The presence of disturbances in practical control engineering applications is unavoidable. At the same time, they drive the closed-loop system's response away from the desired behavior. For this reason, the attenuation of disturbance effects is a primary goal of the control loop. Fractional-order controllers have now been researched intensively in terms of improving the closed-loop results and robustness of the control system, compared to the standard integer-order controllers. In this study, a novel tuning method for fractional-order controllers is developed. The tuning is based on improving the disturbance attenuation of periodic disturbances with an estimated frequency. For this, the reference-to-disturbance ratio is used as a quantitative measure of the control system's ability to reject disturbances. Numerical examples are included to justify the approach, quantify the advantages and demonstrate the robustness. The simulation results provide for a validation of the proposed tuning method.


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    Title :

    Fractional-order PI controller design based on reference-to-disturbance ratio



    Publication date :

    2022-01-01


    Remarks:

    FRACTAL AND FRACTIONAL ; ISSN: 2504-3110



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629



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