Auto Tuning PID methods

[veioloko]

Hello!
Does anybody knows which method is the better?
closed loop where we adjust the gain to do some oscilations
or open loop where we have only one curve?

 

[deepu_ttc]

Re: Auto Tuning PID

zn method is the method you can find pid co-efficients easily
--pradeep--

 

[veioloko]

Re: Auto Tuning PID

But ZN has both methods....oscilatory and step response

 

[deepu_ttc]

Re: Auto Tuning PID

go for oscilator i think its simple to find the co efficients

 

[un-2000]

Re: Auto Tuning PID

used the formulas for ziegler nichols BPL or ultimate gain method