Spindle PID close loop goes to the maximum value
16 Nov 2018 16:55 - 16 Nov 2018 16:56 #120845
by gantarone
Spindle PID close loop goes to the maximum value was created by gantarone
Hi ,
I have a mesa 7i76e and a 7i85 ,
I'm trying to do a Close Loop Spindle but I think I have a configuration problem in my HAL
The encoder work well with exact value of rpm (on GUI)
when I try to set any speed value my Spindle goes to its maximum speed
Ex. S1000 the spindle goes to 7000 rpm
I tried to change the pid values but the result does not change ....
attached my ini and hal files
Any help is appreciated!!!!
I have a mesa 7i76e and a 7i85 ,
I'm trying to do a Close Loop Spindle but I think I have a configuration problem in my HAL
The encoder work well with exact value of rpm (on GUI)
when I try to set any speed value my Spindle goes to its maximum speed
Ex. S1000 the spindle goes to 7000 rpm
I tried to change the pid values but the result does not change ....
attached my ini and hal files
Any help is appreciated!!!!
Last edit: 16 Nov 2018 16:56 by gantarone.
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16 Nov 2018 17:32 - 16 Nov 2018 17:33 #120848
by PCW
Replied by PCW on topic Spindle PID close loop goes to the maximum value
The spindle PID feedback term is linked to the signal spindle-vel-fb-rpm:
net spindle-vel-fb-rpm => pid.s.feedback
but spindle-vel-fb-rpm is not driven (so will always be 0)
You probably want the PID feedback to come from the signal spindle-fb-rpm-abs:
net spindle-fb-rpm-abs abs.spindle.out => lowpass.spindle.in
net spindle-vel-fb-rpm => pid.s.feedback
but spindle-vel-fb-rpm is not driven (so will always be 0)
You probably want the PID feedback to come from the signal spindle-fb-rpm-abs:
net spindle-fb-rpm-abs abs.spindle.out => lowpass.spindle.in
Last edit: 16 Nov 2018 17:33 by PCW.
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16 Nov 2018 17:57 #120851
by alan_3301
Replied by alan_3301 on topic Spindle PID close loop goes to the maximum value
Is this might be another pncconf bug? I had the same issue. It set net spindle-vel-fb-rpm => pid.s.feedback instead of net spindle-vel-fb-rpm-abs => pid.s.feedback
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16 Nov 2018 18:15 #120852
by PCW
Replied by PCW on topic Spindle PID close loop goes to the maximum value
Yes I think this is another pncconf bug
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16 Nov 2018 19:22 #120859
by gantarone
Replied by gantarone on topic Spindle PID close loop goes to the maximum value
Thanks for quick replay.....
I'll test it soon!!!
I'll test it soon!!!
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19 Nov 2018 10:57 #120984
by gantarone
Replied by gantarone on topic Spindle PID close loop goes to the maximum value
It woks!!!!
Thanks
just another question ... can I see the PID "Calibration" Spindle like as axes (JOINT_0, JOINT_1, JOINT_N) to modify on fly PID?
Thanks
just another question ... can I see the PID "Calibration" Spindle like as axes (JOINT_0, JOINT_1, JOINT_N) to modify on fly PID?
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19 Nov 2018 12:45 #120986
by alan_3301
Replied by alan_3301 on topic Spindle PID close loop goes to the maximum value
I don't think there is any easy way, but you can make changes from a terminal window with halrun.
halrun setp pid.s.Pgain 100
When making changes I liked to first run the command with the existing setting, so that if the spindle went crazy, I can just press up arrow twice then enter, to reset the original setting. If that makes sense.
halrun setp pid.s.Pgain 100
When making changes I liked to first run the command with the existing setting, so that if the spindle went crazy, I can just press up arrow twice then enter, to reset the original setting. If that makes sense.
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19 Nov 2018 13:06 #120987
by gantarone
Replied by gantarone on topic Spindle PID close loop goes to the maximum value
Thanks Alan!!!!
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