3 replies to this topic

[Dcoz]

Hello Dear Chemical Engineering community,

 

We are currently designing the simulink control for a distillation column, and attached below is what we have done so far.

 

We implemented feedback control. The problems is that we generated 4 PID controllers (two for the reflux and two for the reboiler) yet are required to only use 2 PIDs, so my question is how do we 'fuse' two PID controllers into one.

 

Any other comments or suggestions are highly appreciated.

 

Thank you

 

 

Attached Files

•  WhatsApp Image 2021-04-26 at 6.04.43 PM.jpeg   46.7KB   1 downloads

[Pilesar]

I am not expert at what you are doing (and am not sure I even understand what you are doing), but consider using a weighted sum of the changes calculated by both controllers.

[breizh]

Hi,

Not sure I understand your query . I added documents about Distillation towers and control . You may submit a simple PFD/PID for us to visualize your problem with sensors ,controllers and links between them .

My view

Breizh

[horatorres]

  Dcoz

 

It is not possible to understand what are you doing without a P&ID   or the control loop drawing

 

 

horacio