Simple FOPI Tuning Method for Real-Order Time Delay Systems

Abstract

Fractional-order controllers (FOC) can be more adequate to control systems with complex dynamics than integer-order controllers; however, how to obtain FOC is still being explored vigorously. This paper deals with a tuning approach for FOC with primary requirements of simplicity in technique and robustness. A simple analytical method to tune fractional-order proportional-integral (FOPI) controller for known system transfer functions is proposed. Study shows the simplicity and efficiency of the presented design method over some previously published approaches.