Tuning three-term controllers for integrating and stable or unstable first order plus dead-time processes

A new direct synthesis method for tuning the Pseudo-Derivative Feedback controller for integrating as well as stable or unstable first order processes with time delay is presented. The proposed control structure and tuning method ensure smooth closed-loop response to set-point changes, fast regulatory control and sufficient robustness against parametric uncertainty. Simulation results show that the proposed method is as efficient as the best of the most recent PID controller tuning methods that are known in the extant literature, while its simplicity in deriving the controller settings is a plus point over existing PID controller tuning methods.