Hi all,
I have implemented PID control for keeping heater temperature constant. I used Z-N method for parameter tuning and it bring the process variable close to set point but still fluctuate around set point. I want the variation to be within 0.2 deg C but output varies within +/- 2 deg Centigrade.
Is there a way to achieve such acuurate output?
I am attaching the VI for you guys to analyse.
PS: I am using NI 9219 to measure current temperature and control output is given to heater via NI 9264.
