Need some advice and opinions over a problem that I faced in my CNC cutting application.
I have a XY table (both linear motors) and of strokes 1500mm.
Both linear encoders are 1um.
I tuned both axis over 9 locations. From location nearer to 0,0 (home position) to the near end strokes and the following error I get range from 30 counts to 1000 counts.
Where the worst is at the near end location.
How do you guys deal with this kind of situation where you can have only 1 set of PID parameters?
What could have been wrong? Mechanical alighment, encoder alignment?
Need some advice from you guys.