ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Adaptive nonlinear control of a continuous stirred tank reactor

Petr Dostál, Monika Bakošová, Jiří Vojtěšek, and Vladimír Bobál

Faculty of Applied Informatics, Tomas Bata University in Zlin, nam. T. G. Masaryka 5555, CZ-760 01 Zlín, Czech Republic

E-mail: monika.bakosova@stuba.sk

Abstract: The paper deals with continuous-time nonlinear adaptive control of a continuous stirred tank reactor (CSTR). Control strategy is based on the application of a controller consisting of a linear and a nonlinear part. The static nonlinear part is derived as an inversion and exponential approximation of measured or simulated input-output data. Design of the dynamic linear part is based on an approximation of nonlinear elements in the control loop by a continuous-time external linear model with directly estimated parameters. In the control design procedure, polynomial approach with the pole assignment method was used. The nonlinear adaptive control was tested by simulations on a nonlinear model of a CSTR with a consecutive exothermic reaction.

Keywords: chemical reactor – nonlinear control – adaptive control – parameter estimation – polynomial method

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-011-0057-7

Chemical Papers 65 (5) 636–643 (2011)