I am a lab assistant from an undergraduate teaching laboratory and I have only been using LabVIEW for approximately 2 months. We are trying to implment a PID controller without any toolkit for a heat exchanger experiement to control the temperature by regulating the steam value. The temperature has to be kept constant once the desired temperature is obtained, and increase it automatically when it drops. My rationale in this case is: set steam value - obtain desired temperature - stop supplying steam - temperature drop - open steam valve automatically - obtain desired temperature . However, we have a problem with wiring the correct set point and the output. I am using a Control and Simulation Loop and a PID Advanced Autotuning subVI within. cDAQ-9174 is used.
I can screenshot part of the block diagram if needed. Thank you!
