A multivariable robust controller for a pilot plant

Author

Ortega, M.G. ; Rubio, F.R.

Author_Institution

Escuela Super. de Ing., Univ. de Sevilla, Sevilla, Spain

fYear

2001

fDate

4-7 Sept. 2001

Firstpage

420

Lastpage

425

Abstract

In this paper, a pilot plant located at our laboratory is initially presented. The system consists of industrial components (a water tank, a resistor, pneumatic valves and a heat exchanger) and the main goal is to control some of its temperatures. Due to the high nonlinearity introduced by the heat exchanger, a model of the plant is obtained at an operating point and an analysis is made to obtain some properties of its controllability. Results of this analysis are used to synthesize a multivariable H_∞ controller to keep robust the plant against disturbances and small changes of the operating point. The performance of the controller is finally presented with experimental results.

Keywords

H^∞ control; control nonlinearities; controllability; heat exchangers; multivariable control systems; performance index; pneumatic control equipment; process control; robust control; tanks (containers); temperature control; valves; controllability; controller performance; disturbance robustness; heat exchanger; industrial components; industrial process control; multivariable H_∞ controller synthesis; multivariable robust controller; nonlinearity; pilot plant; plant model; pneumatic valves; resistor; temperature control; water tank; Process control; Resistors; Sensitivity; Transfer functions; Valves; Water heating; Control Applications; Industrial Process; Multivariable Control; Process Control; Robust Control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (ECC), 2001 European

Conference_Location

Porto

Print_ISBN

978-3-9524173-6-2

Type

conf

Filename

7075943