Abstract
The proposed PID tuning method has similar approach to the recently published paper of Shamsuzzoha and Skogestad (2010). It is one step procedure to obtain the PI/PID setting which gives the better performance and robustness. The method requires one closed-loop step setpoint response experiment using a proportional only controller with gain K c0 . On the bases of simulations for a range of first-order with delay processes, simple correlations have been derived to give PI/PID controller settings. The controller gain (K c /K c0 ) is only a function of the overshoot observed in the setpoint experiment. The controller integral and derivative time (τ I and τ D ) is mainly a function of the time to reach the first peak (t p ). The proposed tuning method shows better performance than Shamsuzzoha and Skogestad [1] for broad range of processes.
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