Rasmus H. Nystr?m، نويسنده , , Jari M. B?ling، نويسنده , , Jan M. Ramstedt، نويسنده , , Hannu T. Toivonen، نويسنده , , Kurt E. H?ggblom، نويسنده ,

1384428

Application of robust and multimodel control methods to an ill-conditioned distillation column

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A set of linear models of an ill-conditioned two-product distillation column is used for controller design. A number of controller design methods are studied, each with the aim of achieving sufficient robustness and performance by using the description of plant variations and uncertainties provided by the model set. The investigated methods comprise multimodel H2 optimal control, mixed H2/H∞ control with nominal H2 performance, mixed H2/H∞ control with robust H2 performance, mixed-sensitivity loop shaping using structured-singular-value synthesis, robust loop shaping according to Glover and McFarlane, multivariable IMC and optimally tuned decentralized PI control. The controllers obtained by the various design methods are tested by a series of setpoint change experiments on the pilot-scale distillation column. The experimental results are reported and the different control methods are evaluated and compared with respect to obtained performance. Design issues are briefly discussed.

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Robust multimodel techniques , Ill-conditioned plants , distillation control

Studia Iranica

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