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Home Forum Configuring LinuxCNC Advanced Configuration Servo Tuning PID and FFn

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TOPIC: Servo Tuning PID and FFn

Re:Servo Tuning PID and FFn 13 Июл 2012 06:58 #21879

  • LAIR82
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I posted my hal and ini.


Thanks

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Re:Servo Tuning PID and FFn 13 Июл 2012 06:59 #21880

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Heres my ini This attachment is hidden for guests. Please log in or register to see it.
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Re:Servo Tuning PID and FFn 13 Июл 2012 07:27 #21881

  • andypugh
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I haven't spotted anything wrong in the HAL files.
I would be tempted to look at the pwmgen value pins in Halmeter (or the watch tab of Halconfig) to see if the signal is getting there.
Also have a look at the thread periods to make sure that the threads are running.
If the pwmgen values are non-zero and the enables are set, then it must be a problem outside HAL, I think.

I would suspect the /ENA pins, except that you have one working channel.
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Re:Servo Tuning PID and FFn 13 Июл 2012 07:32 #21882

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I can see the value going up and down on the +/- 10v on the pwmgen.02.value pin in the "show hal config" watch screen.

Im not sure what you mean though by thread periods?


Rick
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Re:Servo Tuning PID and FFn 13 Июл 2012 07:45 #21883

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LAIR82 wrote:
I can see the value going up and down on the +/- 10v on the pwmgen.02.value pin in the "show hal config" watch screen.

And you definitely have the hardware hooked up to analogue outputs 2 and 4 ?
Im not sure what you mean though by thread periods?
Halconfig also lets you see the execution time of the realtime modules and the thread periods. A number that doesn't change can indicate a crashed function.

Resolver support in LinuxCNC is fairly new. It might be worth loading the HAL with num_resolvers=0 to eliminate the possibility of a resolver driver bug. Just be aware that this means no feedback...
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Re:Servo Tuning PID and FFn 13 Июл 2012 08:01 #21885

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Right now I actually have my meter hooked to the aout2 and gnd2 terminals on the 7I49 with my meter hanging next my screen and keyboard, so I can see exactly whats going on.
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