2 replies to this topic

[CHEMSTRONG]

Dear All,

 

I want to know about tuning parameters of PID controllers. I generally assume P in PID for flow control as 0.1 secs  , D as 0.2 and ignore D in PID. for pressure control , P is 2 &  I is 2 secs. Is this correct for all controllers of flow and pressure?

 

Regards

[breizh]

Hi,

Consider to read the documents attached to support your work . I don't know from where you got these numbers,if you are not familiar with process control ask assistance to E&I engineer .
Hope this helps

Breizh

[Zauberberg]

A great resource on controller tuning is Bela Liptak's "Instrument Engineers' Handbook, VOL.2 - Process Control and Optimization", Section 2.35.

 

A single set of PID parameters simply cannot be applied for all controllers. Each system possesses different characteristics, hence it is impossible to have them treated equally.