The paper presents a new multivariable control concept for falling film evaporators (FFEs). Our concept solves the major challenges encountered in modern FFE control: large transport delays, additional control of the output mass flow, coupling of controlled variables, and disturbances due to time-varying input dry matter content. The challenges are addressed together, for the first time, by the following control design. Based on a dynamic nonlinear input–output model, we consider a linearizing output transformation to enable application of classical linear control methods composed of feedforward design, disturbance rejection, and a decoupling network. Due to these features, we are able to design robust PID and PI controllers that substantially compensate plant-model mismatches. Connecting our concept to a digital twin of the plant yields good performance, which encourages future application of the design in the real-world process.


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    Titel :

    A new multivariable control concept for the falling film evaporator process


    Beteiligte:
    Hofmann, Julian (Autor:in) / Ponomarev, Anton (Autor:in) / Hagenmeyer, Veit (Autor:in) / Gröll, Lutz (Autor:in)

    Erscheinungsdatum :

    2021-09-13


    Anmerkungen:

    Journal of process control, 106, 72–83 ; ISSN: 0959-1524



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    004 / 629




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