Information only
It is possible that the calculated control parameters do not bring about the desired characteristics.
Possible reasons:
Slack
Static friction
Position - dependent friction and load
Position -dependent rigidity and damping on spindle drivesdrive wheels
Mechanically coupled axes (Gantry axesMultiple drives and bogies driving one azimuth track.)
Temperature-dependent , weather, wind changes
Wear and tear
Aging
Process-related changes (pressure forces that are not yet in effect when tuning)
Load conditions
Non-linear kinematics
...