torque feedforward control value.

When does this behaviour occur?

An interpolated cam with grid points is used together with the FlexCAM technology module.

Which products are affected?

L_TT1P_FlexCAM technology module from the L_TT1P_TechnologyModules_LM library (V3.12.0.9 and higher)

Short-term measures:

Set the interpolation between the points in the cam to 5th degree polynomial. As an alternative, you can use the MC_CamIn FB for the stair-step shaped cam.

Evaluation/recommendations:

The calculated positions of the slave drive result in a stepwise speed (interpolation points). This leads to an acceleration with peaks at the corresponding steps.

URL for linking this AKB article: https://www.lenze.com/en-de/go/akb/201600105/1/

Metadaten

Taxonomy: TM Flex Cam , TM Basic Motion , TM Cross Cutter , TM Electrical Shaft Position , TM Electrical Shaft Velocity , TM Flying Saw , TM Magic Track , TM Pick and Place , TM Register Control , TM Smart Track , TM StackerCrane , TM Table Positioning , TM Temperature Control , TM Track Pick and Place , TM Traverser , TM Virtual Master , TM Winder Dancer-controlled , TM Winder Tension-controlled , FAST Motion Lib L_TT1P_LM
AKB-ID: 201600105
Last update: 2023/09/09
Category: Versions-Informationen

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