System Linearization and PID tuning

I am working on the heating chamber, where heating/cooling is regulated by closed-loop control (PID). Heating/Cooling polarity is set/reset depending on the difference between temperature reached and desired temperature.

Power to the Heating/Cooling module and Heating/Cooling Polarity are digital outputs.

I want to linearize the system in order to find the best P;I;D gains. Any suggestions how I can linearize the system?

Answer 1

[Cris LaPierre]

You could use the PID Tuner app. When it opens, it will first linearize your model. See here.