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A new multivariable control concept for the falling film evaporator process

Hofmann, Julian 1; Ponomarev, Anton; Hagenmeyer, Veit 1; Gröll, Lutz 1
1 Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

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.

Postprint §
DOI: 10.5445/IR/1000137336
Veröffentlicht am 12.09.2022
DOI: 10.1016/j.jprocont.2021.08.015
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Automation und angewandte Informatik (IAI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 10.2021
Sprache Englisch
Identifikator ISSN: 0959-1524
KITopen-ID: 1000137336
HGF-Programm 37.12.01 (POF IV, LK 01) Digitalization & System Technology for Flexibility Solutions
Erschienen in Journal of process control
Verlag Elsevier
Band 106
Seiten 72–83
Vorab online veröffentlicht am 11.09.2021
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