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If (unit > 0 .and. Call(unit) .and. Call6(unit)) Then
If (unit > 0) Then If (Info(3,unit) <= 0) Then
baumstrunk Topic starter
13/11/2023 1:23 pm
Sorry, I have no idea why my post became all black...and why my previous post of the same title turned out empty.
baumstrunk Topic starter
13/11/2023 1:23 pm
See attached a screenshot of the stack when the crash occurred.
baumstrunk Topic starter
13/11/2023 1:31 pm
The reason why I was looking at the LOOP statement was that I'd like my iterative feedback controller (Type 22) to try out a control value and then wait for the system to converge for that value, before adjusting the control value - instead of adjusting the control value in response to the error changing due to the rest of the system trying to converge. I hope I'm making any sense. 🙂
Damian, if the LOOP command is not functioning in v18 it is a bug and not something intentional.
That said, Type22 has the concept of setting the number of allowed controller state changes to 0 for the case that you describe. In this mode, the controller will stick to its decision before the maximum number of allowable iterations so that the other components in the system can come to convergence without the controller causing problems.
You might also look at using Type23 (the PID controller). It has a mode in which it can make its control decision only after the other components in the system have converged. That control decision is then the starting point for the controller's state at the next timestep.
kind regards,
David
