Hello, we have this project where we have to find the best controller tunings for the cascaded steam drum on Loop Pro, so we had to do the whole step testing first then we got the transfer functions and tuned the controllers on simulink.
On simulink what worked best was PI controllers on the inner and outer loops, when we tried PI for inner loop and P for outer loop, the level kept decreasing and did not reach the setpoint. But on Loop Pro the P controller worked better than the PI for the outer level loop? Cause the level decreased smoothly to reach the setpoint while with PI oscillated a bit.
We can't figure out why we have this difference in responses.
I'd be really glad if someone can help me on this.
u/AccurateExternal2547 — 15 days ago