This work focuses on output feedback control of a class of multi-input multi-output nonlinear systems with timevarying uncertain variables and input constraints. A robust dynamic output feedback controller is constructed through combination of a stabilizing bounded robust multivariable state feedback controller with high-gain observers and saturation filters. The state feedback component is des...

A new multivariable controller for cement milling circuits is presented, which is based on a nonlinear model of the circuit and on a nonlinear predictive control strategy. Comparisons with previous LQ control strategies show improved performances with respect to an important source of perturbations of the circuit: a change of hardness of the raw material.

So far, the optimization methods under consideration were presented for the continuous time case. This lecture describes a technique which allows one to apply the continuous time algorithms of H2 optimization, H-Infinity optimization, and Hankel optimal model reduction to discrete time systems. The technique is based on applying the familiar “Tustin” (or “bilinear”) CT to DT transformation. Whi...

••• •• y.c. ZHU , A.C.P.M. BACKX· and P. EYKHOFF IPooS Group, Datex Industry Tinnegieterstraat 12, NL-5232 BM 's-Hertogenbosch The Netherlands tel. 31-73-412225, fax: 31-73-426055 Dept. EE, Eindhoven University of Technology P.O. Box 513, NL-5600 MB Eindhoven The Netherlands Tel. 31-40-473300

This paper concerns general MlMO nonlinear processes, whose dynamic behavior is described by a standard state-space model of arbitrary order, including measurable disturbances. The concept of relative order of an output with respect to an input, extended to include disturbance as well as manipulated inputs, is generalized in a MlMO context and it is used to obtain a characterization of the dyna...

Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in ...

This paper is concerned with the design and the analysis of some nonlinear control strategies for a lactic acid production in the context of a continuously stirred tank reactor for which dynamical kinetics are strongly nonlinear and not exactly known. Since in a lactic acid fermentation process the main cost of raw material comes from the substrate and nutrient requirements, some multivariable ...

– The paper presents an effective procedure for control design of multi input – multi output nonlinear processes. The procedure is based on an approximation of a nonlinear model of the process by a continuoustime external linear model in the form of the left polynomial matrix fraction. The parameters of the continuoustime external linear model are recursively estimated either by a direct method...