A General Sliding Mode Controller for Nonlinear Chemical Processes

Author:

Camacho Oscar1,Rojas Rube´n1

Affiliation:

1. Postgrado en Automatizacio´n e Instrumentacio´n, Grupo en Nuevas Estrategias de Control Aplicadas (GINECA), Facultad de Ingenierı´a, Universidad de Los Andes, Me´rida 5101, Venezuela

Abstract

This paper summarizes an approach of Sliding Mode Control, which can be used for a width class of nonlinear chemical processes. The controller was synthesized from an empirical model of the process. The designed controller was developed for minimum phase systems and presents a fixed structure and can be tuned based on the characteristic parameters of the model. A proposed implementation scheme is shown. The designed controller was tested for minimum and nonminimum phase systems, as well as for integrating and MIMO systems in different experimental conditions (i.e., disturbances, noise, modeling errors). The designed controller had shown good performance for the different kind of systems and conditions. [S0022-0434(00)01504-5]

Publisher

ASME International

Subject

Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering

Reference15 articles.

1. Camacho, O. E., Rojas, R. D., and Garcı´a, W. M., 1999, “Variable Structure Control Applied to Chemical Processes with Inverse Response,” ISA Trans., 38, pp. 55–72.

2. Camacho, O. E., Smith C. A., and Chaco´n E., 1997, “Toward an Implementation of Sliding Mode Control to Chemical Processes,” Proceedings of ISIE’97, Guimaraes, Portugal, pp. 1101–1105.

3. Camacho, O. E., Garcı´a, W. M., and Rojas, R. D., 1998, “Sliding Mode Control: A Robust Approach to Integrating Systems with Deadtime,” Proceedings of IEEE-ICCDCS, Margarita, Venezuela, pp. 401–406.

4. Camacho, O. E., Rojas, R. D., and Garcı´a, W. M., 1999, “A Sliding Mode Control Scheme for Multivariable Chemical Processes,” Proceedings of IASTED-ISC’99, Santa Barbara, CA, pp. 91–95.

5. Camacho, O. E., and Smith, C. A., 2000, “Sliding Mode Control: An Approach to Regulate Nonlinear Chemical Processes,” ISA Trans., 39, pp. 205–218.

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