Fractional-Order PID Controller Based on Immune Feedback Mechanism for Time-Delay Systems

The control of processes with time delays is crucial in process industries such as petrochemical, hydraulic, and manufacturing. It a challenging task for automation engineers, it may affect both phase gain margins. In this case, robust system preferred. This article presents novel controller structure combining computational intelligence (CI) fractional-order control. A PID (FOPID) based on bio-inspired immune feedback mechanism (IFM) developed controlling described first-order plus time-delay systems (FOPTD). genetic algorithm (GA) used to optimize the parameters. Fractional-order has been give extra flexibilities an its self-adaptability. Numerical simulations are presented validate proposed strategy terms reference tracking disturbance rejection. Comparative simulation results integer-order also included demonstrate efficiency method.