Fractional-Order PID Controller: A Performance Evaluation for Time Delay Systems

In this study, we investigate factors that may have contributed to recent findings on the advantages of fractional proportional integral derivative (FO-PID) controllers over conventional PID and the potential for their use in applications in the process industry. Our objective was to demonstrate that FO-PID controllers offer better adjustability and efficiency in the feedback system. Consequently, it can be used to guarantee rigorous specifications on stability, robustness, performance for set point tracking, and load disturbance rejection, as well as to improve characteristics of noise reduction present in the transmitter output compared to those achievable with the classical PID controller using performance indices (IAE, ISE, TVu).