Pseudo-PID Controller: Design, Tuning and Applications

In this paper, a pseudo PID (PPID) controller, including only one gain to be tuned, is proposed. The idea is to connect the I+PD control design with the Fertik and Ziegler-Nichols tuning rules in order to obtain not only a simple and efficient control algorithm but also to decrease the operator intervention time with respect to the calibration task and to obtain desired closed-loop dynamic. Three approaches for stable automatic tuning via, self-tuning, internal model control and small gain theorem, are investigated for adjusting the tuning parameter of the controller. Effectiveness and performance aspects of the proposed PPID controller are assessed in numerical and experimental plants.