Re: [TRNSYS-users] if contition

["Jeff Thornton" <thornton@tess-inc.com>]

<I am trying to imply an if condition in the simulation studio, but I
don't know How..
I want to compare 2 temperatures and if the DT is above a limit I want to
have a state 0 or else a state 1..>

EQUATIONS 1
RESULT=LT((T2-T1),VALUE)

Or you can add the ABS function if you need it:

EQUATIONS 1
RESULT=LT(ABS(T2-T1),VALUE)

But be forewarned - if you use this approach to generate a control signal
you will likely run into convergence problems at some point.  The Type 2
differential controller does exactly what you are looking for - and has
stability built in...

Jeff

Jeff Thornton
President - TESS, LLC

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