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How to couple the built-in PID controller with the induction heating?
Posted 08.01.2026, 17:30 GMT-5 1 Reply
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Hi All,
I am trying to add the built-in PID controller to my induction heating system. I chose a domain point probe and monitored this probe's temperature as my PID controller's input. Then, I got an output whose unit is "volt" as the input of the induction coil. However, no matter what the target temperature that I set, the model always cut off the output at the very first beginning no matter I set "big" or "small" time step.
I also checked with the convergence plot and found that it didn't seem to be converged over time. I also downloaded the COMSOL's official induction heating demo and tried to add the PID controller into it and replace the input of the coil with the output of the controller, but it failed too.
I really have no idea how to address it and really appreciate any suggestions you give to me.
Thanks.
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No one can say without actually looking at your model. (Or the demo model with the controller added).
