Auto-tuning of PID parameters with programmable logic controller

In this study, PID control algorithm for a level control system is designed and applied to a programmable logic controller in order to meet the requirements of engineering students' hands on training on PID control of processes. The auto-tuning mode of operation based on PID analog measurements in a closed-loop control system is preferred to present how stable, less time consuming solution it is. Trial and error method is also used for determining PID parameters in order to compare the results with the auto-tuning method.