Servo Tuning FF
25 Oct 2016 09:31 #82030
by mariusl
Regards
Marius
www.bluearccnc.com
Replied by mariusl on topic Servo Tuning PID and FFn
Hi All
I have a problem with a machine using servos. It is a 4 axis machine with the 4th axis being rotary. The linear servos are tuned and working very well but the rotary axis is not behaving well. It has a severe oscillation and I cannot seem to get the PID trimmed to stabilize the servo.
The 4th axis used to be a stepper and that worked well but we changed the stepper for a servo to get more speed through a reduction planetary gearbox.
I attached the HAl and INI files. Maybe I missed the obvious again
The setup is like this: I use a 5i23 with two H Bridges from Mesa. Remaining ports has a 7i33 and a 7i37 to drive the 4th axis servo and do some I/O.
I have a problem with a machine using servos. It is a 4 axis machine with the 4th axis being rotary. The linear servos are tuned and working very well but the rotary axis is not behaving well. It has a severe oscillation and I cannot seem to get the PID trimmed to stabilize the servo.
The 4th axis used to be a stepper and that worked well but we changed the stepper for a servo to get more speed through a reduction planetary gearbox.
I attached the HAl and INI files. Maybe I missed the obvious again
The setup is like this: I use a 5i23 with two H Bridges from Mesa. Remaining ports has a 7i33 and a 7i37 to drive the 4th axis servo and do some I/O.
Regards
Marius
www.bluearccnc.com
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