"If the power goes OFF, we would still want cooling water to flow across the heat exchanger for safe operation. Hence, we use AIR-TO-CLOSE (FAIL OPEN) CONTROL VALVE." 4:25 Beautifully demonstrated.
i came across a question that stated that the level of the water has to be controlled using direct acting in the outflow of the tank. i have to explain my choice of direct or reverse. is the direct correct and why? thanks
It is coorrect because as the measure variable y(m) increases, the controller signal (Co) that is the flowrate of output of the tank must be increased as well in order to avoid over accumulation.
"If the power goes OFF, we would still want cooling water to flow across the heat exchanger for safe operation. Hence, we use AIR-TO-CLOSE (FAIL OPEN) CONTROL VALVE." 4:25 Beautifully demonstrated.
You make more sense than my instructor. Thank you
i came across a question that stated that the level of the water has to be controlled using direct acting in the outflow of the tank. i have to explain my choice of direct or reverse. is the direct correct and why?
thanks
It is coorrect because as the measure variable y(m) increases, the controller signal (Co) that is the flowrate of output of the tank must be increased as well in order to avoid over accumulation.
Does the transfer function changes if the controller is reverse acting or it will be the same??
how did you decide it failed open?
sir could you suggest a book for more information like what about cascade
I got to understand Exactly what I was looking for!
Very nice sign logic ...Thank you
This is very good
Thank you very much.
perfect
Sir please please say what will be acting for 2 controllers in cascade system...... Reply soon...
Using sign method
Corror brye