Multiple PID

[federicocilla71@gmail.com]

Goodmorning everyone.
I have a problem I can not make more PID function simultaneously.
Can someone help me. Thank you

[admin]

Like this:

Code:

if not p1 then
  p1 = PID:init({
    current = '1/1/1',
    setpoint = '1/1/2',
    output = '1/1/3'
  })

  p2 = PID:init({
    current = '2/1/1',
    setpoint = '2/1/2',
    output = '2/1/3'
  })
end

p1:run()
p2:run()

[Erwin van der Zwart]

Hi,

Try this (see attachments)

BR,

Erwin

[federicocilla71@gmail.com]

good morning, thanks for the kind risposta.ma I can not upload the files you sent me. Can you help me.

[Erwin van der Zwart]

Hi,

The files are not export/import format but manualy created.

Just open them with a text editor (notepad++ or wordpad or something) and create a user lib called 'pid' and a resident script and past the content manualy to them.

BR,

Erwin

[federicocilla71@gmail.com]

thank you so much

[federicocilla71@gmail.com]

still one last question. To slow down a bit the speed of PID how they work the following values? :
     kp = grp.getvalue ('3/3/105'),
     ki = grp.getvalue ('3/3/106'),
     kd = grp.getvalue ('3/3/107'),
Thanks again for your valuable contribution.

[Erwin van der Zwart]

Hi,

This is project / system configuration related, i would start with 0.3 for all and from there fine tune between 0 to 1 if you need to reduce overshoot or need more agresive loops.

BR,

Erwin