Premium
Robust controller design for a heating system
Author(s) -
Wang W.,
Engell S.
Publication year - 1999
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/(sici)1099-1239(199910)9:12<883::aid-rnc439>3.0.co;2-q
Subject(s) - control theory (sociology) , nonlinear system , controller (irrigation) , control engineering , open loop controller , scaling , robust control , design methods , control system , computer science , engineering , control (management) , mathematics , closed loop , mechanical engineering , physics , geometry , electrical engineering , quantum mechanics , artificial intelligence , agronomy , biology
A new robust linear controller design procedure is applied to the design of a controller for the heating system of a pilot plant distillation column. The heating system exhibits nonlinear dynamics. For design purposes, it is represented by seven linear time‐invariant models obtained at different operating points. The robust control design procedure combines the loop‐shaping design procedure (LSDP) and the controller design method by frequency response approximation (FRA). A scaling procedure by which the condition number of the plant model is reduced is used to facilitate the design. The controller for the scaled system is then rescaled to control the original system. The order of the controller is reduced using again the FRA procedure. The results of the simulation of the nonlinear plant model show that the design was successful. Copyright © 1999 John Wiley & Sons, Ltd.