This paper deals with a sensitivity analysis of an LQ optimal multivariable controller for a fine coal injection vessel used in the blast furnace process. The multivariable controller from a previous work is briefly presented and the closed loop system is studied by means of a sensitivity analysis. Effects of disturbances and uncertainty on the closed loop system are studied based on analysis of the singular values of the sensitivity and the complementary sensitivity functions, the relative gain array and the minimized condition numbers. Finally, the sensitivity analysis is validated by the use of logged data from test operation at the coal injection plant at SSAB Tunnplat Lulea, Sweden
Original languageEnglish
TitleConference record of the 1999 IEEE Industry Applications Conference : fourth IAS annual meeting, 3 - 7 October 1999, Hyatt Regency, Phoenix, Arizona, USA
Number of pages7
Publication date1999
ISBN (print)0-7803-5589-X


ConferenceIEEE Industry Applications Conference
LandUnited States

Event (Conference etc)

IEEE Industry Applications Conference

Oct. 03 1999 - Oct. 07 1999

Phoenix, United States

Event (Conference etc): Conference