build a controller

wernsen · July 5, 2013, 05:37

Hey guys,

I would like to build a controller which regulates a boundary condition. For this job I need a PI-Controller. To create the (p)ropotional part is no problem with reports and fieldfunctions. The (i)ntegral part however is quite confusing since I need some kind of variable which I can change its value.

v_new = v_old + something

Due to the fact that reports and fieldfunctions are read-only I stuck here. Actually I just need a read- and writable variable.

Any tips?

GM_XIII · July 5, 2013, 08:31

Cant you do it also with a field function? Does the field function admit something like:
Suppose F1 is the field function
$F1+ whatever

Good luck, i am also interested

wernsen · July 5, 2013, 09:27

nop unfortunately not. this was my first hope, but an error will be the result (self-referencing)

GM_XIII · July 5, 2013, 09:47

Quote:

Originally Posted by wernsen

nop unfortunately not. this was my first hope, but an error will be the result (self-referencing)

Have you considered using a macro then?

wernsen · July 8, 2013, 03:28

Quote:

Originally Posted by GM_XIII

Have you considered using a macro then?

yes but I thought / hoped that there will be an asier way

July 5, 2013, 05:37	build a controller	#1
wernsen Member Martin Join Date: Nov 2011 Posts: 35 Rep Power: 14	Hey guys, I would like to build a controller which regulates a boundary condition. For this job I need a PI-Controller. To create the (p)ropotional part is no problem with reports and fieldfunctions. The (i)ntegral part however is quite confusing since I need some kind of variable which I can change its value. v_new = v_old + something Due to the fact that reports and fieldfunctions are read-only I stuck here. Actually I just need a read- and writable variable. Any tips?

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July 5, 2013, 08:31		#2
GM_XIII Member David Join Date: Aug 2012 Posts: 48 Rep Power: 13	Cant you do it also with a field function? Does the field function admit something like: Suppose F1 is the field function $F1+ whatever Good luck, i am also interested

July 5, 2013, 09:27		#3
wernsen Member Martin Join Date: Nov 2011 Posts: 35 Rep Power: 14	nop unfortunately not. this was my first hope, but an error will be the result (self-referencing)