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Modeling And Robust Pi Control Of A Fluidized Bed Combustor For Sewage Sludge
Author(s) -
Jia Yingmin,
Lunze Jan,
Wolff Andreas
Publication year - 2002
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1111/j.1934-6093.2002.tb00089.x
Subject(s) - control theory (sociology) , multiplicative function , controller (irrigation) , combustor , robust control , stability (learning theory) , interval (graph theory) , pid controller , control system , computer science , mathematics , control (management) , control engineering , engineering , temperature control , combustion , mathematical analysis , chemistry , organic chemistry , electrical engineering , combinatorics , artificial intelligence , machine learning , agronomy , biology
Based on experimental data, a fluidized bed combustor is modeled as an interval system. Severe model uncertainty and large time delays lead to the main difficulties in solving the control problem. The design uses the stability test of closed‐loop systems as the main guideline for developing a robust PI controller. In particular, a new formula to compute the maximal magnitude of an edge rational function at a fixed frequency is derived, which provides a way to deal with time delay by transforming it into multiplicative uncertainty. Both the theoretical and the experimental results show that the designed PI controller can satisfy the desired performance requirements.