Adaptive feedback control for a pasteurization process

Emil Rasmussen, Massimiliano Errico*, Stefania Tronci

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The milk pasteurization process is nonlinear in nature, and for this reason, the application of linear control algorithms does not guarantee the obtainment of the required performance in every condition. The problem is here addressed by proposing an adaptive algorithm, which was obtained by starting from an observer-based control approach. The main result is the obtainment of a simple PI-like controller structure, where the control parameters depend on the state of the system and are adapted online. The proposed algorithm was designed and applied on a simulated process, where the temperature dependence of the milk’s physical properties was considered. The control strategy was tested by simulating different situations, particularly when time-varying disturbances entered the system. The use of the adaptive rule reduces the variance generally introduced by the PI or PID controller.
Original languageEnglish
Article number930
JournalProcesses
Volume8
Issue number8
Number of pages13
ISSN2227-9717
DOIs
Publication statusPublished - 2. Aug 2020

Keywords

  • Adaptive control
  • Milk
  • Modeling
  • Pasteurization

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