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Introduction to LFR Gain-Scheduling Control at the Intake Manifold

Practical Control is often concerned with the nonlinear properties of given plants. Usually a nonlinear plant is approximated by linearized models. In the majority of cases, these linear models can describe the system dynamics of the nonlinear plant satisfactorily near their operating points, but it may happen that the system dynamics are changing significantly between these operating points. Then a common procedure in industrial application is to design several linear controllers for different operating points and to switch or interpolate between them depending on the operating point. This is referred to as Gain-Scheduling Control. LFR Gain-Scheduling Control itself is an extension of the robust $H_\infty$ Loop Shaping design technique for LPV (Linear Parameter Varying) systems, where LFR stands for the Linear Fractional Representation of a given LPV system. The LFR Gain-Scheduling design technique will be introduced during the presentation and applied to the control of the charging-air pressure in the intake manifold and thus the relative load of a gasoline motor.

Type of Seminar:
Public Seminar
Thomas Besselmann
Hamburg University of Technology (TUHH), Germany
Nov 18, 2005   15:00

ETH Zentrum, Physikstr. 3, Building ETL, Room K 25
Contact Person:

Prof. M.Morari
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Biographical Sketch:
Thomas Besselmann is student of Mechatronics at the Hamburg University of Technology (TUHH). Beforehand he studied General Engineering Science. After the 'Vordiplom' (intermediate exam) he became holder of the Rheinstahl scholarship of the Thyssen-Krupp AG. He finished General Engineering Science with concentration on Mechatronics in 2003 and graduated to a Bachelor of Science. At the moment, he is working on his diploma thesis.