EMC and Auto pid config

[visky]

Hello!

Anyone tried at_pid tunning for closed loop servos?

What should i change in default hal file and ini file? delete PID parametres?

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[mikegg]

To my knowledge, there is no automatic PID tuning in EMC2. It must be done manually.

[samco]

There is an at_pid module... The few times I have tried it - it doesn't give great values.. Plus it only does pid (no ff1-ff3)


It would be really nice for someone to come up with a nice tuning componant.

sam

[visky]

samco,

Have you got those files ?
I would like to play with and see what results will i get

[samco]

all you do is change the hal file so it uses the at_pid instead of the pid hal module. Then go into the halcmd and wiggle the bits

http://linuxcnc.org/docs/2.3/html/ma.../at_pid.9.html

you will have to play with it - it has been a while. I think You just need to play with
pid.N.tune-effort (I think I had to raise this to get anything out)
pid.N.tune-type (I think it only works well with 0 unless you have velocity mode amps)
pid.N.tune-cycles
pid.N.tune-mode
pid.N.tune-start

sam

[sarathgoldeneye]

Hai all,

seems u want a better PID tuning system. Check out the link below. This is for tuning PID controller, in single click. give the parameters of ur plant and click design(automatic or manual).

AutoPID - Technology Futurae

Thank You

Sarath